http://am.ing.unipi.it/api.php?action=feedcontributions&feedformat=atom&user=PaoloMattioni 2026-04-30T04:58:23Z Contributi utente MediaWiki 1.31.0 http://am.ing.unipi.it/index.php?title=Additive_manufacturing_with_vat_polymerization_method_for_precision_polymer_micro_components_production&diff=340 2020-02-03T22:03:39Z

<p>PaoloMattioni: </p> <hr /> <div>:'''Authors and full affiliations:''' Ali Davoudinejada, Lucia C. Diaz-Perezb, Danilo Quagliotti, David Bue Pedersena, José A. Albajez-Garcíab, José A. Yagüe-Fabrab,Guido Tosello<br /> :'''Keywords:''' Micro precision manufacturing, Polymer components<br /> :'''Purpose:''' check the dimensional tolerances of the parts produced by additive manufacturing with microscope e polymerization <br /> :'''Design methodology/approach:''' investigation of dimensional and surface tolerance carried out using a focus variation microscope evaluating the contrast of the images with vat polymerization method.<br /> :'''Findings:''' experimentation is allowed to highlight the repeatability of the machine to create quite precise geometries. There are two cases, the cylindrical surfaces are more precise, the box ones are less precise<br /> :'''Practical implications:''' Crate precise surfaces in the order of microns<br /> :'''Originality/value:''' particular measurement technique for additive manufacturing <br /> :'''Full references:'''DAVOUDINEJAD, Ali, et al. Additive manufacturing with vat polymerization method for precision polymer micro components production. Procedia CIRP, 2018, 75: 98-102.<br /> :'''Link:''' https://www.sciencedirect.com/science/article/pii/S2212827118305651</div>

PaoloMattioni http://am.ing.unipi.it/index.php?title=Additive_manufacturing_with_vat_polymerization_method_for_precision_polymer_micro_components_production&diff=186 2020-01-08T17:52:01Z

<p>PaoloMattioni: </p> <hr /> <div>:'''Authors and full affiliations:''' Ali Davoudinejada, Lucia C. Diaz-Perezb, Danilo Quagliotti, David Bue Pedersena, José A. Albajez-Garcíab, José A. Yagüe-Fabrab,Guido Tosello<br /> :'''Keywords:''' Micro precision manufacturing, Polymer components<br /> :'''Purpose:''' check the dimensional tolerances of the parts produced by additive manufacturing with microscope e polymerization <br /> :'''Design methodology/approach:''' investigation of dimensional and surface tolerance carried out using a focus variation microscope evaluating the contrast of the images with vat polymerization method.<br /> :'''Findings:''' experimentation is allowed to highlight the repeatability of the machine to create quite precise geometries. There are two cases, the cylindrical surfaces are more precise, the box ones are less precise<br /> :'''Practical implications:''' Crate precise surfaces in the order of ten microns<br /> :'''Originality/value:''' particular measurement technique for additive manufacturing <br /> :'''Full references:'''DAVOUDINEJAD, Ali, et al. Additive manufacturing with vat polymerization method for precision polymer micro components production. Procedia CIRP, 2018, 75: 98-102.<br /> :'''Link:''' https://www.sciencedirect.com/science/article/pii/S2212827118305651</div>

PaoloMattioni http://am.ing.unipi.it/index.php?title=Additive_manufacturing_with_vat_polymerization_method_for_precision_polymer_micro_components_production&diff=185 2020-01-08T17:50:39Z

<p>PaoloMattioni: </p> <hr /> <div>:'''Authors and full affiliations:''' Ali Davoudinejada, Lucia C. Diaz-Perezb, Danilo Quagliotti, David Bue Pedersena, José A. Albajez-Garcíab, José A. Yagüe-Fabrab,Guido Tosello<br /> :'''Keywords:''' Micro precision manufacturing, Polymer components<br /> :'''Purpose:''' check the dimensional tolerances of the parts produced by additive manufacturing with microscope e polymerization <br /> :'''Design methodology/approach:''' investigation of dimensional and surface tolerance carried out using a focus variation microscope evaluating the contrast of the images with vat polymerization method.<br /> :'''Findings:''' experimentation is allowed to highlight the repeatability of the machine to create quite precise geometries. There are two cases, the cylindrical surfaces are more precise, the box ones are less precise<br /> :'''Limitations:''' to obtain small tolerances further processing is required<br /> :'''Practical implications:''' Crate precise surfaces in the order of ten microns<br /> :'''Originality/value:''' particular measurement technique for additive manufacturing <br /> :'''Full references:'''DAVOUDINEJAD, Ali, et al. Additive manufacturing with vat polymerization method for precision polymer micro components production. Procedia CIRP, 2018, 75: 98-102.<br /> :'''Link:''' https://www.sciencedirect.com/science/article/pii/S2212827118305651</div>

PaoloMattioni http://am.ing.unipi.it/index.php?title=Main_Page&diff=183 2020-01-08T17:40:38Z

<p>PaoloMattioni: /* Processes */</p> <hr /> <div>[https://docs.google.com/document/d/1Dpv8YCcSNuxh99Nw9ARPFtaRnw1ZEKm8RlWba0UMcWU/edit Istruzioni (in Italian, sorry)]<br /> <br /> =[[Materials]]=<br /> <br /> [[Additive Manufacturing Approaches for Hydroxyapatite‐Reinforced Composites]]<br /> <br /> [[Precision additive manufacturing of NiTi parts using micro direct metal deposition]]<br /> <br /> =[[Processes]]=<br /> *[[Fused Deposition Modeling]]<br /> *[[Wire Arc Additive Manifacturing]]<br /> *[[Material Jetting]]<br /> *[[Vat Polymerization]]<br /> *[[Selective Laser Melting]]<br /> *[[Hybrid Additive Manufacturing]]<br /> *[[Laser engineered net shaping]]<br /> <br /> =[[Parts]]=<br /> *[[Selective Laser Melting Parts]]<br /> *[[Development of a multifunctional panel for aerospace use through SLM additive manufacturing]]<br /> *[[3D printing for health &amp; wealth: Fabrication of custom-made medical devices through additive manufacturing.]]</div>

PaoloMattioni http://am.ing.unipi.it/index.php?title=Laser_Machining&diff=182 2020-01-08T17:40:26Z

<p>PaoloMattioni: Pagina svuotata</p> <hr /> <div></div>

PaoloMattioni http://am.ing.unipi.it/index.php?title=Additive_manufacturing_with_vat_polymerization_method_for_precision_polymer_micro_components_production&diff=172 2020-01-08T17:30:45Z

<p>PaoloMattioni: </p> <hr /> <div>:'''Authors and full affiliations:''' Ali Davoudinejada, Lucia C. Diaz-Perezb, Danilo Quagliotti, David Bue Pedersena, José A. Albajez-Garcíab, José A. Yagüe-Fabrab,Guido Tosello<br /> :'''Keywords:''' Micro precision manufacturing, Polymer components<br /> :'''Purpose:''' check the dimensional tolerances of the parts produced by additive manufacturing with microscope e polymerization <br /> :'''Design methodology/approach:''' investigation of dimensional and surface tolerance carried out using a focus variation microscope evaluating the contrast of the images with vat polymerization method.<br /> :'''Findings:''' experimentation is allowed to highlight the repeatability of the machine to create quite precise geometries. There are two cases, the cylindrical surfaces are more precise, the box ones are less precise<br /> :'''Limitations:''' to obtain small tolerances further processing is required<br /> :'''Practical implications:''' the additive manufacturing technique allows to crate precise surfaces in the order of ten microns<br /> :'''Originality/value:''' particular measurement technique for additive manufacturing <br /> :'''Full references:'''DAVOUDINEJAD, Ali, et al. Additive manufacturing with vat polymerization method for precision polymer micro components production. Procedia CIRP, 2018, 75: 98-102.<br /> :'''Link:''' https://www.sciencedirect.com/science/article/pii/S2212827118305651</div>

PaoloMattioni http://am.ing.unipi.it/index.php?title=Design_and_manufacturing_of_patient-specific_orthodontic_appliances_by_computer-aided_engineering_techniques&diff=168 2020-01-08T17:30:02Z

<p>PaoloMattioni: </p> <hr /> <div>:'''Authors and full affiliations:''' Sandro Barone, Paolo Neri, Alessandro Paoli, Armando Viviano Razionale<br /> :'''Keywords:''' Orthodontics, eruption guidance appliance, temporomandibular joint<br /> :'''Purpose:''' digitalization of several steps of the overall process: from the digital reconstruction of patients’ anatomies to the manufacturing of customized appliances. <br /> :'''Design/methodology/approach:''' A finite element model has been developed to evaluate the temporomandibular joint disks stress level caused by using symmetric eruption guidance appliances with different teeth misalignment conditions<br /> :'''Findings:''' The obtained results demonstrate that standard symmetric implants, which are not customized for the patient-specific anatomy, present critical issues when applied to generic asymmetric anatomie, instead the creation of tailor-made systems would create fewer problems and greater adaptability.<br /> :'''Limitations:''' The relative placement between maxilla and mandible has a significant influence on the overall patient health <br /> :'''Benefits:''' low-cost manufacturing process<br /> :'''Practical implications:''' Improved patient life and lower production costs<br /> :'''Originality/value:''' Better ergonomics of dental implants thanks to the creation of specific models for each patient created with 3D-CAD and AM. <br /> :'''Full references:''' BARONE, Sandro, et al. Design and manufacturing of patient-specific orthodontic appliances by computer-aided engineering techniques. Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine, 2018, 232.1: 54-66.<br /> :'''Link:''' https://journals.sagepub.com/doi/pdf/10.1177/0954411917742945</div>

PaoloMattioni http://am.ing.unipi.it/index.php?title=An_experimental_analysis_of_laser_machining_for_dental_implants&diff=167 2020-01-08T17:29:06Z

<p>PaoloMattioni: </p> <hr /> <div>:'''Authors and full affiliations:''' Michela Dalle Mura, Gino Dini, Michele Lanzetta, Andrea Rossi<br /> :'''Keywords:''' Laser Machining; Subtractive process; Dental implants; Ceramics; Polymers<br /> :'''Purpose:''' the aim of this work is to experimentally analyse the potential of the laser subtractive process as a new method for the creation of dental implants.<br /> :'''Design/methodology/approach:''' application of a subtractive process generating a high concentration of energy density, the heat focuses on an extremely small superficial portion. The material molecules, thanks to a vibrational motion, overheat till the cutting temperature.<br /> <br /> :'''Findings:''' the use of the laser technique allows for better and more precise results<br /> :'''Limitations:''' the groove shape obtained with the laser is less circular than that obtained with other methods<br /> :'''Practical implications:''' fast and precise process<br /> :'''Originality/value:''' this method offers a competitive advantage over conventional materials by means of the increasing efficiency of the applications for groove fabrication on biomaterials.<br /> <br /> :'''Graphical abstract:'''[[File:Milling_vs_Laser.jpg|thumb|Millin vs Laser]]<br /> <br /> :'''Full references:''' DALLE MURA, Michela, et al. An experimental analysis of laser machining for dental implants. Procedia CIRP, 2018, 67: 356-361.<br /> <br /> :'''Link:''' https://www.sciencedirect.com/science/article/pii/S2212827117311708</div>

PaoloMattioni http://am.ing.unipi.it/index.php?title=Additive_manufacturing_with_vat_polymerization_method_for_precision_polymer_micro_components_production&diff=160 2020-01-08T17:27:05Z

<p>PaoloMattioni: </p> <hr /> <div>:'''Authors and full affiliations:''' Ali Davoudinejada, Lucia C. Diaz-Perezb, Danilo Quagliotti, David Bue Pedersena, José A. Albajez-Garcíab, José A. Yagüe-Fabrab,Guido Tosello<br /> :'''Keywords:''' Micro precision manufacturing, Polymer components<br /> :'''Purpose:''' check the dimensional tolerances of the parts produced by additive manufacturing with microscope e polymerization <br /> :'''Design methodology/approach:''' investigation of dimensional and surface tolerance carried out using a focus variation microscope evaluating the contrast of the images with vat polymerization method.<br /> :'''Findings:''' experimentation is allowed to highlight the repeatability of the machine to create quite precise geometries. There are two cases, the cylindrical surfaces are more precise, the box ones are less precise<br /> :'''Limitations:''' to obtain small tolerances further processing is required<br /> :'''Practical implications:''' the additive manufacturing technique allows to crate precise surfaces in the order of ten microns<br /> :'''Originality/value:''' particular measurement technique for additive manufacturing <br /> :'''Main references:''' [1] Adam G, Zimmer D. Design for Additive Manufacturing—Element transitions and aggregated structures. CIRP Journal of Manufacturing Science and Technology 2014;7:20–28. [2] Thompson MK, et al. Design for Additive Manufacturing: Trends, opportunities, considerations and constraints. CIRP Annals - Manufacturing Technology 2016;65:737-760. [3] Moroni G, Petrò S, Polini W. Geometrical product specification and verification in additive manufacturing. CIRP Annals - Manufacturing Technology 2017;66:157-160. [4] Dantan JY et al. Geometrical variations management for additive manufactured product. CIRP Annals - Manufacturing Technology 2017;66:161-164. [5] 17296-2:2015 ISO-DIS, Additive Manufacturing – General Principles – Part 2 Overview of Process Categories and Feedstock. Standard, International Organization for Standardization. [6] Vaezi M, Seitz H, Yang S. A review on 3D micro-additive manufacturing technologies, Int. J. Adv. Manuf. Technol. 2013;67:5:1721-1754. [7] Gibson I, Rosen DW, Stucker B, Photopolymerization Processes, in Additive Manufacturing Technologies, Boston, MA: Springer US 2010:78–119. [8] Decker C, Photoinitiated crosslinking polymerisation, Prog. Polym. Sci. 1996;21:4:593-650. [9] 52900:2015 ISO/ASTM, Additive manufacturing -- General principles -- Terminology. Standard, International Organization for Standardization, p. 19. [10] ASTM International, F2792-12a - Standard Terminology for Additive Manufacturing Technologies 2013.<br /> :'''Link:''' https://www.sciencedirect.com/science/article/pii/S2212827118305651</div>

PaoloMattioni http://am.ing.unipi.it/index.php?title=Design_and_manufacturing_of_patient-specific_orthodontic_appliances_by_computer-aided_engineering_techniques&diff=158 2020-01-08T17:26:43Z

<p>PaoloMattioni: </p> <hr /> <div>:'''Authors and full affiliations:''' Sandro Barone, Paolo Neri, Alessandro Paoli, Armando Viviano Razionale<br /> :'''Keywords:''' Orthodontics, eruption guidance appliance, temporomandibular joint<br /> :'''Purpose:''' digitalization of several steps of the overall process: from the digital reconstruction of patients’ anatomies to the manufacturing of customized appliances. <br /> :'''Design/methodology/approach:''' A finite element model has been developed to evaluate the temporomandibular joint disks stress level caused by using symmetric eruption guidance appliances with different teeth misalignment conditions<br /> :'''Findings:''' The obtained results demonstrate that standard symmetric implants, which are not customized for the patient-specific anatomy, present critical issues when applied to generic asymmetric anatomie, instead the creation of tailor-made systems would create fewer problems and greater adaptability.<br /> :'''Limitations:''' The relative placement between maxilla and mandible has a significant influence on the overall patient health <br /> :'''Benefits:''' low-cost manufacturing process<br /> :'''Practical implications:''' Improved patient life and lower production costs<br /> :'''Originality/value:''' Better ergonomics of dental implants thanks to the creation of specific models for each patient created with 3D-CAD and AM. <br /> :'''Main references:''' 1. Ingawale S and Goswami T. Temporomandibular joint: disorders, treatments, and biomechanics. Ann Biomed Eng 2009; 37: 976–996. 3. Bergersen EO. The eruption guidance myofunctional appliance: case selection, timing, motivation, indications and contraindications in its use. Funct Orthod 1985; 2: 17–33. 4. Migliaccio S, Aprile V, Zicari S, et al. Eruption guidance appliance: a review. Eur J Paediatr Dent 2014; 15: 163–166. 5. Popescu D and Laptoiu D. Rapid prototyping for patient-specific surgical orthopaedics guides: a systematic literature review. Proc IMechE, Part H: J Engineering in Medicine 2016; 230: 495–515. 6. Al Mortadi N, Eggbeer D, Lewis J, et al. Design and fabrication of a sleep apnea device using computer-aided design/additive manufacture technologies. Proc IMechE, Part H: J Engineering in Medicine 2013; 227: 350–355. 7. Barone S, Paoli A, Razionale AV, et al. Computational design and engineering of polymeric orthodontic aligners. Int J Numer Method Biomed Eng. 2017; 33: 1–15. DOI: 10.1002/cnm.2839. 8. Kravitz ND, Kusnoto B, BeGole E, et al. How well does Invisalign work? A prospective clinical study evaluating the efficacy of tooth movement with Invisalign. Am J Orthod Dentofacial Orthop 2009; 135: 27–35. 9. Pileicikiene G, Surna A, Barauskas R, et al. Finite element analysis of stresses in the maxillary and mandibular dental arches and TMJ articular discs during clenching into maximum intercuspation, anterior and unilateral posterior occlusion. Stomatologija 2007; 9: 121–128. 10. Li GA, Sakamoto M and Chao EYS. A comparison of different methods in predicting static pressure <br /> <br /> :'''Link:''' https://journals.sagepub.com/doi/pdf/10.1177/0954411917742945</div>

PaoloMattioni http://am.ing.unipi.it/index.php?title=An_experimental_analysis_of_laser_machining_for_dental_implants&diff=156 2020-01-08T17:26:07Z

<p>PaoloMattioni: </p> <hr /> <div>:'''Authors and full affiliations:''' Michela Dalle Mura, Gino Dini, Michele Lanzetta, Andrea Rossi<br /> :'''Keywords:''' Laser Machining; Subtractive process; Dental implants; Ceramics; Polymers<br /> :'''Purpose:''' the aim of this work is to experimentally analyse the potential of the laser subtractive process as a new method for the creation of dental implants.<br /> :'''Design/methodology/approach:''' application of a subtractive process generating a high concentration of energy density, the heat focuses on an extremely small superficial portion. The material molecules, thanks to a vibrational motion, overheat till the cutting temperature.<br /> <br /> :'''Findings:''' the use of the laser technique allows for better and more precise results<br /> :'''Limitations:''' the groove shape obtained with the laser is less circular than that obtained with other methods<br /> :'''Practical implications:''' fast and precise process<br /> :'''Originality/value:''' this method offers a competitive advantage over conventional materials by means of the increasing efficiency of the applications for groove fabrication on biomaterials.<br /> <br /> :'''Graphical abstract:'''[[File:Milling_vs_Laser.jpg|thumb|Millin vs Laser]]<br /> <br /> :'''Main references:''' [1] Çelen S, Özden, H. Laser-induced novel patterns: As smart strain actuators for new-age dental implant surfaces. Applied Surface Science 2012; 263. p: 579-585.[2] Minamizato T. Slip-cast zirconia dental roots with tunnels drilled by laser process. The Journal of prosthetic dentistry 1990; 63.6. p: 677-684.[6] Papaspyridakos P, Lal K. Complete arch implant rehabilitation using subtractive rapid prototyping and porcelain fused to zirconia prosthesis: a clinical report. The Journal of prosthetic dentistry 2008; 100.3. p: 165-172.[9] Romoli L, Tantussi G, Dini G. Layered laser vaporization of PMMA manufacturing 3D mould cavities. CIRP Annals-Manufacturing Technology 2007;56.1. p: 209-212.[10] Romoli L, Tantussi G, Dini G. Experimental approach to the laser machining of PMMA substrates for the fabrication of microfluidic devices. Optics and Lasers in Engineering 2011; 49.3. p: 419-427.<br /> <br /> :'''Link:''' https://www.sciencedirect.com/science/article/pii/S2212827117311708</div>

PaoloMattioni http://am.ing.unipi.it/index.php?title=An_experimental_analysis_of_laser_machining_for_dental_implants&diff=51 2020-01-07T10:56:58Z

<p>PaoloMattioni: </p> <hr /> <div>:'''Authors and full affiliations:''' Michela Dalle Mura, Gino Dini, Michele Lanzetta, Andrea Rossi<br /> :'''Keywords:''' Laser Machining; Subtractive process; Dental implants; Ceramics; Polymers<br /> :'''Abstract:''' In the recent years, the scientific progress in both technological and medical sectors has led to an evolution of materials and fabrication techniques used for dental prosthetics. This paper proposes laser subtractive process to manufacture dental implants and explores the behavior of a CO2 laser beam effects on biocompatible materials, namely zirconia and PMMA. The aims of the experiments are the study of CO2 laser beam effects on biocompatible materials and the creation of a mathematical model to relate the process parameters with groove geometry and surface finish.<br /> :'''Purpose:''' the aim of this work is to experimentally analyse the potential of the laser subtractive process as a new method for the creation of dental implants.<br /> :'''Design/methodology/approach:''' application of a subtractive process generating a high concentration of energy density, the heat focuses on an extremely small superficial portion. The material molecules, thanks to a vibrational motion, overheat till the cutting temperature.<br /> <br /> :'''Findings:''' the use of the laser technique allows for better and more precise results<br /> :'''Limitations:''' the groove shape obtained with the laser is less circular than that obtained with other methods<br /> :'''Practical implications:''' fast and precise process<br /> :'''Originality/value:''' this method offers a competitive advantage over conventional materials by means of the increasing efficiency of the applications for groove fabrication on biomaterials.<br /> <br /> :'''Graphical abstract:'''[[File:Milling_vs_Laser.jpg|thumb|Millin vs Laser]]<br /> <br /> :'''Main references:''' [1] Çelen S, Özden, H. Laser-induced novel patterns: As smart strain actuators for new-age dental implant surfaces. Applied Surface Science 2012; 263. p: 579-585.[2] Minamizato T. Slip-cast zirconia dental roots with tunnels drilled by laser process. The Journal of prosthetic dentistry 1990; 63.6. p: 677-684.[6] Papaspyridakos P, Lal K. Complete arch implant rehabilitation using subtractive rapid prototyping and porcelain fused to zirconia prosthesis: a clinical report. The Journal of prosthetic dentistry 2008; 100.3. p: 165-172.[9] Romoli L, Tantussi G, Dini G. Layered laser vaporization of PMMA manufacturing 3D mould cavities. CIRP Annals-Manufacturing Technology 2007;56.1. p: 209-212.[10] Romoli L, Tantussi G, Dini G. Experimental approach to the laser machining of PMMA substrates for the fabrication of microfluidic devices. Optics and Lasers in Engineering 2011; 49.3. p: 419-427.<br /> <br /> :'''Link:''' https://www.sciencedirect.com/science/article/pii/S2212827117311708</div>

PaoloMattioni http://am.ing.unipi.it/index.php?title=An_experimental_analysis_of_laser_machining_for_dental_implants&diff=50 2020-01-07T10:56:15Z

<p>PaoloMattioni: </p> <hr /> <div>:'''Authors and full affiliations:''' Michela Dalle Mura, Gino Dini, Michele Lanzetta, Andrea Rossi<br /> :'''Keywords:''' Laser Machining; Subtractive process; Dental implants; Ceramics; Polymers<br /> :'''Abstract:''' In the recent years, the scientific progress in both technological and medical sectors has led to an evolution of materials and fabrication techniques used for dental prosthetics. This paper proposes laser subtractive process to manufacture dental implants and explores the behavior of a CO2 laser beam effects on biocompatible materials, namely zirconia and PMMA. The aims of the experiments are the study of CO2 laser beam effects on biocompatible materials and the creation of a mathematical model to relate the process parameters with groove geometry and surface finish.<br /> :'''Purpose:''' the aim of this work is to experimentally analyse the potential of the laser subtractive process as a new method for the creation of dental implants.<br /> :'''Design/methodology/approach:''' application of a subtractive process generating a high concentration of energy density, the heat focuses on an extremely small superficial portion. The material molecules, thanks to a vibrational motion, overheat till the cutting temperature.<br /> <br /> :'''Findings:''' the use of the laser technique allows for better and more precise results<br /> :'''Limitations:''' the groove shape obtained with the laser is less circular than that obtained with other methods<br /> :'''Practical implications:''' fast and precise process<br /> :'''Originality/value:''' this method offers a competitive advantage over conventional materials by means of the increasing efficiency of the applications for groove fabrication on biomaterials.<br /> <br /> :'''Graphical abstract:'''[[File:Milling_vs_Laser.jpg|thumb|Millin vs Laser]]<br /> <br /> :'''References:''' [1] Çelen S, Özden, H. Laser-induced novel patterns: As smart strain actuators for new-age dental implant surfaces. Applied Surface Science 2012; 263. p: 579-585.[2] Minamizato T. Slip-cast zirconia dental roots with tunnels drilled by laser process. The Journal of prosthetic dentistry 1990; 63.6. p: 677-684.[6] Papaspyridakos P, Lal K. Complete arch implant rehabilitation using subtractive rapid prototyping and porcelain fused to zirconia prosthesis: a clinical report. The Journal of prosthetic dentistry 2008; 100.3. p: 165-172.[9] Romoli L, Tantussi G, Dini G. Layered laser vaporization of PMMA manufacturing 3D mould cavities. CIRP Annals-Manufacturing Technology 2007;56.1. p: 209-212.[10] Romoli L, Tantussi G, Dini G. Experimental approach to the laser machining of PMMA substrates for the fabrication of microfluidic devices. Optics and Lasers in Engineering 2011; 49.3. p: 419-427.<br /> <br /> :'''Link:''' https://www.sciencedirect.com/science/article/pii/S2212827117311708</div>

PaoloMattioni http://am.ing.unipi.it/index.php?title=An_experimental_analysis_of_laser_machining_for_dental_implants&diff=49 2020-01-07T10:55:38Z

<p>PaoloMattioni: </p> <hr /> <div>:'''Authors and full affiliations:''' Michela Dalle Mura, Gino Dini, Michele Lanzetta, Andrea Rossi<br /> :'''Keywords:''' Laser Machining; Subtractive process; Dental implants; Ceramics; Polymers<br /> :'''Abstract:''' In the recent years, the scientific progress in both technological and medical sectors has led to an evolution of materials and fabrication techniques used for dental prosthetics. This paper proposes laser subtractive process to manufacture dental implants and explores the behavior of a CO2 laser beam effects on biocompatible materials, namely zirconia and PMMA. The aims of the experiments are the study of CO2 laser beam effects on biocompatible materials and the creation of a mathematical model to relate the process parameters with groove geometry and surface finish.<br /> :'''Purpose:''' the aim of this work is to experimentally analyse the potential of the laser subtractive process as a new method for the creation of dental implants.<br /> :'''Design/methodology/approach:''' application of a subtractive process generating a high concentration of energy density, the heat focuses on an extremely small superficial portion. The material molecules, thanks to a vibrational motion, overheat till the cutting temperature.<br /> <br /> :'''Findings:''' the use of the laser technique allows for better and more precise results<br /> :'''Limitations:''' the groove shape obtained with the laser is less circular than that obtained with other methods<br /> :'''Practical implications:''' fast and precise process<br /> :'''Originality/value:''' this method offers a competitive advantage over conventional materials by means of the increasing efficiency of the applications for groove fabrication on biomaterials.<br /> <br /> :'''Graphical abstract:'''[[File:Milling_vs_Laser.jpg|thumb|Millin vs Laser]]<br /> <br /> :'''Main references:''' [1] Çelen S, Özden, H. Laser-induced novel patterns: As smart strain actuators for new-age dental implant surfaces. Applied Surface Science 2012; 263. p: 579-585.[2] Minamizato T. Slip-cast zirconia dental roots with tunnels drilled by laser process. The Journal of prosthetic dentistry 1990; 63.6. p: 677-684.[6] Papaspyridakos P, Lal K. Complete arch implant rehabilitation using subtractive rapid prototyping and porcelain fused to zirconia prosthesis: a clinical report. The Journal of prosthetic dentistry 2008; 100.3. p: 165-172.[9] Romoli L, Tantussi G, Dini G. Layered laser vaporization of PMMA manufacturing 3D mould cavities. CIRP Annals-Manufacturing Technology 2007;56.1. p: 209-212.[10] Romoli L, Tantussi G, Dini G. Experimental approach to the laser machining of PMMA substrates for the fabrication of microfluidic devices. Optics and Lasers in Engineering 2011; 49.3. p: 419-427.<br /> <br /> :'''Link:''' https://www.sciencedirect.com/science/article/pii/S2212827117311708</div>

PaoloMattioni http://am.ing.unipi.it/index.php?title=Design_and_manufacturing_of_patient-specific_orthodontic_appliances_by_computer-aided_engineering_techniques&diff=48 2020-01-07T10:55:10Z

<p>PaoloMattioni: </p> <hr /> <div>:'''Authors and full affiliations:''' Sandro Barone, Paolo Neri, Alessandro Paoli, Armando Viviano Razionale<br /> :'''Keywords:''' Orthodontics, eruption guidance appliance, temporomandibular joint<br /> :'''Abstract''' Orthodontic treatments are usually performed using fixed brackets or removable oral appliances, which are traditionally made from alginate impressions and wax registrations. Among removable devices, eruption guidance appliances are used for early orthodontic treatments in order to intercept and prevent malocclusion problems. Commercially available eruption guidance appliances, however, are symmetric devices produced using a few standard sizes. For this reason, they are not able to meet all the specific patient’s needs since the actual dental anatomies present various geometries and asymmetric conditions. In this article, a computer-aided design-based methodology for the design and manufacturing of a patient-specific eruption guidance appliances is presented. The proposed approach is based on the digitalization of several steps of the overall process: from the digital reconstruction of patients’ anatomies to the manufacturing of customized appliances. A finite element model has been developed to evaluate the temporomandibular joint disks stress level caused by using symmetric eruption guidance appliances with different teeth misalignment conditions. The developed model can then be used to guide the design of a patient-specific appliance with the aim at reducing the patient discomfort. At this purpose, two different customization levels are proposed in order to face both arches and single tooth misalignment issues. A low-cost manufacturing process, based on an additive manufacturing technique, is finally presented and discussed.<br /> :'''Purpose:''' digitalization of several steps of the overall process: from the digital reconstruction of patients’ anatomies to the manufacturing of customized appliances. <br /> :'''Design/methodology/approach:''' A finite element model has been developed to evaluate the temporomandibular joint disks stress level caused by using symmetric eruption guidance appliances with different teeth misalignment conditions<br /> :'''Findings:''' The obtained results demonstrate that standard symmetric implants, which are not customized for the patient-specific anatomy, present critical issues when applied to generic asymmetric anatomie, instead the creation of tailor-made systems would create fewer problems and greater adaptability.<br /> :'''Limitations:''' The relative placement between maxilla and mandible has a significant influence on the overall patient health <br /> :'''Benefits:''' low-cost manufacturing process<br /> :'''Practical implications:''' Improved patient life and lower production costs<br /> :'''Originality/value:''' Better ergonomics of dental implants thanks to the creation of specific models for each patient created with 3D-CAD and AM. <br /> :'''Main references:''' 1. Ingawale S and Goswami T. Temporomandibular joint: disorders, treatments, and biomechanics. Ann Biomed Eng 2009; 37: 976–996. 3. Bergersen EO. The eruption guidance myofunctional appliance: case selection, timing, motivation, indications and contraindications in its use. Funct Orthod 1985; 2: 17–33. 4. Migliaccio S, Aprile V, Zicari S, et al. Eruption guidance appliance: a review. Eur J Paediatr Dent 2014; 15: 163–166. 5. Popescu D and Laptoiu D. Rapid prototyping for patient-specific surgical orthopaedics guides: a systematic literature review. Proc IMechE, Part H: J Engineering in Medicine 2016; 230: 495–515. 6. Al Mortadi N, Eggbeer D, Lewis J, et al. Design and fabrication of a sleep apnea device using computer-aided design/additive manufacture technologies. Proc IMechE, Part H: J Engineering in Medicine 2013; 227: 350–355. 7. Barone S, Paoli A, Razionale AV, et al. Computational design and engineering of polymeric orthodontic aligners. Int J Numer Method Biomed Eng. 2017; 33: 1–15. DOI: 10.1002/cnm.2839. 8. Kravitz ND, Kusnoto B, BeGole E, et al. How well does Invisalign work? A prospective clinical study evaluating the efficacy of tooth movement with Invisalign. Am J Orthod Dentofacial Orthop 2009; 135: 27–35. 9. Pileicikiene G, Surna A, Barauskas R, et al. Finite element analysis of stresses in the maxillary and mandibular dental arches and TMJ articular discs during clenching into maximum intercuspation, anterior and unilateral posterior occlusion. Stomatologija 2007; 9: 121–128. 10. Li GA, Sakamoto M and Chao EYS. A comparison of different methods in predicting static pressure <br /> <br /> :'''Link:''' https://journals.sagepub.com/doi/pdf/10.1177/0954411917742945</div>

PaoloMattioni http://am.ing.unipi.it/index.php?title=Additive_manufacturing_with_vat_polymerization_method_for_precision_polymer_micro_components_production&diff=47 2020-01-07T10:54:47Z

<p>PaoloMattioni: </p> <hr /> <div>:'''Authors and full affiliations:''' Ali Davoudinejada, Lucia C. Diaz-Perezb, Danilo Quagliotti, David Bue Pedersena, José A. Albajez-Garcíab, José A. Yagüe-Fabrab,Guido Tosello<br /> :'''Keywords:''' Micro precision manufacturing, Polymer components<br /> :'''Abstract:''' The today’s business environment, the trend towards more product variety and customization is unbroken. Due to this development, the need of agile and reconfigurable production systems emerged to cope with various products and product families. To design and optimize production systems as well as to choose the optimal product matches, product analysis methods are needed. Indeed, most of the known methods aim to analyze a product or one product family on the physical level. Different product families, however, may differ largely in terms of the number and nature of components. This fact impedes an efficient comparison and choice of appropriate product family combinations for the production system. A new methodology is proposed to analyze existing products in view of their functional and physical architecture. The aim is to cluster these products in new assembly oriented product families for the<br /> :'''Purpose:''' check the dimensional tolerances of the parts produced by additive manufacturing with microscope e polymerization <br /> :'''Design methodology/approach:''' investigation of dimensional and surface tolerance carried out using a focus variation microscope evaluating the contrast of the images with vat polymerization method.<br /> :'''Findings:''' experimentation is allowed to highlight the repeatability of the machine to create quite precise geometries. There are two cases, the cylindrical surfaces are more precise, the box ones are less precise<br /> :'''Limitations:''' to obtain small tolerances further processing is required<br /> :'''Practical implications:''' the additive manufacturing technique allows to crate precise surfaces in the order of ten microns<br /> :'''Originality/value:''' particular measurement technique for additive manufacturing <br /> :'''Main references:''' [1] Adam G, Zimmer D. Design for Additive Manufacturing—Element transitions and aggregated structures. CIRP Journal of Manufacturing Science and Technology 2014;7:20–28. [2] Thompson MK, et al. Design for Additive Manufacturing: Trends, opportunities, considerations and constraints. CIRP Annals - Manufacturing Technology 2016;65:737-760. [3] Moroni G, Petrò S, Polini W. Geometrical product specification and verification in additive manufacturing. CIRP Annals - Manufacturing Technology 2017;66:157-160. [4] Dantan JY et al. Geometrical variations management for additive manufactured product. CIRP Annals - Manufacturing Technology 2017;66:161-164. [5] 17296-2:2015 ISO-DIS, Additive Manufacturing – General Principles – Part 2 Overview of Process Categories and Feedstock. Standard, International Organization for Standardization. [6] Vaezi M, Seitz H, Yang S. A review on 3D micro-additive manufacturing technologies, Int. J. Adv. Manuf. Technol. 2013;67:5:1721-1754. [7] Gibson I, Rosen DW, Stucker B, Photopolymerization Processes, in Additive Manufacturing Technologies, Boston, MA: Springer US 2010:78–119. [8] Decker C, Photoinitiated crosslinking polymerisation, Prog. Polym. Sci. 1996;21:4:593-650. [9] 52900:2015 ISO/ASTM, Additive manufacturing -- General principles -- Terminology. Standard, International Organization for Standardization, p. 19. [10] ASTM International, F2792-12a - Standard Terminology for Additive Manufacturing Technologies 2013.<br /> :'''Link:''' https://www.sciencedirect.com/science/article/pii/S2212827118305651</div>

PaoloMattioni http://am.ing.unipi.it/index.php?title=Additive_manufacturing_with_vat_polymerization_method_for_precision_polymer_micro_components_production&diff=46 2019-12-12T16:37:09Z

<p>PaoloMattioni: </p> <hr /> <div>:'''Authors and full affiliations:''' Ali Davoudinejada, Lucia C. Diaz-Perezb, Danilo Quagliotti, David Bue Pedersena, José A. Albajez-Garcíab, José A. Yagüe-Fabrab,Guido Tosello<br /> :'''Keywords:''' Micro precision manufacturing, Polymer components<br /> :'''Abstract:''' The today’s business environment, the trend towards more product variety and customization is unbroken. Due to this development, the need of agile and reconfigurable production systems emerged to cope with various products and product families. To design and optimize production systems as well as to choose the optimal product matches, product analysis methods are needed. Indeed, most of the known methods aim to analyze a product or one product family on the physical level. Different product families, however, may differ largely in terms of the number and nature of components. This fact impedes an efficient comparison and choice of appropriate product family combinations for the production system. A new methodology is proposed to analyze existing products in view of their functional and physical architecture. The aim is to cluster these products in new assembly oriented product families for the<br /> :'''Purpose:''' check the dimensional tolerances of the parts produced by additive manufacturing with microscope e polymerization <br /> :'''Design methodology/approach:''' investigation of dimensional and surface tolerance carried out using a focus variation microscope evaluating the contrast of the images with vat polymerization method.<br /> :'''Findings:''' experimentation is allowed to highlight the repeatability of the machine to create quite precise geometries. There are two cases, the cylindrical surfaces are more precise, the box ones are less precise<br /> :'''Limitations:''' to obtain small tolerances further processing is required<br /> :'''Practical implications:''' the additive manufacturing technique allows to crate precise surfaces in the order of ten microns<br /> :'''Originality/value:''' particular measurement technique for additive manufacturing <br /> :'''References:''' [1] Adam G, Zimmer D. Design for Additive Manufacturing—Element transitions and aggregated structures. CIRP Journal of Manufacturing Science and Technology 2014;7:20–28. [2] Thompson MK, et al. Design for Additive Manufacturing: Trends, opportunities, considerations and constraints. CIRP Annals - Manufacturing Technology 2016;65:737-760. [3] Moroni G, Petrò S, Polini W. Geometrical product specification and verification in additive manufacturing. CIRP Annals - Manufacturing Technology 2017;66:157-160. [4] Dantan JY et al. Geometrical variations management for additive manufactured product. CIRP Annals - Manufacturing Technology 2017;66:161-164. [5] 17296-2:2015 ISO-DIS, Additive Manufacturing – General Principles – Part 2 Overview of Process Categories and Feedstock. Standard, International Organization for Standardization. [6] Vaezi M, Seitz H, Yang S. A review on 3D micro-additive manufacturing technologies, Int. J. Adv. Manuf. Technol. 2013;67:5:1721-1754. [7] Gibson I, Rosen DW, Stucker B, Photopolymerization Processes, in Additive Manufacturing Technologies, Boston, MA: Springer US 2010:78–119. [8] Decker C, Photoinitiated crosslinking polymerisation, Prog. Polym. Sci. 1996;21:4:593-650. [9] 52900:2015 ISO/ASTM, Additive manufacturing -- General principles -- Terminology. Standard, International Organization for Standardization, p. 19. [10] ASTM International, F2792-12a - Standard Terminology for Additive Manufacturing Technologies 2013.<br /> :'''Link:''' https://www.sciencedirect.com/science/article/pii/S2212827118305651</div>

PaoloMattioni http://am.ing.unipi.it/index.php?title=Additive_manufacturing_with_vat_polymerization_method_for_precision_polymer_micro_components_production&diff=45 2019-12-12T16:36:38Z

<p>PaoloMattioni: </p> <hr /> <div>:'''Authors and full affiliations:''' Ali Davoudinejada, Lucia C. Diaz-Perezb, Danilo Quagliottia, David Bue Pedersena, José A. Albajez-Garcíab, José A. Yagüe-Fabrab,Guido Toselloa<br /> :'''Keywords:''' Micro precision manufacturing, Polymer components<br /> :'''Abstract:''' The today’s business environment, the trend towards more product variety and customization is unbroken. Due to this development, the need of agile and reconfigurable production systems emerged to cope with various products and product families. To design and optimize production systems as well as to choose the optimal product matches, product analysis methods are needed. Indeed, most of the known methods aim to analyze a product or one product family on the physical level. Different product families, however, may differ largely in terms of the number and nature of components. This fact impedes an efficient comparison and choice of appropriate product family combinations for the production system. A new methodology is proposed to analyze existing products in view of their functional and physical architecture. The aim is to cluster these products in new assembly oriented product families for the<br /> :'''Purpose:''' check the dimensional tolerances of the parts produced by additive manufacturing with microscope e polymerization <br /> :'''Design methodology/approach:''' investigation of dimensional and surface tolerance carried out using a focus variation microscope evaluating the contrast of the images with vat polymerization method.<br /> :'''Findings:''' experimentation is allowed to highlight the repeatability of the machine to create quite precise geometries. There are two cases, the cylindrical surfaces are more precise, the box ones are less precise<br /> :'''Limitations:''' to obtain small tolerances further processing is required<br /> :'''Practical implications:''' the additive manufacturing technique allows to crate precise surfaces in the order of ten microns<br /> :'''Originality/value:''' particular measurement technique for additive manufacturing <br /> :'''References:''' [1] Adam G, Zimmer D. Design for Additive Manufacturing—Element transitions and aggregated structures. CIRP Journal of Manufacturing Science and Technology 2014;7:20–28. [2] Thompson MK, et al. Design for Additive Manufacturing: Trends, opportunities, considerations and constraints. CIRP Annals - Manufacturing Technology 2016;65:737-760. [3] Moroni G, Petrò S, Polini W. Geometrical product specification and verification in additive manufacturing. CIRP Annals - Manufacturing Technology 2017;66:157-160. [4] Dantan JY et al. Geometrical variations management for additive manufactured product. CIRP Annals - Manufacturing Technology 2017;66:161-164. [5] 17296-2:2015 ISO-DIS, Additive Manufacturing – General Principles – Part 2 Overview of Process Categories and Feedstock. Standard, International Organization for Standardization. [6] Vaezi M, Seitz H, Yang S. A review on 3D micro-additive manufacturing technologies, Int. J. Adv. Manuf. Technol. 2013;67:5:1721-1754. [7] Gibson I, Rosen DW, Stucker B, Photopolymerization Processes, in Additive Manufacturing Technologies, Boston, MA: Springer US 2010:78–119. [8] Decker C, Photoinitiated crosslinking polymerisation, Prog. Polym. Sci. 1996;21:4:593-650. [9] 52900:2015 ISO/ASTM, Additive manufacturing -- General principles -- Terminology. Standard, International Organization for Standardization, p. 19. [10] ASTM International, F2792-12a - Standard Terminology for Additive Manufacturing Technologies 2013.<br /> :'''Link:''' https://www.sciencedirect.com/science/article/pii/S2212827118305651</div>

PaoloMattioni http://am.ing.unipi.it/index.php?title=Additive_manufacturing_with_vat_polymerization_method_for_precision_polymer_micro_components_production&diff=44 2019-12-12T16:36:09Z

<p>PaoloMattioni: </p> <hr /> <div>:'''Authors and full affiliations:''' Ali Davoudinejada, Lucia C. Diaz-Perezb, Danilo Quagliottia, David Bue Pedersena, José A. Albajez-Garcíab, José A. Yagüe-Fabrab,Guido Toselloa<br /> :'''Keywords:''' Micro precision manufacturing, Polymer components<br /> :'''Abstract:''' The today’s business environment, the trend towards more product variety and customization is unbroken. Due to this development, the need of agile and reconfigurable production systems emerged to cope with various products and product families. To design and optimize production systems as well as to choose the optimal product matches, product analysis methods are needed. Indeed, most of the known methods aim to analyze a product or one product family on the physical level. Different product families, however, may differ largely in terms of the number and nature of components. This fact impedes an efficient comparison and choice of appropriate product family combinations for the production system. A new methodology is proposed to analyze existing products in view of their functional and physical architecture. The aim is to cluster these products in new assembly oriented product families for the<br /> :'''Purpose:''' check the dimensional tolerances of the parts produced by additive manufacturing with microscope e polymerization <br /> :'''Design methodology/approach:''' investigation of dimensional and surface tolerance carried out using a focus variation microscope evaluating the contrast of the images with vat polymerization method.<br /> :'''Findings:''' experimentation is allowed to highlight the repeatability of the machine to create quite precise geometries. There are two cases, the cylindrical surfaces are more precise, the box ones are less precise<br /> :'''Limitations:''' to obtain small tolerances further processing is required<br /> :'''Practical implications:''' the additive manufacturing technique allows to crate precise surfaces in the order of ten microns<br /> :'''Originality/value:''' a particular measurement technique for additive manufacturing <br /> :'''References:''' [1] Adam G, Zimmer D. Design for Additive Manufacturing—Element transitions and aggregated structures. CIRP Journal of Manufacturing Science and Technology 2014;7:20–28. [2] Thompson MK, et al. Design for Additive Manufacturing: Trends, opportunities, considerations and constraints. CIRP Annals - Manufacturing Technology 2016;65:737-760. [3] Moroni G, Petrò S, Polini W. Geometrical product specification and verification in additive manufacturing. CIRP Annals - Manufacturing Technology 2017;66:157-160. [4] Dantan JY et al. Geometrical variations management for additive manufactured product. CIRP Annals - Manufacturing Technology 2017;66:161-164. [5] 17296-2:2015 ISO-DIS, Additive Manufacturing – General Principles – Part 2 Overview of Process Categories and Feedstock. Standard, International Organization for Standardization. [6] Vaezi M, Seitz H, Yang S. A review on 3D micro-additive manufacturing technologies, Int. J. Adv. Manuf. Technol. 2013;67:5:1721-1754. [7] Gibson I, Rosen DW, Stucker B, Photopolymerization Processes, in Additive Manufacturing Technologies, Boston, MA: Springer US 2010:78–119. [8] Decker C, Photoinitiated crosslinking polymerisation, Prog. Polym. Sci. 1996;21:4:593-650. [9] 52900:2015 ISO/ASTM, Additive manufacturing -- General principles -- Terminology. Standard, International Organization for Standardization, p. 19. [10] ASTM International, F2792-12a - Standard Terminology for Additive Manufacturing Technologies 2013.<br /> :'''Link:''' https://www.sciencedirect.com/science/article/pii/S2212827118305651</div>

PaoloMattioni http://am.ing.unipi.it/index.php?title=Additive_manufacturing_with_vat_polymerization_method_for_precision_polymer_micro_components_production&diff=43 2019-12-12T16:35:48Z

<p>PaoloMattioni: Creata pagina con &quot;:'''Authors and full affiliations:''' Ali Davoudinejada, Lucia C. Diaz-Perezb, Danilo Quagliottia, David Bue Pedersena, José A. Albajez-Garcíab, José A. Yagüe-Fabrab,Guido...&quot;</p> <hr /> <div>:'''Authors and full affiliations:''' Ali Davoudinejada, Lucia C. Diaz-Perezb, Danilo Quagliottia, David Bue Pedersena, José A. Albajez-Garcíab, José A. Yagüe-Fabrab,Guido Toselloa<br /> :'''Keywords:''' Micro precision manufacturing, Polymer components<br /> :'''Abstract:''' The today’s business environment, the trend towards more product variety and customization is unbroken. Due to this development, the need of agile and reconfigurable production systems emerged to cope with various products and product families. To design and optimize production systems as well as to choose the optimal product matches, product analysis methods are needed. Indeed, most of the known methods aim to analyze a product or one product family on the physical level. Different product families, however, may differ largely in terms of the number and nature of components. This fact impedes an efficient comparison and choice of appropriate product family combinations for the production system. A new methodology is proposed to analyze existing products in view of their functional and physical architecture. The aim is to cluster these products in new assembly oriented product families for the<br /> :'''Purpose:''' check the dimensional tolerances of the parts produced by additive manufacturing with microscope e polymerization <br /> :'''Design methodology/approach:''' investigation of dimensional and surface tolerance carried out using a focus variation microscope evaluating the contrast of the images with vat polymerization method.<br /> :'''Findings:''' experimentation is allowed to highlight the repeatability of the machine to create quite precise geometries. There are two cases, the cylindrical surfaces are more precise, the box ones are less precise<br /> :'''Limitations:''' to obtain small tolerances further processing is required<br /> :'''Practical implications:''' the additive manufacturing technique allows to crate precise surfaces in the order of ten microns<br /> :'''Originality/value:'' a particular measurement technique for additive manufacturing <br /> :'''References:''' [1] Adam G, Zimmer D. Design for Additive Manufacturing—Element transitions and aggregated structures. CIRP Journal of Manufacturing Science and Technology 2014;7:20–28. [2] Thompson MK, et al. Design for Additive Manufacturing: Trends, opportunities, considerations and constraints. CIRP Annals - Manufacturing Technology 2016;65:737-760. [3] Moroni G, Petrò S, Polini W. Geometrical product specification and verification in additive manufacturing. CIRP Annals - Manufacturing Technology 2017;66:157-160. [4] Dantan JY et al. Geometrical variations management for additive manufactured product. CIRP Annals - Manufacturing Technology 2017;66:161-164. [5] 17296-2:2015 ISO-DIS, Additive Manufacturing – General Principles – Part 2 Overview of Process Categories and Feedstock. Standard, International Organization for Standardization. [6] Vaezi M, Seitz H, Yang S. A review on 3D micro-additive manufacturing technologies, Int. J. Adv. Manuf. Technol. 2013;67:5:1721-1754. [7] Gibson I, Rosen DW, Stucker B, Photopolymerization Processes, in Additive Manufacturing Technologies, Boston, MA: Springer US 2010:78–119. [8] Decker C, Photoinitiated crosslinking polymerisation, Prog. Polym. Sci. 1996;21:4:593-650. [9] 52900:2015 ISO/ASTM, Additive manufacturing -- General principles -- Terminology. Standard, International Organization for Standardization, p. 19. [10] ASTM International, F2792-12a - Standard Terminology for Additive Manufacturing Technologies 2013.<br /> :'''Link:''' https://www.sciencedirect.com/science/article/pii/S2212827118305651</div>

PaoloMattioni http://am.ing.unipi.it/index.php?title=Vat_Polymerization&diff=42 2019-12-12T16:30:57Z

<p>PaoloMattioni: Creata pagina con &quot;Additive manufacturing with vat polymerization method for precision polymer micro components production&quot;</p> <hr /> <div>[[Additive manufacturing with vat polymerization method for precision polymer micro components production]]</div>

PaoloMattioni http://am.ing.unipi.it/index.php?title=Main_Page&diff=41 2019-12-12T16:30:31Z

<p>PaoloMattioni: /* Processes */</p> <hr /> <div>=[[Materials]]=<br /> =[[Processes]]=<br /> *[[Fused Deposition Modeling]]<br /> *[[Laser Machining]]<br /> *[[Material Jetting]]<br /> *[[Vat Polymerization]]<br /> <br /> =[[Parts]]=<br /> [[Design for AM]]<br /> <br /> [[Speciale:CreaUtenza]]</div>

PaoloMattioni http://am.ing.unipi.it/index.php?title=Design_and_manufacturing_of_patient-specific_orthodontic_appliances_by_computer-aided_engineering_techniques&diff=40 2019-12-12T16:26:39Z

<p>PaoloMattioni: </p> <hr /> <div>:'''Authors and full affiliations:''' Sandro Barone, Paolo Neri, Alessandro Paoli, Armando Viviano Razionale<br /> :'''Keywords:''' Orthodontics, eruption guidance appliance, temporomandibular joint<br /> :'''Abstract''' Orthodontic treatments are usually performed using fixed brackets or removable oral appliances, which are traditionally made from alginate impressions and wax registrations. Among removable devices, eruption guidance appliances are used for early orthodontic treatments in order to intercept and prevent malocclusion problems. Commercially available eruption guidance appliances, however, are symmetric devices produced using a few standard sizes. For this reason, they are not able to meet all the specific patient’s needs since the actual dental anatomies present various geometries and asymmetric conditions. In this article, a computer-aided design-based methodology for the design and manufacturing of a patient-specific eruption guidance appliances is presented. The proposed approach is based on the digitalization of several steps of the overall process: from the digital reconstruction of patients’ anatomies to the manufacturing of customized appliances. A finite element model has been developed to evaluate the temporomandibular joint disks stress level caused by using symmetric eruption guidance appliances with different teeth misalignment conditions. The developed model can then be used to guide the design of a patient-specific appliance with the aim at reducing the patient discomfort. At this purpose, two different customization levels are proposed in order to face both arches and single tooth misalignment issues. A low-cost manufacturing process, based on an additive manufacturing technique, is finally presented and discussed.<br /> :'''Purpose:''' digitalization of several steps of the overall process: from the digital reconstruction of patients’ anatomies to the manufacturing of customized appliances. <br /> :'''Design/methodology/approach:''' A finite element model has been developed to evaluate the temporomandibular joint disks stress level caused by using symmetric eruption guidance appliances with different teeth misalignment conditions<br /> :'''Findings:''' The obtained results demonstrate that standard symmetric implants, which are not customized for the patient-specific anatomy, present critical issues when applied to generic asymmetric anatomie, instead the creation of tailor-made systems would create fewer problems and greater adaptability.<br /> :'''Limitations:''' The relative placement between maxilla and mandible has a significant influence on the overall patient health <br /> :'''Benefits:''' low-cost manufacturing process<br /> :'''Practical implications:''' Improved patient life and lower production costs<br /> :'''Originality/value:''' Better ergonomics of dental implants thanks to the creation of specific models for each patient created with 3D-CAD and AM. <br /> :'''References:''' 1. Ingawale S and Goswami T. Temporomandibular joint: disorders, treatments, and biomechanics. Ann Biomed Eng 2009; 37: 976–996. 3. Bergersen EO. The eruption guidance myofunctional appliance: case selection, timing, motivation, indications and contraindications in its use. Funct Orthod 1985; 2: 17–33. 4. Migliaccio S, Aprile V, Zicari S, et al. Eruption guidance appliance: a review. Eur J Paediatr Dent 2014; 15: 163–166. 5. Popescu D and Laptoiu D. Rapid prototyping for patient-specific surgical orthopaedics guides: a systematic literature review. Proc IMechE, Part H: J Engineering in Medicine 2016; 230: 495–515. 6. Al Mortadi N, Eggbeer D, Lewis J, et al. Design and fabrication of a sleep apnea device using computer-aided design/additive manufacture technologies. Proc IMechE, Part H: J Engineering in Medicine 2013; 227: 350–355. 7. Barone S, Paoli A, Razionale AV, et al. Computational design and engineering of polymeric orthodontic aligners. Int J Numer Method Biomed Eng. 2017; 33: 1–15. DOI: 10.1002/cnm.2839. 8. Kravitz ND, Kusnoto B, BeGole E, et al. How well does Invisalign work? A prospective clinical study evaluating the efficacy of tooth movement with Invisalign. Am J Orthod Dentofacial Orthop 2009; 135: 27–35. 9. Pileicikiene G, Surna A, Barauskas R, et al. Finite element analysis of stresses in the maxillary and mandibular dental arches and TMJ articular discs during clenching into maximum intercuspation, anterior and unilateral posterior occlusion. Stomatologija 2007; 9: 121–128. 10. Li GA, Sakamoto M and Chao EYS. A comparison of different methods in predicting static pressure <br /> <br /> :'''Link:''' https://journals.sagepub.com/doi/pdf/10.1177/0954411917742945</div>

PaoloMattioni http://am.ing.unipi.it/index.php?title=Design_and_manufacturing_of_patient-specific_orthodontic_appliances_by_computer-aided_engineering_techniques&diff=39 2019-12-12T16:26:06Z

<p>PaoloMattioni: </p> <hr /> <div>:'''Authors and full affiliations:''' Sandro Barone, Paolo Neri, Alessandro Paoli, Armando Viviano Razionale<br /> :'''Keywords:''' Orthodontics, eruption guidance appliance, temporomandibular joint<br /> :'''Abstract''' Orthodontic treatments are usually performed using fixed brackets or removable oral appliances, which are traditionally made from alginate impressions and wax registrations. Among removable devices, eruption guidance appliances are used for early orthodontic treatments in order to intercept and prevent malocclusion problems. Commercially available eruption guidance appliances, however, are symmetric devices produced using a few standard sizes. For this reason, they are not able to meet all the specific patient’s needs since the actual dental anatomies present various geometries and asymmetric conditions. In this article, a computer-aided design-based methodology for the design and manufacturing of a patient-specific eruption guidance appliances is presented. The proposed approach is based on the digitalization of several steps of the overall process: from the digital reconstruction of patients’ anatomies to the manufacturing of customized appliances. A finite element model has been developed to evaluate the temporomandibular joint disks stress level caused by using symmetric eruption guidance appliances with different teeth misalignment conditions. The developed model can then be used to guide the design of a patient-specific appliance with the aim at reducing the patient discomfort. At this purpose, two different customization levels are proposed in order to face both arches and single tooth misalignment issues. A low-cost manufacturing process, based on an additive manufacturing technique, is finally presented and discussed.<br /> :'''Purpose:''' digitalization of several steps of the overall process: from the digital reconstruction of patients’ anatomies to the manufacturing of customized appliances. <br /> :'''Design/methodology/approach:''' A finite element model has been developed to evaluate the temporomandibular joint disks stress level caused by using symmetric eruption guidance appliances with different teeth misalignment conditions<br /> :'''Findings:''' The obtained results demonstrate that standard symmetric implants, which are not customized for the patient-specific anatomy, present critical issues when applied to generic asymmetric anatomie, instead the creation of tailor-made systems would create fewer problems and greater adaptability.<br /> :'''Limitations:''' The relative placement between maxilla and mandible has a significant influence on the overall patient health <br /> :'''Benefits:''' low-cost manufacturing process<br /> :'''Practical implications:''' Improved patient life and lower production costs<br /> :'''Originality/value:''' Better ergonomics of dental implants thanks to the creation of specific models for each patient created with 3D-CAD and AM. <br /> :'''References:''' 1. Ingawale S and Goswami T. Temporomandibular joint: disorders, treatments, and biomechanics. Ann Biomed Eng 2009; 37: 976–996. 3. Bergersen EO. The eruption guidance myofunctional appliance: case selection, timing, motivation, indications and contraindications in its use. Funct Orthod 1985; 2: 17–33. 4. Migliaccio S, Aprile V, Zicari S, et al. Eruption guidance appliance: a review. Eur J Paediatr Dent 2014; 15: 163–166. 5. Popescu D and Laptoiu D. Rapid prototyping for patient-specific surgical orthopaedics guides: a systematic literature review. Proc IMechE, Part H: J Engineering in Medicine 2016; 230: 495–515. 6. Al Mortadi N, Eggbeer D, Lewis J, et al. Design and fabrication of a sleep apnea device using computer-aided design/additive manufacture technologies. Proc IMechE, Part H: J Engineering in Medicine 2013; 227: 350–355. 7. Barone S, Paoli A, Razionale AV, et al. Computational design and engineering of polymeric orthodontic aligners. Int J Numer Method Biomed Eng. 2017; 33: 1–15. DOI: 10.1002/cnm.2839. 8. Kravitz ND, Kusnoto B, BeGole E, et al. How well does Invisalign work? A prospective clinical study evaluating the efficacy of tooth movement with Invisalign. Am J Orthod Dentofacial Orthop 2009; 135: 27–35. 9. Pileicikiene G, Surna A, Barauskas R, et al. Finite element analysis of stresses in the maxillary and mandibular dental arches and TMJ articular discs during clenching into maximum intercuspation, anterior and unilateral posterior occlusion. Stomatologija 2007; 9: 121–128. 10. Li GA, Sakamoto M and Chao EYS. A comparison of different methods in predicting static pressure <br /> <br /> <br /> :'''Link:''' https://journals.sagepub.com/doi/pdf/10.1177/0954411917742945</div>

PaoloMattioni http://am.ing.unipi.it/index.php?title=Design_and_manufacturing_of_patient-specific_orthodontic_appliances_by_computer-aided_engineering_techniques&diff=38 2019-12-12T16:24:58Z

<p>PaoloMattioni: Creata pagina con &quot;:'''Authors and full affiliations:''' Sandro Barone, Paolo Neri, Alessandro Paoli, Armando Viviano Razionale :'''Keywords:''' Orthodontics, eruption guidance appliance, tempor...&quot;</p> <hr /> <div>:'''Authors and full affiliations:''' Sandro Barone, Paolo Neri, Alessandro Paoli, Armando Viviano Razionale<br /> :'''Keywords:''' Orthodontics, eruption guidance appliance, temporomandibular joint<br /> :'''Abstract (original)''' Orthodontic treatments are usually performed using fixed brackets or removable oral appliances, which are traditionally made from alginate impressions and wax registrations. Among removable devices, eruption guidance appliances are used for early orthodontic treatments in order to intercept and prevent malocclusion problems. Commercially available eruption guidance appliances, however, are symmetric devices produced using a few standard sizes. For this reason, they are not able to meet all the specific patient’s needs since the actual dental anatomies present various geometries and asymmetric conditions. In this article, a computer-aided design-based methodology for the design and manufacturing of a patient-specific eruption guidance appliances is presented. The proposed approach is based on the digitalization of several steps of the overall process: from the digital reconstruction of patients’ anatomies to the manufacturing of customized appliances. <br /> A finite element model has been developed to evaluate the temporomandibular joint disks stress level caused by using symmetric eruption guidance appliances with different teeth misalignment conditions. The developed model can then be used to guide the design of a patient-specific appliance with the aim at reducing the patient discomfort. At this purpose, two different customization levels are proposed in order to face both arches and single tooth misalignment issues. A low-cost manufacturing process, based on an additive manufacturing technique, is finally presented and discussed.<br /> :'''Purpose:''' digitalization of several steps of the overall process: from the digital reconstruction of patients’ anatomies to the manufacturing of customized appliances. <br /> :'''Design/methodology/approach:''' A finite element model has been developed to evaluate the temporomandibular joint disks stress level caused by using symmetric eruption guidance appliances with different teeth misalignment conditions<br /> :'''Findings:''' The obtained results demonstrate that standard symmetric implants, which are not customized for the patient-specific anatomy, present critical issues when applied to generic asymmetric anatomie, instead the creation of tailor-made systems would create fewer problems and greater adaptability.<br /> :'''Limitations:''' The relative placement between maxilla and mandible has a significant influence on the overall patient health <br /> :'''Benefits:''' low-cost manufacturing process<br /> :'''Practical implications:''' Improved patient life and lower production costs<br /> :'''Originality/value:''' Better ergonomics of dental implants thanks to the creation of specific models for each patient created with 3D-CAD and AM. <br /> :'''References:''' 1. Ingawale S and Goswami T. Temporomandibular joint: disorders, treatments, and biomechanics. Ann Biomed Eng 2009; 37: 976–996. 3. Bergersen EO. The eruption guidance myofunctional appliance: case selection, timing, motivation, indications and contraindications in its use. Funct Orthod 1985; 2: 17–33. 4. Migliaccio S, Aprile V, Zicari S, et al. Eruption guidance appliance: a review. Eur J Paediatr Dent 2014; 15: 163–166. 5. Popescu D and Laptoiu D. Rapid prototyping for patient-specific surgical orthopaedics guides: a systematic literature review. Proc IMechE, Part H: J Engineering in Medicine 2016; 230: 495–515. 6. Al Mortadi N, Eggbeer D, Lewis J, et al. Design and fabrication of a sleep apnea device using computer-aided design/additive manufacture technologies. Proc IMechE, Part H: J Engineering in Medicine 2013; 227: 350–355. 7. Barone S, Paoli A, Razionale AV, et al. Computational design and engineering of polymeric orthodontic aligners. Int J Numer Method Biomed Eng. 2017; 33: 1–15. DOI: 10.1002/cnm.2839. 8. Kravitz ND, Kusnoto B, BeGole E, et al. How well does Invisalign work? A prospective clinical study evaluating the efficacy of tooth movement with Invisalign. Am J Orthod Dentofacial Orthop 2009; 135: 27–35. 9. Pileicikiene G, Surna A, Barauskas R, et al. Finite element analysis of stresses in the maxillary and mandibular dental arches and TMJ articular discs during clenching into maximum intercuspation, anterior and unilateral posterior occlusion. Stomatologija 2007; 9: 121–128. 10. Li GA, Sakamoto M and Chao EYS. A comparison of different methods in predicting static pressure <br /> <br /> <br /> :'''Link:''' https://journals.sagepub.com/doi/pdf/10.1177/0954411917742945</div>

PaoloMattioni http://am.ing.unipi.it/index.php?title=Material_Jetting&diff=37 2019-12-12T16:20:34Z

<p>PaoloMattioni: </p> <hr /> <div>[[Design and manufacturing of patient-specific orthodontic appliances by computer-aided engineering techniques]]</div>

PaoloMattioni http://am.ing.unipi.it/index.php?title=Material_Jetting&diff=36 2019-12-12T16:20:21Z

<p>PaoloMattioni: Creata pagina con &quot;Design and manufacturing of patient-specific orthodontic appliances by computer-aided engineering techniques&quot;</p> <hr /> <div>Design and manufacturing of patient-specific orthodontic appliances by computer-aided engineering techniques</div>

PaoloMattioni http://am.ing.unipi.it/index.php?title=Main_Page&diff=35 2019-12-12T16:19:52Z

<p>PaoloMattioni: /* Processes */</p> <hr /> <div>=[[Materials]]=<br /> =[[Processes]]=<br /> *[[Fused Deposition Modeling]]<br /> *[[Laser Machining]]<br /> *[[Material Jetting]]<br /> <br /> =[[Parts]]=<br /> [[Design for AM]]<br /> <br /> [[Speciale:CreaUtenza]]</div>

PaoloMattioni http://am.ing.unipi.it/index.php?title=An_experimental_analysis_of_laser_machining_for_dental_implants&diff=34 2019-12-12T13:35:03Z

<p>PaoloMattioni: </p> <hr /> <div>:'''Authors and full affiliations:''' Michela Dalle Mura, Gino Dini, Michele Lanzetta, Andrea Rossi<br /> :'''Keywords:''' Laser Machining; Subtractive process; Dental implants; Ceramics; Polymers<br /> :'''Abstract:''' In the recent years, the scientific progress in both technological and medical sectors has led to an evolution of materials and fabrication techniques used for dental prosthetics. This paper proposes laser subtractive process to manufacture dental implants and explores the behavior of a CO2 laser beam effects on biocompatible materials, namely zirconia and PMMA. The aims of the experiments are the study of CO2 laser beam effects on biocompatible materials and the creation of a mathematical model to relate the process parameters with groove geometry and surface finish.<br /> :'''Purpose:''' the aim of this work is to experimentally analyse the potential of the laser subtractive process as a new method for the creation of dental implants.<br /> :'''Design/methodology/approach:''' application of a subtractive process generating a high concentration of energy density, the heat focuses on an extremely small superficial portion. The material molecules, thanks to a vibrational motion, overheat till the cutting temperature.<br /> <br /> :'''Findings:''' the use of the laser technique allows for better and more precise results<br /> :'''Limitations:''' the groove shape obtained with the laser is less circular than that obtained with other methods<br /> :'''Practical implications:''' fast and precise process<br /> :'''Originality/value:''' this method offers a competitive advantage over conventional materials by means of the increasing efficiency of the applications for groove fabrication on biomaterials.<br /> <br /> :'''Graphical abstract:'''[[File:Milling_vs_Laser.jpg|thumb|Millin vs Laser]]<br /> <br /> :'''References:''' [1] Çelen S, Özden, H. Laser-induced novel patterns: As smart strain actuators for new-age dental implant surfaces. Applied Surface Science 2012; 263. p: 579-585.[2] Minamizato T. Slip-cast zirconia dental roots with tunnels drilled by laser process. The Journal of prosthetic dentistry 1990; 63.6. p: 677-684.[6] Papaspyridakos P, Lal K. Complete arch implant rehabilitation using subtractive rapid prototyping and porcelain fused to zirconia prosthesis: a clinical report. The Journal of prosthetic dentistry 2008; 100.3. p: 165-172.[9] Romoli L, Tantussi G, Dini G. Layered laser vaporization of PMMA manufacturing 3D mould cavities. CIRP Annals-Manufacturing Technology 2007;56.1. p: 209-212.[10] Romoli L, Tantussi G, Dini G. Experimental approach to the laser machining of PMMA substrates for the fabrication of microfluidic devices. Optics and Lasers in Engineering 2011; 49.3. p: 419-427.<br /> <br /> :'''Link:''' https://www.sciencedirect.com/science/article/pii/S2212827117311708</div>

PaoloMattioni http://am.ing.unipi.it/index.php?title=An_experimental_analysis_of_laser_machining_for_dental_implants&diff=33 2019-12-12T13:34:42Z

<p>PaoloMattioni: </p> <hr /> <div>:'''Authors and full affiliations:''' Michela Dalle Mura, Gino Dini, Michele Lanzetta, Andrea Rossi<br /> :'''Keywords (original - removing obvious one):''' Laser Machining; Subtractive process; Dental implants; Ceramics; Polymers<br /> :'''Abstract:''' In the recent years, the scientific progress in both technological and medical sectors has led to an evolution of materials and fabrication techniques used for dental prosthetics. This paper proposes laser subtractive process to manufacture dental implants and explores the behavior of a CO2 laser beam effects on biocompatible materials, namely zirconia and PMMA. The aims of the experiments are the study of CO2 laser beam effects on biocompatible materials and the creation of a mathematical model to relate the process parameters with groove geometry and surface finish.<br /> :'''Purpose:''' the aim of this work is to experimentally analyse the potential of the laser subtractive process as a new method for the creation of dental implants.<br /> :'''Design/methodology/approach:''' application of a subtractive process generating a high concentration of energy density, the heat focuses on an extremely small superficial portion. The material molecules, thanks to a vibrational motion, overheat till the cutting temperature.<br /> <br /> :'''Findings:''' the use of the laser technique allows for better and more precise results<br /> :'''Limitations:''' the groove shape obtained with the laser is less circular than that obtained with other methods<br /> :'''Practical implications:''' fast and precise process<br /> :'''Originality/value:''' this method offers a competitive advantage over conventional materials by means of the increasing efficiency of the applications for groove fabrication on biomaterials.<br /> <br /> :'''Graphical abstract:'''[[File:Milling_vs_Laser.jpg|thumb|Millin vs Laser]]<br /> <br /> :'''References:''' [1] Çelen S, Özden, H. Laser-induced novel patterns: As smart strain actuators for new-age dental implant surfaces. Applied Surface Science 2012; 263. p: 579-585.[2] Minamizato T. Slip-cast zirconia dental roots with tunnels drilled by laser process. The Journal of prosthetic dentistry 1990; 63.6. p: 677-684.[6] Papaspyridakos P, Lal K. Complete arch implant rehabilitation using subtractive rapid prototyping and porcelain fused to zirconia prosthesis: a clinical report. The Journal of prosthetic dentistry 2008; 100.3. p: 165-172.[9] Romoli L, Tantussi G, Dini G. Layered laser vaporization of PMMA manufacturing 3D mould cavities. CIRP Annals-Manufacturing Technology 2007;56.1. p: 209-212.[10] Romoli L, Tantussi G, Dini G. Experimental approach to the laser machining of PMMA substrates for the fabrication of microfluidic devices. Optics and Lasers in Engineering 2011; 49.3. p: 419-427.<br /> <br /> :'''Link:''' https://www.sciencedirect.com/science/article/pii/S2212827117311708</div>

PaoloMattioni http://am.ing.unipi.it/index.php?title=An_experimental_analysis_of_laser_machining_for_dental_implants&diff=32 2019-12-12T13:34:24Z

<p>PaoloMattioni: </p> <hr /> <div>:'''Authors and full affiliations:''' Michela Dalle Mura, Gino Dini, Michele Lanzetta, Andrea Rossi<br /> :'''Keywords (original - removing obvious one):''' Laser Machining; Subtractive process; Dental implants; Ceramics; Polymers<br /> :'''Abstract:''' In the recent years, the scientific progress in both technological and medical sectors has led to an evolution of materials and fabrication techniques used for dental prosthetics. This paper proposes laser subtractive process to manufacture dental implants and explores the behavior of a CO2 laser beam effects on biocompatible materials, namely zirconia and PMMA. The aims of the experiments are the study of CO2 laser beam effects on biocompatible materials and the creation of a mathematical model to relate the process parameters with groove geometry and surface finish.<br /> :'''Purpose:''' the aim of this work is to experimentally analyse the potential of the laser subtractive process as a new method for the creation of dental implants.<br /> :'''Design/methodology/approach:''' application of a subtractive process generating a high concentration of energy density, the heat focuses on an extremely small superficial portion. The material molecules, thanks to a vibrational motion, overheat till the cutting temperature.<br /> <br /> :'''Findings:''' the use of the laser technique allows for better and more precise results<br /> :'''Limitations:''' the groove shape obtained with the laser is less circular than that obtained with other methods<br /> :'''Practical implications:''' fast and precise process<br /> :'''Originality/value:''' this method offers a competitive advantage over conventional materials by means of the increasing efficiency of the applications for groove fabrication on biomaterials.<br /> <br /> :'''Graphical abstract:''' <br /> [[File:Milling_vs_Laser.jpg|thumb|Millin vs Laser]]<br /> :'''References:''' [1] Çelen S, Özden, H. Laser-induced novel patterns: As smart strain actuators for new-age dental implant surfaces. Applied Surface Science 2012; 263. p: 579-585.[2] Minamizato T. Slip-cast zirconia dental roots with tunnels drilled by laser process. The Journal of prosthetic dentistry 1990; 63.6. p: 677-684.[6] Papaspyridakos P, Lal K. Complete arch implant rehabilitation using subtractive rapid prototyping and porcelain fused to zirconia prosthesis: a clinical report. The Journal of prosthetic dentistry 2008; 100.3. p: 165-172.[9] Romoli L, Tantussi G, Dini G. Layered laser vaporization of PMMA manufacturing 3D mould cavities. CIRP Annals-Manufacturing Technology 2007;56.1. p: 209-212.[10] Romoli L, Tantussi G, Dini G. Experimental approach to the laser machining of PMMA substrates for the fabrication of microfluidic devices. Optics and Lasers in Engineering 2011; 49.3. p: 419-427.<br /> <br /> :'''Link:''' https://www.sciencedirect.com/science/article/pii/S2212827117311708</div>

PaoloMattioni http://am.ing.unipi.it/index.php?title=File:Milling_vs_Laser.jpg&diff=31 2019-12-12T13:32:42Z

<p>PaoloMattioni: Pagina svuotata</p> <hr /> <div></div>

PaoloMattioni http://am.ing.unipi.it/index.php?title=An_experimental_analysis_of_laser_machining_for_dental_implants&diff=30 2019-12-12T13:30:26Z

<p>PaoloMattioni: /* An experimental analysis of laser machining for dental implants */</p> <hr /> <div>:'''Authors and full affiliations:''' Michela Dalle Mura, Gino Dini, Michele Lanzetta, Andrea Rossi<br /> :'''Keywords (original - removing obvious one):''' Laser Machining; Subtractive process; Dental implants; Ceramics; Polymers<br /> :'''Abstract:''' In the recent years, the scientific progress in both technological and medical sectors has led to an evolution of materials and fabrication techniques used for dental prosthetics. This paper proposes laser subtractive process to manufacture dental implants and explores the behavior of a CO2 laser beam effects on biocompatible materials, namely zirconia and PMMA. The aims of the experiments are the study of CO2 laser beam effects on biocompatible materials and the creation of a mathematical model to relate the process parameters with groove geometry and surface finish.<br /> :'''Purpose:''' the aim of this work is to experimentally analyse the potential of the laser subtractive process as a new method for the creation of dental implants.<br /> :'''Design/methodology/approach:''' application of a subtractive process generating a high concentration of energy density, the heat focuses on an extremely small superficial portion. The material molecules, thanks to a vibrational motion, overheat till the cutting temperature.<br /> <br /> :'''Findings:''' the use of the laser technique allows for better and more precise results<br /> :'''Limitations:''' the groove shape obtained with the laser is less circular than that obtained with other methods<br /> :'''Practical implications:''' fast and precise process<br /> :'''Originality/value:''' this method offers a competitive advantage over conventional materials by means of the increasing efficiency of the applications for groove fabrication on biomaterials.<br /> <br /> :'''Graphical abstract:''' <br /> <br /> :'''References:''' <br /> [1] Çelen S, Özden, H. Laser-induced novel patterns: As smart strain actuators for new-age dental implant surfaces. Applied Surface Science 2012; 263. p: 579-585.<br /> [2] Minamizato T. Slip-cast zirconia dental roots with tunnels drilled by laser process. The Journal of prosthetic dentistry 1990; 63.6. p: 677-684.<br /> [6] Papaspyridakos P, Lal K. Complete arch implant rehabilitation using subtractive rapid prototyping and porcelain fused to zirconia prosthesis: a clinical report. The Journal of prosthetic dentistry 2008; 100.3. p: 165-172.<br /> [9] Romoli L, Tantussi G, Dini G. Layered laser vaporization of PMMA manufacturing 3D mould cavities. CIRP Annals-Manufacturing Technology 2007;56.1. p: 209-212.<br /> [10] Romoli L, Tantussi G, Dini G. Experimental approach to the laser machining of PMMA substrates for the fabrication of microfluidic devices. Optics and Lasers in Engineering 2011; 49.3. p: 419-427.<br /> <br /> :'''Link:''' https://www.sciencedirect.com/science/article/pii/S2212827117311708</div>

PaoloMattioni http://am.ing.unipi.it/index.php?title=An_experimental_analysis_of_laser_machining_for_dental_implants&diff=29 2019-12-12T13:27:39Z

<p>PaoloMattioni: /* An experimental analysis of laser machining for dental implants */</p> <hr /> <div>=='''An experimental analysis of laser machining for dental implants'''==<br /> :'''Authors and full affiliations:''' Michela Dalle Mura, Gino Dini, Michele Lanzetta, Andrea Rossi<br /> :'''Keywords (original - removing obvious one):''' Laser Machining; Subtractive process; Dental implants; Ceramics; Polymers<br /> :'''Abstract:''' In the recent years, the scientific progress in both technological and medical sectors has led to an evolution of materials and fabrication techniques used for dental prosthetics. This paper proposes laser subtractive process to manufacture dental implants and explores the behavior of a CO2 laser beam effects on biocompatible materials, namely zirconia and PMMA. The aims of the experiments are the study of CO2 laser beam effects on biocompatible materials and the creation of a mathematical model to relate the process parameters with groove geometry and surface finish.<br /> :'''Purpose:''' the aim of this work is to experimentally analyse the potential of the laser subtractive process as a new method for the creation of dental implants.<br /> :'''Design/methodology/approach:''' application of a subtractive process generating a high concentration of energy density, the heat focuses on an extremely small superficial portion. The material molecules, thanks to a vibrational motion, overheat till the cutting temperature.<br /> <br /> :'''Findings:''' the use of the laser technique allows for better and more precise results<br /> :'''Limitations:''' the groove shape obtained with the laser is less circular than that obtained with other methods<br /> :'''Practical implications:''' fast and precise process<br /> :'''Originality/value:''' this method offers a competitive advantage over conventional materials by means of the increasing efficiency of the applications for groove fabrication on biomaterials.<br /> <br /> :'''Graphical abstract:''' <br /> <br /> [[File:Milling vs Laser.jpg|miniatura]]<br /> <br /> <br /> :'''References:''' <br /> [1] Çelen S, Özden, H. Laser-induced novel patterns: As smart strain actuators for new-age dental implant surfaces. Applied Surface Science 2012; 263. p: 579-585.<br /> [2] Minamizato T. Slip-cast zirconia dental roots with tunnels drilled by laser process. The Journal of prosthetic dentistry 1990; 63.6. p: 677-684.<br /> [6] Papaspyridakos P, Lal K. Complete arch implant rehabilitation using subtractive rapid prototyping and porcelain fused to zirconia prosthesis: a clinical report. The Journal of prosthetic dentistry 2008; 100.3. p: 165-172.<br /> [9] Romoli L, Tantussi G, Dini G. Layered laser vaporization of PMMA manufacturing 3D mould cavities. CIRP Annals-Manufacturing Technology 2007;56.1. p: 209-212.<br /> [10] Romoli L, Tantussi G, Dini G. Experimental approach to the laser machining of PMMA substrates for the fabrication of microfluidic devices. Optics and Lasers in Engineering 2011; 49.3. p: 419-427.<br /> <br /> :'''Link:''' https://www.sciencedirect.com/science/article/pii/S2212827117311708</div>

PaoloMattioni http://am.ing.unipi.it/index.php?title=An_experimental_analysis_of_laser_machining_for_dental_implants&diff=28 2019-12-12T13:26:37Z

<p>PaoloMattioni: /* An experimental analysis of laser machining for dental implants */</p> <hr /> <div>=='''An experimental analysis of laser machining for dental implants'''==<br /> :'''Authors and full affiliations:''' Michela Dalle Mura, Gino Dini, Michele Lanzetta, Andrea Rossi<br /> :'''Keywords (original - removing obvious one):''' Laser Machining; Subtractive process; Dental implants; Ceramics; Polymers<br /> :'''Abstract:''' In the recent years, the scientific progress in both technological and medical sectors has led to an evolution of materials and fabrication techniques used for dental prosthetics. This paper proposes laser subtractive process to manufacture dental implants and explores the behavior of a CO2 laser beam effects on biocompatible materials, namely zirconia and PMMA. The aims of the experiments are the study of CO2 laser beam effects on biocompatible materials and the creation of a mathematical model to relate the process parameters with groove geometry and surface finish.<br /> :'''Purpose:''' the aim of this work is to experimentally analyse the potential of the laser subtractive process as a new method for the creation of dental implants.<br /> :'''Design/methodology/approach:''' application of a subtractive process generating a high concentration of energy density, the heat focuses on an extremely small superficial portion. The material molecules, thanks to a vibrational motion, overheat till the cutting temperature.<br /> <br /> :'''Findings:''' the use of the laser technique allows for better and more precise results<br /> :'''Limitations:''' the groove shape obtained with the laser is less circular than that obtained with other methods<br /> Practical implications: fast and precise process<br /> :'''Originality/value:''' this method offers a competitive advantage over conventional materials by means of the increasing efficiency of the applications for groove fabrication on biomaterials.<br /> <br /> :'''Graphical abstract:''' <br /> <br /> [[File:Milling vs Laser.jpg|miniatura]]<br /> <br /> <br /> :'''References:''' <br /> [1] Çelen S, Özden, H. Laser-induced novel patterns: As smart strain actuators for new-age dental implant surfaces. Applied Surface Science 2012; 263. p: 579-585.<br /> [2] Minamizato T. Slip-cast zirconia dental roots with tunnels drilled by laser process. The Journal of prosthetic dentistry 1990; 63.6. p: 677-684.<br /> [6] Papaspyridakos P, Lal K. Complete arch implant rehabilitation using subtractive rapid prototyping and porcelain fused to zirconia prosthesis: a clinical report. The Journal of prosthetic dentistry 2008; 100.3. p: 165-172.<br /> [9] Romoli L, Tantussi G, Dini G. Layered laser vaporization of PMMA manufacturing 3D mould cavities. CIRP Annals-Manufacturing Technology 2007;56.1. p: 209-212.<br /> [10] Romoli L, Tantussi G, Dini G. Experimental approach to the laser machining of PMMA substrates for the fabrication of microfluidic devices. Optics and Lasers in Engineering 2011; 49.3. p: 419-427.<br /> <br /> :'''Link:''' https://www.sciencedirect.com/science/article/pii/S2212827117311708</div>

PaoloMattioni http://am.ing.unipi.it/index.php?title=An_experimental_analysis_of_laser_machining_for_dental_implants&diff=27 2019-12-12T13:25:43Z

<p>PaoloMattioni: </p> <hr /> <div>=='''An experimental analysis of laser machining for dental implants'''==<br /> :'''Authors and full affiliations:''' Michela Dalle Mura, Gino Dini, Michele Lanzetta, Andrea Rossi<br /> Keywords (original - removing obvious one): Laser Machining; Subtractive process; Dental implants; Ceramics; Polymers<br /> :'''Abstract:''' In the recent years, the scientific progress in both technological and medical sectors has led to an evolution of materials and fabrication techniques used for dental prosthetics. This paper proposes laser subtractive process to manufacture dental implants and explores the behavior of a CO2 laser beam effects on biocompatible materials, namely zirconia and PMMA. The aims of the experiments are the study of CO2 laser beam effects on biocompatible materials and the creation of a mathematical model to relate the process parameters with groove geometry and surface finish.<br /> '''Purpose:''' the aim of this work is to experimentally analyse the potential of the laser subtractive process as a new method for the creation of dental implants.<br /> '''Design/methodology/approach:''' application of a subtractive process generating a high concentration of energy density, the heat focuses on an extremely small superficial portion. The material molecules, thanks to a vibrational motion, overheat till the cutting temperature.<br /> <br /> '''Findings:''' the use of the laser technique allows for better and more precise results<br /> '''Limitations:''' the groove shape obtained with the laser is less circular than that obtained with other methods<br /> Practical implications: fast and precise process<br /> '''Originality/value:''' this method offers a competitive advantage over conventional materials by means of the increasing efficiency of the applications for groove fabrication on biomaterials.<br /> <br /> '''Graphical abstract:''' <br /> <br /> [[File:Milling vs Laser.jpg|miniatura]]<br /> <br /> <br /> '''References:''' <br /> [1] Çelen S, Özden, H. Laser-induced novel patterns: As smart strain actuators for new-age dental implant surfaces. Applied Surface Science 2012; 263. p: 579-585.<br /> [2] Minamizato T. Slip-cast zirconia dental roots with tunnels drilled by laser process. The Journal of prosthetic dentistry 1990; 63.6. p: 677-684.<br /> [6] Papaspyridakos P, Lal K. Complete arch implant rehabilitation using subtractive rapid prototyping and porcelain fused to zirconia prosthesis: a clinical report. The Journal of prosthetic dentistry 2008; 100.3. p: 165-172.<br /> [9] Romoli L, Tantussi G, Dini G. Layered laser vaporization of PMMA manufacturing 3D mould cavities. CIRP Annals-Manufacturing Technology 2007;56.1. p: 209-212.<br /> [10] Romoli L, Tantussi G, Dini G. Experimental approach to the laser machining of PMMA substrates for the fabrication of microfluidic devices. Optics and Lasers in Engineering 2011; 49.3. p: 419-427.<br /> <br /> '''Link:''' https://www.sciencedirect.com/science/article/pii/S2212827117311708</div>

PaoloMattioni http://am.ing.unipi.it/index.php?title=An_experimental_analysis_of_laser_machining_for_dental_implants&diff=26 2019-12-12T13:23:40Z

<p>PaoloMattioni: </p> <hr /> <div> '''An experimental analysis of laser machining for dental implants'''<br /> Authors and full affiliations: Michela Dalle Mura, Gino Dini, Michele Lanzetta, Andrea Rossi<br /> Keywords (original - removing obvious one): Laser Machining; Subtractive process; Dental implants; Ceramics; Polymers<br /> '''Abstract:''' In the recent years, the scientific progress in both technological and medical sectors has led to an evolution of materials and fabrication techniques used for dental prosthetics. This paper proposes laser subtractive process to manufacture dental implants and explores the behavior of a CO2 laser beam effects on biocompatible materials, namely zirconia and PMMA. The aims of the experiments are the study of CO2 laser beam effects on biocompatible materials and the creation of a mathematical model to relate the process parameters with groove geometry and surface finish.<br /> '''Purpose:''' the aim of this work is to experimentally analyse the potential of the laser subtractive process as a new method for the creation of dental implants.<br /> '''Design/methodology/approach:''' application of a subtractive process generating a high concentration of energy density, the heat focuses on an extremely small superficial portion. The material molecules, thanks to a vibrational motion, overheat till the cutting temperature.<br /> <br /> '''Findings:''' the use of the laser technique allows for better and more precise results<br /> '''Limitations:''' the groove shape obtained with the laser is less circular than that obtained with other methods<br /> Practical implications: fast and precise process<br /> '''Originality/value:''' this method offers a competitive advantage over conventional materials by means of the increasing efficiency of the applications for groove fabrication on biomaterials.<br /> <br /> '''Graphical abstract:''' <br /> <br /> [[File:Milling vs Laser.jpg|miniatura]]<br /> <br /> <br /> '''References:''' <br /> [1] Çelen S, Özden, H. Laser-induced novel patterns: As smart strain actuators for new-age dental implant surfaces. Applied Surface Science 2012; 263. p: 579-585.<br /> [2] Minamizato T. Slip-cast zirconia dental roots with tunnels drilled by laser process. The Journal of prosthetic dentistry 1990; 63.6. p: 677-684.<br /> [6] Papaspyridakos P, Lal K. Complete arch implant rehabilitation using subtractive rapid prototyping and porcelain fused to zirconia prosthesis: a clinical report. The Journal of prosthetic dentistry 2008; 100.3. p: 165-172.<br /> [9] Romoli L, Tantussi G, Dini G. Layered laser vaporization of PMMA manufacturing 3D mould cavities. CIRP Annals-Manufacturing Technology 2007;56.1. p: 209-212.<br /> [10] Romoli L, Tantussi G, Dini G. Experimental approach to the laser machining of PMMA substrates for the fabrication of microfluidic devices. Optics and Lasers in Engineering 2011; 49.3. p: 419-427.<br /> <br /> '''Link:''' https://www.sciencedirect.com/science/article/pii/S2212827117311708</div>

PaoloMattioni http://am.ing.unipi.it/index.php?title=An_experimental_analysis_of_laser_machining_for_dental_implants&diff=25 2019-12-12T13:22:48Z

<p>PaoloMattioni: Creata pagina con &quot;'''An experimental analysis of laser machining for dental implants''' Authors and full affiliations: Michela Dalle Mura, Gino Dini, Michele Lanzetta, Andrea Rossi Keywords (or...&quot;</p> <hr /> <div>'''An experimental analysis of laser machining for dental implants'''<br /> Authors and full affiliations: Michela Dalle Mura, Gino Dini, Michele Lanzetta, Andrea Rossi<br /> Keywords (original - removing obvious one): Laser Machining; Subtractive process; Dental implants; Ceramics; Polymers<br /> '''Abstract:''' In the recent years, the scientific progress in both technological and medical sectors has led to an evolution of materials and fabrication techniques used for dental prosthetics. This paper proposes laser subtractive process to manufacture dental implants and explores the behavior of a CO2 laser beam effects on biocompatible materials, namely zirconia and PMMA. The aims of the experiments are the study of CO2 laser beam effects on biocompatible materials and the creation of a mathematical model to relate the process parameters with groove geometry and surface finish.<br /> '''Purpose:''' the aim of this work is to experimentally analyse the potential of the laser subtractive process as a new method for the creation of dental implants.<br /> '''Design/methodology/approach:''' application of a subtractive process generating a high concentration of energy density, the heat focuses on an extremely small superficial portion. The material molecules, thanks to a vibrational motion, overheat till the cutting temperature.<br /> <br /> '''Findings:''' the use of the laser technique allows for better and more precise results<br /> '''Limitations:''' the groove shape obtained with the laser is less circular than that obtained with other methods<br /> Practical implications: fast and precise process<br /> '''Originality/value:''' this method offers a competitive advantage over conventional materials by means of the increasing efficiency of the applications for groove fabrication on biomaterials.<br /> <br /> '''Graphical abstract:''' <br /> <br /> [[File:Milling vs Laser.jpg|miniatura]]<br /> <br /> <br /> '''References:''' <br /> [1] Çelen S, Özden, H. Laser-induced novel patterns: As smart strain actuators for new-age dental implant surfaces. Applied Surface Science 2012; 263. p: 579-585.<br /> [2] Minamizato T. Slip-cast zirconia dental roots with tunnels drilled by laser process. The Journal of prosthetic dentistry 1990; 63.6. p: 677-684.<br /> [6] Papaspyridakos P, Lal K. Complete arch implant rehabilitation using subtractive rapid prototyping and porcelain fused to zirconia prosthesis: a clinical report. The Journal of prosthetic dentistry 2008; 100.3. p: 165-172.<br /> [9] Romoli L, Tantussi G, Dini G. Layered laser vaporization of PMMA manufacturing 3D mould cavities. CIRP Annals-Manufacturing Technology 2007;56.1. p: 209-212.<br /> [10] Romoli L, Tantussi G, Dini G. Experimental approach to the laser machining of PMMA substrates for the fabrication of microfluidic devices. Optics and Lasers in Engineering 2011; 49.3. p: 419-427.<br /> <br /> '''Link:''' https://www.sciencedirect.com/science/article/pii/S2212827117311708</div>

PaoloMattioni http://am.ing.unipi.it/index.php?title=File:Milling_vs_Laser.jpg&diff=24 2019-12-12T12:27:23Z

<p>PaoloMattioni: </p> <hr /> <div>Comparison between milling and laser subtractive process</div>

PaoloMattioni http://am.ing.unipi.it/index.php?title=Laser_Machining&diff=23 2019-12-12T11:24:47Z

<p>PaoloMattioni: Creata pagina con &quot;An experimental analysis of laser machining for dental implants&quot;</p> <hr /> <div>[[An experimental analysis of laser machining for dental implants]]</div>

PaoloMattioni http://am.ing.unipi.it/index.php?title=Main_Page&diff=22 2019-12-12T11:21:38Z

<p>PaoloMattioni: /* Processes */</p> <hr /> <div>=[[Materials]]=<br /> =[[Processes]]=<br /> *[[Fused Deposition Modeling]]<br /> *[[Laser Machining]]<br /> <br /> =[[Parts]]=<br /> [[Design for AM]]<br /> <br /> [[Speciale:CreaUtenza]]</div>

PaoloMattioni http://am.ing.unipi.it/index.php?title=Main_Page&diff=21 2019-12-12T11:21:19Z

<p>PaoloMattioni: /* Processes */</p> <hr /> <div>=[[Materials]]=<br /> =[[Processes]]=<br /> [[Fused Deposition Modeling]]<br /> [[Laser Machining]]<br /> <br /> =[[Parts]]=<br /> [[Design for AM]]<br /> <br /> [[Speciale:CreaUtenza]]</div>

PaoloMattioni http://am.ing.unipi.it/index.php?title=Main_Page&diff=20 2019-12-12T11:21:06Z

<p>PaoloMattioni: /* Laser Machining */</p> <hr /> <div>=[[Materials]]=<br /> =[[Processes]]=<br /> [[Fused Deposition Modeling]]<br /> <br /> =[[Parts]]=<br /> [[Design for AM]]<br /> <br /> [[Speciale:CreaUtenza]]</div>

PaoloMattioni http://am.ing.unipi.it/index.php?title=Main_Page&diff=19 2019-12-12T11:20:58Z

<p>PaoloMattioni: /* Fused Deposition Modeling */</p> <hr /> <div>=[[Materials]]=<br /> =[[Processes]]=<br /> [[Fused Deposition Modeling]]<br /> <br /> =[[Laser Machining]]=<br /> <br /> =[[Parts]]=<br /> [[Design for AM]]<br /> <br /> [[Speciale:CreaUtenza]]</div>

PaoloMattioni http://am.ing.unipi.it/index.php?title=Main_Page&diff=18 2019-12-12T11:20:47Z

<p>PaoloMattioni: /* Processes */</p> <hr /> <div>=[[Materials]]=<br /> =[[Processes]]=<br /> [[Fused Deposition Modeling]]<br /> <br /> =[[Fused Deposition Modeling]]=<br /> =[[Laser Machining]]=<br /> <br /> =[[Parts]]=<br /> [[Design for AM]]<br /> <br /> [[Speciale:CreaUtenza]]</div>

PaoloMattioni http://am.ing.unipi.it/index.php?title=Main_Page&diff=17 2019-12-12T11:20:18Z

<p>PaoloMattioni: /* Processes */</p> <hr /> <div>=[[Materials]]=<br /> =[[Processes]]=<br /> =[[Fused Deposition Modeling]]=<br /> =[[Laser Machining]]=<br /> <br /> =[[Parts]]=<br /> [[Design for AM]]<br /> <br /> [[Speciale:CreaUtenza]]</div>

PaoloMattioni http://am.ing.unipi.it/index.php?title=Main_Page&diff=16 2019-12-12T11:19:17Z

<p>PaoloMattioni: /* Processes */</p> <hr /> <div>=[[Materials]]=<br /> =[[Processes]]=<br /> [[Fused Deposition Modeling]];<br /> [[Laser Machining]]<br /> <br /> =[[Parts]]=<br /> [[Design for AM]]<br /> <br /> [[Speciale:CreaUtenza]]</div>

PaoloMattioni http://am.ing.unipi.it/index.php?title=Main_Page&diff=15 2019-12-12T11:19:04Z

<p>PaoloMattioni: /* Processes */</p> <hr /> <div>=[[Materials]]=<br /> =[[Processes]]=<br /> [[Fused Deposition Modeling]]<br /> [[Laser Machining]]<br /> <br /> =[[Parts]]=<br /> [[Design for AM]]<br /> <br /> [[Speciale:CreaUtenza]]</div>

PaoloMattioni