An experimental analysis of laser machining for dental implants

An experimental analysis of laser machining for dental implants

Authors and full affiliations: Michela Dalle Mura, Gino Dini, Michele Lanzetta, Andrea Rossi

Keywords (original - removing obvious one): Laser Machining; Subtractive process; Dental implants; Ceramics; Polymers

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.

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.
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.

Findings: the use of the laser technique allows for better and more precise results
Limitations: the groove shape obtained with the laser is less circular than that obtained with other methods

Practical implications: fast and precise process

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.

Graphical abstract: 

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.

Link: https://www.sciencedirect.com/science/article/pii/S2212827117311708