Laser Processing

Authors : Michela dalle Mura, Gino Dini , Michele Lanzetta , Andrea Rossi

Keywords: dental implants , CO2 laser , biocompatible materials, preliminary analysis

Purpose: The objective of the experiment is to study the effects of CO2 laser beams on biocompatible materials and the creation of a mathematical model to relate the process parameters to the groove geometry and surface finish.

Methodology: In this article the experiments were applied in particular to material samples such as Zirconia and PMMA types for which the mechanical and physical characteristics and the relative ranges of the preliminary parameters used for the analysis related to the quantities useful for "dimensioning" have been reported the power, speed and focal length of the laser.

Value: The profile for each work performed was observed by an optical sensor and from which it can be seen how the machining of the grooves carried out on PMMA materials approximates the Gaussian which represents the reference model with mean 0 and sigma variance much better in form and geometry.

Limitation and conclusions : Although the work that was carried out represented a preliminary and exploratory analysis with the aim of studying the effects of the subtractive laser technique on different types of materials, the final results showed that the techniques we used can be successfully implemented on the materials to which we have referred.

Practical implication: The tests that have been performed can be classified into two phases: SINGLE STEPS : execution of single passages to obtain individual grooves on different materials 75 grooves were made for each material with the same parameters. MULTIPLE STEPS: execution of more steps for creating multiple parallel grooves.

Link: https://arpi.unipi.it/retrieve/handle/11568/192118/17836/LineFormation3DP-Prime01.pdf