A COMPARISON OF THE QUALITY OF DENTAL CROWNS FROM TI-6AL-4V AND COCR ALLOYS MADE WITH SLM TECHNOLOGY

Viktoria Rajtukova

Abstract


At present, dental replacements are more and more often being made with the use of additive manufacturing. In dentistry, selective laser melting (SLM), which enables the manufacturing of dental replacements from the alloys CoCr and Ti-6Al-4V, is the technology most used. With comparable costs for production, Ti-6Al-4V has significantly better biocompatibility, better mechanical properties and lower weight in comparison with an alloy from CoCr. The goal of the submitted study is a comparison of the precision of production of dental crowns from CoCr alloy and Ti-6Al-4V alloy manufactured on an Mlab cusing R machine. For purposes of the study 30 crowns were manufactured from CoCr alloy and 30 from Ti-6Al-4V alloy on an Mlab cusing R machine, with the settings recommended by the manufacturer. After production the crowns were scanned using a Medit Identica dental scanner. The obtained data were subsequently modified and compared with a nominal CAD model in the Volume Graphics VGStudioMAX 2.2 software. The results are deviations on the level of 95% of coverage of the compared work with nominal geometry for all evaluated groups. The obtained deviations were subsequently processed statistically for the purpose of determining the statistical significance of the difference between the materials.

Keywords


dental crowns, CoCr alloy, Ti-6Al-4V alloy, quality of production, SLM technology,

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Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.

ISSN 0301-5491 (Print)
ISSN 2336-5552 (Online)
Published by the Czech Society for Biomedical Engineering and Medical Informatics and the Faculty of Biomedical Engineering, Czech Technical University in Prague.