Mechanical approach of metal-ceramic crowns obtained with laser-based additive manufacturing methods

Liliana Porojan; Cristina Savencu; Adrian Boloș; Lucian Rusu; Sorin Porojan

doi:10.1117/12.2280228

10 August 2018 Mechanical approach of metal-ceramic crowns obtained with laser-based additive manufacturing methods

Liliana Porojan, Cristina Savencu, Adrian Boloș, Lucian Rusu, Sorin Porojan

Proceedings Volume 10831, Seventh International Conference on Lasers in Medicine; 1083107 (2018) https://doi.org/10.1117/12.2280228
Event: Seventh International Conference on Lasers in Medicine, 2017, Timisoara, Romania

Abstract

The potential for fabricating metallic dental components directly from digital data using alternative technologies is a topic of ongoing interest. The most recent developed procedures, like laser-based additive manufacturing methods represent an excellent opportunity to increase their application in achieving dental restorations. Purpose: The objective of the study was to assess the fracture behavior of metal-ceramic molar crowns obtained with laser-based additive manufacturing methods related to other manufacturing procedures of the metallic frameworks. Materials and methods: For the experimental analyses metal-ceramic crowns were prepared using alternative technologies for the frameworks: traditional casting (CST), computerized milling (MIL), selective laser sintering (SLS) and selective laser melting (SLM). These were veneered with specific hot-pressed ceramics. Crowns were cemented on duplicated composite dies and tested under compressive load to fracture. Results: Maximal compressive loads were registered. The mean registered values were 2432.93 N for CST, 1955.02 N for MIL, 2104.96 N for SLS and 2141.76 N for SLM. Higher variations between the samples were registered for samples with frameworks obtained with additive manufacturing methods. Conclusion: Application of laser-based additive manufacturing methods is currently a challenge in dental alloys processing. The mechanical behavior of metal-ceramic crowns obtained with different manufacturing technologies is important from clinical point of view and should be related to other structural and morphological characteristics of the frameworks.

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Liliana Porojan, Cristina Savencu, Adrian Boloș, Lucian Rusu, and Sorin Porojan "Mechanical approach of metal-ceramic crowns obtained with laser-based additive manufacturing methods", Proc. SPIE 10831, Seventh International Conference on Lasers in Medicine, 1083107 (10 August 2018); https://doi.org/10.1117/12.2280228

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KEYWORDS

Additive manufacturing

Laser manufacturing

Laser sintering

Laser development

Spatial light modulators

Ceramics

Composites

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