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Mechanical approach of metal-ceramic crowns obtained with laser-based additive manufacturing methods
Author(s): Liliana Porojan; Cristina Savencu; Adrian Boloș; Lucian Rusu; Sorin Porojan
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Paper 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.

Paper Details

Date Published: 10 August 2018
PDF: 7 pages
Proc. SPIE 10831, Seventh International Conference on Lasers in Medicine, 1083107 (10 August 2018); doi: 10.1117/12.2280228
Show Author Affiliations
Liliana Porojan, Univ. of Medicine and Pharmacy Victor Babes Timisoara (Romania)
Cristina Savencu, Univ. of Medicine and Pharmacy Victor Babes Timisoara (Romania)
Adrian Boloș, Univ. of Medicine and Pharmacy Victor Babes Timisoara (Romania)
Lucian Rusu, Politehnica Univ. Timisoara (Romania)
Sorin Porojan, Univ. of Medicine and Pharmacy Victor Babes Timisoara (Romania)


Published in SPIE Proceedings Vol. 10831:
Seventh International Conference on Lasers in Medicine
Carmen Todea; Adrian Podoleanu; Virgil-Florin Duma, Editor(s)

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