Interpreting Finite Element Results for Brittle Materials in Endodontic Restorations
Author Information
Author(s): Pérez-González Antonio, Iserte-Vilar José L, González-Lluch Carmen
Primary Institution: Department of Mechanical Engineering and Construction, Universitat Jaume I, Castellón de la Plana, Spain
Hypothesis
How should finite element results for brittle materials of endodontic restorations be interpreted to obtain correct conclusions about possible failure?
Conclusion
The Christensen criterion is recommended for interpreting finite element results in endodontic restorations, and the flexural test is preferred for estimating tensile strength over the diametral tensile test.
Supporting Evidence
- The Christensen criterion predicts similar results as the Von Mises criterion for ductile components.
- Different failure criteria predict different failure points for the diametral tensile test.
- All criteria except Von Mises predict failure for flexural test at the same point of the specimen.
Takeaway
This study helps dentists understand how to better analyze the strength of dental materials using computer simulations, especially for brittle materials like ceramics.
Methodology
Three finite element models were developed to simulate an endodontic restoration and two typical material tests: diametral tensile test and flexural test.
Limitations
The study assumes isotropic linear materials and does not account for non-linear behavior of some components.
Digital Object Identifier (DOI)
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