Mostrar el registro sencillo del ítem
Interpreting finite element results for brittle materials in endodontic restorations
dc.contributor.author | Pérez-González, Antonio | |
dc.contributor.author | Iserte-Vilar, Jose L. | |
dc.contributor.author | González-Lluch, Carmen | |
dc.date.accessioned | 2012-06-06T21:28:33Z | |
dc.date.available | 2012-06-06T21:28:33Z | |
dc.date.issued | 2011-06-02 | |
dc.identifier.citation | Biomedical engineering online (2 June 2011), vol. 10:44, 1-16 | ca_CA |
dc.identifier.issn | 1475-925X | |
dc.identifier.uri | http://hdl.handle.net/10234/41180 | |
dc.description.abstract | Background: Finite element simulation has been used in last years for analysing the biomechanical performance of post-core restorations in endodontics, but results of these simulations have been interpreted in most of the works using von Mises stress criterion. However, the validity of this failure criterion for brittle materials, which are present in these restorations, is questionable. The objective of the paper is to analyse how finite element results for brittle materials of endodontic restorations should be interpreted to obtain correct conclusions about the possible failure in the restoration. Methods: Different failure criteria (Von Mises, Rankine, Coulomb-Mohr, Modified Mohr and Christensen) and material strength data (diametral tensile strength and flexural strength) were considered in the study. Three finite element models (FEM) were developed to simulate an endodontic restoration and two typical material tests: diametral tensile test and flexural test. Results: Results showed that the Christensen criterion predicts similar results as the Von Mises criterion for ductile components, while it predicts similar results to all other criteria for brittle components. The different criteria predict different failure points for the diametral tensile test, all of them under multi-axial stress states. All criteria except Von Mises predict failure for flexural test at the same point of the specimen, with this point under uniaxial tensile stress. Conclusions: From the results it is concluded that the Christensen criterion is recommended for FEM result interpretation in endodontic restorations and that the flexural test is recommended to estimate tensile strength instead of the diametral tensile test | ca_CA |
dc.format.extent | 16 p. | ca_CA |
dc.format.mimetype | application/pdf | ca_CA |
dc.language.iso | eng | ca_CA |
dc.publisher | BioMed Central | ca_CA |
dc.rights | © 2011 Pérez-González et al; licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited | ca_CA |
dc.rights.uri | http://creativecommons.org/licenses/by-sa/4.0/ | |
dc.subject | Finite element | ca_CA |
dc.subject | Simulation | ca_CA |
dc.subject | Endodontic restorations | ca_CA |
dc.subject | Christensen criterion | ca_CA |
dc.title | Interpreting finite element results for brittle materials in endodontic restorations | ca_CA |
dc.type | info:eu-repo/semantics/article | ca_CA |
dc.identifier.doi | http://dx.doi.org/10.1186/1475-925X-10-44 | |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | ca_CA |
dc.relation.publisherVersion | http://www.biomedical-engineering-online.com/content/10/1/44 | ca_CA |
Ficheros en el ítem
Este ítem aparece en la(s) siguiente(s) colección(ones)
-
EMC_Articles [807]
Excepto si se señala otra cosa, la licencia del ítem se describe como: © 2011 Pérez-González et al; licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited