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Analytical and numerical analysis of human dental occlusal contact

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10.1080/10255842.2011.627328
 
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hdl:2117/20045

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Bastos de Souza, FLAVIA
Casas, Estevam
Oller Martínez, Sergio HoracioMés informacióMés informació
Document typeArticle
Defense date2013
PublisherGordon and Breach Science Publishers
Rights accessRestricted access - publisher's policy
All rights reserved. This work is protected by the corresponding intellectual and industrial property rights. Without prejudice to any existing legal exemptions, reproduction, distribution, public communication or transformation of this work are prohibited without permission of the copyright holder
Abstract
The knowledge of contact forces in teeth surfaces during mastication or para-functional movements can help to understand processes related to friction and wear of human dental enamel. The development of a numerical model for analysis of the occlusal contact between two antagonistic teeth is proposed, which includes three basic steps: the characterisation of the surface roughness, its homogenisation using an assumed distribution function and the numerical determination of the resulting forces. Finite element strain results for the main different asperities are statistically combined, deriving the predicted macroscopic behaviour of the interface. Axisymmetric and 3D numerical models with an elasto-plastic constitutive law are used to simulate micro-indentations and micro-contacts, respectively. The contact is allowed to occur locally in planes not necessarily parallel to the surface's mean plane, a problem for which there is no analytical solution. The three identified parameters, homogenised surface hardness (3.68 GPa), surface yield stress (3.08 GPa) and static friction coefficient (0.23), agree with the experimental values reported in the literature.
CitationBastos de Souza, F.; Casas, E.; Oller, S. Analytical and numerical analysis of human dental occlusal contact. "Computer methods in biomechanics and biomedical engineering", 2013, vol. 16, núm. 5, p. 495-503. 
URIhttp://hdl.handle.net/2117/20045
DOI10.1080/10255842.2011.627328
ISSN1025-5842
Publisher versionhttp://www.tandfonline.com/doi/abs/10.1080/10255842.2011.627328
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  • (MC)2 - Grup de Mecànica Computacional en Medis Continus - Articles de revista [191]
  • Departament de Resistència dels Materials i Estructures en Enginyeria (fins octubre 2015) - Articles de revista [286]
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