Effect of dentin tubules on the mechanical properties of dentin Part III: Numerical analysis |
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Authors: | Huo Bo Zheng Quanshui |
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Institution: | (1) Department of Materials Science and Engineering, Tsinghua University, 100084 Beijing, China;(2) Department of Engineering Mechanics, Tsinghua University, 100084 Beijing, China;(3) Institute of Mechanics, Chinese Academy of Science, 100080 Beijing, China |
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Abstract: | Imitating a real tooth and the periodontal supporting tissues, we have established a 2D finite element model and carried out
a numerical analysis based on the inhomogeneous and anisotropic (IA) stress-strain relation and strength model of dentin proposed
in the preceding Parts I and II, and the conventional homogeneous and isotropic (HI) model, respectively. Quite a few cases
of loadings for a non-defected and a defected tooth are considered. The numerical results show that the stress level predicted
by the IA model is remarkably higher than that by the HI model, revealing that the effect of the dentin tubules should be
taken into a serious consideration from the viewpoint of biomechanics.
The project supported by the National Natural Science Foundation of China (19525207, 19891180) and the Tsinghua University
Fundamental Research Foundation (Jc1999033) |
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Keywords: | biomechanics FEM analysis dentin tubules anisotropy and inhomogeneity |
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