Effect of dentin tubules on the mechanical properties of dentin. Part I: Stress-strain relations and strength criterion |
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Authors: | Huo Bo Zheng Quanshui |
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Institution: | (1) Department of Engineering Mechanics, Tsinghua University, 100084 Beijing, China |
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Abstract: | As known, there is a large number of dentin tubules in dentin. These tubules have varying radii and are shaped into radially
parallel pattern. The anisotropy of microstructure of dentin shows that dentin should be treated as a material of varying
transverse isotropy. In this Part, the elastic stress-strain relations and the quadratic strength criterion are established
in the form of having varying transverse isotropy, in the framework of micromechanics to take into account of the effect of
the microstructures-dentin tubules. Simplified forms for isotropic and homogeneous cases, as well as the corresponding plane
stress form of the stress-strain relations are also given. These theoretical models are very well supported by the experiments
shown later in the continued paper (Part II).
The project supported by the National Natural Science Foundation of China (19525207). |
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Keywords: | dentin dentin tubules anisotropy inhomogeneity stress-strain relations strength criterion |
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