Tajima Kiyoshi, Chen Ker-Kong, Takahashi Nobusuke, Noda Naoaki, Nagamatsu Yuki, Kakigawa Hiroshi
Division of Biomaterials, Kyushu Dental College, 2-6-1 Manazuru, Kokurakita, Kitakyushu 803-8580, Japan.
Dent Mater J. 2009 Mar;28(2):219-26. doi: 10.4012/dmj.28.219.
The aim of this study was to develop a three-dimensional (3D) finite element (FE) model of a sound extracted human second premolar from micro-CT data using commercially available software tools. A detailed 3D FE model of the tooth could be constructed and was experimentally validated by comparing strains calculated in the FE model with strain gauge measurement of the tooth under loading. The regression coefficient and its standard error in the regression analysis between strains calculated by the FE model and measured with strain gauge measurement were 0.82 and 0.06, respectively, and the correlation coefficient was found to be highly significant. These results suggested that an FE model reconstructed from micro-CT data could be used as a valid model to estimate the actual strains with acceptable accuracy.
本研究的目的是使用商用软件工具，根据显微CT数据建立一个完好无损的人类第二前磨牙的三维（3D）有限元（FE）模型。可以构建牙齿的详细3D FE模型，并通过将FE模型中计算出的应变与加载状态下牙齿的应变片测量值进行比较，对该模型进行实验验证。FE模型计算出的应变与应变片测量值之间的回归分析中，回归系数及其标准误差分别为0.82和0.06，且发现相关系数具有高度显著性。这些结果表明，根据显微CT数据重建的FE模型可以作为一个有效的模型，以可接受的精度估计实际应变。
