Stresses on the cervical column associated with vertical occlusal alteration.
Stresses on the cervical column associated with vertical occlusal alteration.
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与垂直咬合改变相关的颈柱应力。
DOI：
10.1093/ejo/25.2.135
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发表时间：
2003
影响因子：
2.6
通讯作者：
S. Namura
中科院分区：
文献类型：
--
作者：
M. Motoyoshi;Takahisa Shimazaki;Kohei Hosoi;Mizuki Wada;S. Namura
采用三维有限元法计算咀嚼对颈椎（C1-C7）的生物力学影响。为了验证垂直咬合改变对颈柱的生物力学影响，构建了三个有限元模型（FEM），分别显示正常（模型A），陡峭（模型B）和平坦咬合平面（模型C）。三种模型的应力分布呈现出不同的模式，随着咬合平面的变陡，应力向前区扩展。3种模型的颈柱正中矢状面应力分布图显示出不同的模式，模型A和B的应力集中于齿状突，而模型B的C7应力较模型A有降低的趋势。在模型C中，在C5处观察到集中应力，支持垂直咬合改变可以影响颈柱应力分布的假设。
The biomechanical effects on cervical vertebral columns (C1-C7) during mastication were calculated using a three-dimensional (3D) finite element method. To verify the biomechanical influences of vertical occlusal alteration to the cervical column, three finite element models (FEM) showing a normal (model A), a steep (model B), and a flat occlusal plane (model C) were constructed. The occlusal stress distribution showed various patterns for the three models; the stress extended to the anterior area as the occlusal plane became steeper. The plots of the stresses on the mid sagittal section of the cervical columns showed different patterns for the three models; the stress converged at the odontoid process in models A and B, whereas the stresses at C7 in model B tended to decrease compared with model A. Concentrated stress was observed at C5 in model C, supporting the hypothesis that vertical occlusal alteration could influence stress distribution in the cervical columns.