| 近中移动下颌第二恒磨牙的三维有限元分析 |
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| 引用本文： | 王海燕 邵玶 王秀芳 付德龙. 近中移动下颌第二恒磨牙的三维有限元分析[J]. 哈尔滨医科大学学报, 2005, 39(5): 449-451 |
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| 作者姓名： | 王海燕 邵玶 王秀芳 付德龙 |
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| 作者单位： | [1]哈尔滨医科大学口腔医学院口腔正畸科,黑龙江哈尔滨150001 [2]鸡西市妇幼保健院口腔科,鸡西158100 [3]哈尔滨工业大学航天科学与力气系固体力学专业,黑龙江哈尔滨150001 |
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| 摘 要： | 目的 了解下颌第二恒磨牙不同载荷下近中移动时的位移及应力分布情况。方法 在建立的下颌第二恒磨牙及其牙周组织的三维有限元模型牙体部分，相当于颊面管的部位模拟加力，以及模拟颊舌侧同时加力的情况，计算和分析牙体各个部位的应力分布情况。结果 牙体平行移动时（M/F为8 ：1），其应力分布比较均匀。在加力点处，牙体颈缘处及根分叉区应力比较集中。根尖部位没有高应力集中。结论 下颌第二恒磨牙近中移动时，颊舌侧同时加力并且施加适当的近远中向的力矩，有利于牙齿的整体平行移动。
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| 关 键 词： | 下颌第二恒磨牙 应力分析 有限元法 应力分布 |
| 文章编号： | 1000-1905（2005）05-0449-03 |
| 收稿时间： | 2005-05-12 |
| 修稿时间： | 2005-05-12 |
Three-dimensional finite element analysis of mandibular second molar moved mesially |
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| WANG Hai-yan, SHAO Ping, WANG Xiu-fang, et al. Three-dimensional finite element analysis of mandibular second molar moved mesially[J]. Journal of Harbin Medical University, 2005, 39(5): 449-451 |
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| Authors: | WANG Hai-yan SHAO Ping WANG Xiu-fang et al |
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| Affiliation: | The Stomatological Hospital, Harbin Medical University, Harbin 150001, China |
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| Abstract: | Objective To investigate the displacements and the stress distributions of a mandibular second molar. Methods A three-dimensional finite element model of a mandibular second molar was developed. The displacements and the stress distributions of the molar were analyzed. Results They brought the results of the uniform stresses in the molar and controlled the translatory movement. There were stress concentrations in the cervix and the apex of the root and the forcing point. Conclusion When M/F is about 8 and two equal forces axe added on both buccal and palatal sides, there are the uniform stress in the molar and controlled translatory movement. |
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| Keywords: | a mandibular second molar stress analysis finite element method stress distribution |
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