下颌第一磨牙种植体周围应力三维有限元分析
The Study on Three-dimension Finite Element Analysis of the Stress Distribution in the Mandible Bone around Dental Implants
作者：王晓洁,罗教明,陈继镛,张兴栋
Author：WANGXiao-jie, LUO Jiao-ming, CHENJi-yong, ZHANG Xing-dong
收稿日期：2005-04-25 年卷（期）页码：2005,23(02):167-
期刊名称：华西口腔医学杂志
Journal Name：West China Journal of Stomatology
关键字：应力分布,牙种植体,三维有限元分析,下颌骨模型,
Key words：stress distribution,dental implants,three-dimension finite element analysis,mandible model,
基金项目：国家自然科学基金资助项目(30471758)
中文摘要
目的 探讨精确的有限元分析(FEA)模型建立的方法,使FEA分析计算结果更加真实有效。方法 采用
下颌骨计算机断层扫描(CT)数据、通过计算机图像处理及计算机辅助设计(CAD)技术,获取精确的下颌骨第一磨
牙几何模型。应用FEA技术对圆柱状种植体周围骨内应力分布情况进行分析。结果 种植体周围应力分布具有
高度的非对称性,主要集中于下颌骨舌侧颈部,颊侧主要为拉应力作用,舌侧为压应力作用。结论 基于CT数据
建立的模型能更真实地反映下颌骨的结构特点,使FEA分析结果更趋于真实。
英文摘要
Objective The aim of this studywas to investigate howto model an accuracy 3-dimension Finite Element Analysis (3D-FEA) model.Methods Based on computed tomography (CT) scan data of a woman, a 3D finite element model of the first molar on the left was rebuilt by computer imagines process and computer aided design (CAD). Analysis of the stress distribution on a cylinder dental implant and in the bone around itwas conducted.Results The stress distribution showed extremely asymme- try in bucco-lingual section: stress concentrated on the lingual side of the mandible; stress mainlywas tensile in buccal side, and on the contrary compressive in lingual side.Conclusion The resultswere more reliable because this model more really displayed the mandible.
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