关节内接触问题对三维非线性模拟颞下颌关节力的影响

被引:6
作者
胡凯
荣起国
方竞
刘洪臣
机构
[1] 解放军总医院
[2] 北京大学力学与工程科学系
基金
中国博士后科学基金;
关键词
颞下颌关节; 有限元法; 三维非线性模拟; 接触分析; 应力分布;
D O I
暂无
中图分类号
R782.63 [];
学科分类号
摘要
利用Auto CAD软件及螺旋CT扫描技术与有限元应力分析方法相结合 ,在活体基础上建立TMJ三维非线性有限元模型并比较不同接触状态下关节内应力的变化。结果表明 ,TMJ内盘 突之间有接触模型的关节盘和髁突表面应力主要分布在前、内侧 ,其他区域应力相对较小 ,而无接触模型的表面应力主要分布在中后部和内侧 ,且力值较大。摩擦系数在 0 0 .15范围 ,盘 突之间接触应力的分布范围和大小完全相同 ,同时 ,无摩擦接触、刚性接触和弹性接触三种盘 突接触方式下的关节盘和髁突表面应力基本一致。结果提示 ,在三维非线性模拟TMJ力的接触问题中 ,TMJ盘 突之间全部接触关系的关节内应力分布更符合生理。关节内较低的摩擦系数(0 0 .15 )及不同的盘 突接触方式对其应力分布状态无明显影响。TMJ各结构之间的接触模拟可使其力的三维非线性分析更合理。
引用
收藏
页码:424 / 427
页数:4
相关论文
共 9 条
[1]  
Thickness of the soft tissue layers and articular disk in temporomandibular joints with deviations in form. Hansson T,Nordstrom B. Acta Odontologica Scandinavica . 1977
[2]  
A finite element analysis of the human temporomandibular joint. Chen J,Xu Liangfeng. Journal of Biomechanical Engineering Transactions of the ASME . 1994
[3]  
The structure and function of the mandibular joint. Rees LA. Brazilian Dental Journal . 1954
[4]  
Mandibular forces during simulated tooth clenching. Korioth TWP,Hannam AG. Journal of Orofacial Pain . 1994
[5]  
Stress distribution in the TMJ during clenching in patients with vertical discrepancies of the craniofacial complex. Tanne K,Tanaka E,Sakuda M. Journal of Orofacial Pain . 1995
[6]  
Modeling the biomechanics of the mandible: a three-dimensional finite element stu-dy. Hart PT,Hennebel VV,Thongpreda N. Journal of Biomechanics . 1992
[7]  
A three-dimensional finite element model of the mandible including the TMJ and its application to stress analysis in the TMJ during clenching. Tanaka E,Tanne K,Sakuda M. Medical Engineering and Physics . 1994
[8]  
The temporomandibular joint.A morphologic study on a human autopsy material. Oberg T,Carlsson GE,Fajers CM. Acta Odontologica Scandinavica . 1971
[9]  
A study of the control of disc movement within the temporomandibular joint using the finite element technique. DeVocht JW,Goel VK,Zeitler DL et al. Journal of Oral and Maxillofacial Surgery . 1996