正常人牙尖交错位紧咬牙时颞下颌关节无单元-有限元耦合法二维生物力学分析  

Biomechanical analysis of human temporomandibular joint during clenching with meshless-FE coupling method

作　　者：张建华[1] 殷新民[1] 吴凤鸣[1] 陈国荣[2] 贾程[2] 顾卫平[1] 

机构地区：[1]南京医科大学口腔医学研究所,南京医科大学口腔医学院修复科,南京210029 [2]河海大学工程力学系,南京210000

出　　处：《口腔医学》2007年第2期95-98,共4页Stomatology

基　　金：国家自然科学基金资助项目(30371555)

摘　　要：目的用无单元-有限元耦合法模拟分析正常人牙尖交错位紧咬牙时颞下颌关节生物力学分布特征。方法采用位移加载方式,应用ANSYS8.0对建立的正常颞下颌关节有限元模型进行分析,用自行编制的耦合程序对建立的正常颞下颌关节无单元-有限元耦合模型进行分析,比较两者的应力分析结果。结果有限元模型和耦合模型应力分析结果具有较高的相似性,反映的颞下颌关节应力分布特点基本相同,但耦合模型对关节盘的应力分析更精细。结论无单元-有限元耦合法是一种有效的数值模拟方法,在生物力学研究中有推广应用前景。Objective To investigate the stress distribution in the human temporomandibular joint（TMJ） during clenching and the biomechanical characteristics of the nomml TMJ with the raeshless-FE coupling. Methods By using a displacement of condyle as input, the two-dimensional finite dement model of normal TMJ was analyzed by ANSYS 8.0, and the two-dimensional meshless-FE coupling model was analysed by a self-developed processor. We compared and analyzed the stress results between meshhss-FE coupling methods and finite element method. Results They are obviously in very good agreement. The stress distribution in the articular disc with the meshless-FE coupling method is highly accurate. Conclusion We can reasonably conclude that the present meshless-FE coupling method is an effective tool for TMJ simulation. The meshless-FE coupling method is able to be successfully applied in other fields within biomechanies.

关 键 词：颞下颌关节 生物力学 无单元-有限元耦合法 无单元法 有限元法 

分 类 号：R782.6[医药卫生—口腔医学]