Chen J, Xu L
Department of Mechanical Engineering, Purdue University at Indianapolis 56202-5132.
J Biomech Eng. 1994 Nov;116(4):401-7. doi: 10.1115/1.2895790.
A 2-D finite element model of the human temporomandibular joint (TMJ) has been developed to investigate the stresses and reaction forces within the joint during normal sagittal jaw closure. The mechanical parameters analyzed were maximum principal and von Mises stresses in the disk, the contact stresses on the condylar and temporal surfaces, and the condylar reactions. The model bypassed the complexity of estimating muscle forces by using measured joint motion as input. The model was evaluated by several tests. The results demonstrated that the resultant condylar reaction force was directed toward the posterior side of the eminence. The contact stresses along the condylar and temporal surfaces were not evenly distributed. Separations were found at both upper and lower boundaries. High tensile stresses were found at the upper boundaries. High tensile stresses were found at the upper boundary of the middle portion of the disk.
已开发出一种二维人体颞下颌关节（TMJ）有限元模型，以研究正常矢状面闭口过程中关节内的应力和反作用力。分析的力学参数包括盘内的最大主应力和冯·米塞斯应力、髁突和颞面的接触应力以及髁突反作用力。该模型通过将测量的关节运动作为输入，避开了估计肌肉力量的复杂性。该模型通过多项测试进行了评估。结果表明，髁突合力指向隆起的后侧。沿髁突和颞面的接触应力分布不均匀。在上边界和下边界均发现了分离。在上边界发现了高拉伸应力。在盘中部的上边界发现了高拉伸应力。
