颞下颌关节三维建模和生物力学分析

The research project achieved the fusion of the cranio-jaw-facial CT and MR image and obtained the three-dimensional images of the temporomandibular joint (TMJ) in order to determine the mastication muscle vector logically. The material properties of various structures of the TMJ were measured by the mechanical experiment, then the TMJ three-dimensional non-liner finite element model was constructed in vivo in a more closed physiological way and the numerical simulative method of an effective TMJ stress and strain analysis was formed so that the TMJ biological action in various occlusions can be understood completely and truly.

本项目通过实验确定人颞下颌关节材料的粘弹性本构关系，由图象处理技术获得咀嚼肌的三维力向量，建立考虑几何非线性和材料非线性特征的颞下颌关节力学模型，探讨数值模拟颞下颌关节受力状况的全速可行方法和建模体系，从而能够无创、真实地获得颞下颌关节应力应变分布特征，为颞下颌关节疾病、创伤及其治疗提供重要的生物力学评估和分析依据。