探讨人颞下颌关节三维有限元的实体建模方法  

The investigation of modeling three-dimensional finite element solid of human temporomandibular joint

作　　者：胡凯[1] 刘洪臣[1] 方竞[2] 荣起国[2] 叶惠义[3] 

机构地区：[1]解放军总医院口腔科,北京100853 [2]北京大学力学与工程科学系,北京100871 [3]解放军总医院放射科,北京100853

出　　处：《口腔颌面修复学杂志》2000年第1期26-28,共3页Chinese Journal of Prosthodontics

基　　金：国家自然科学基金资助项目 批准号:39900165

摘　　要：目的:探讨由活体直接获得人颞下颌关节(包括下颌骨,关节盘及关节结节)的三维影像以建立其三维有限元实体模型的方法。材料与方法:利用Auto-CAD软件及螺旋CT扫描技术与三维有限元分析方法相结合,将CT扫描图像转换为可用于有限元实体建模的数字图像。结果:三维有限元实体模型与螺旋CT三维重建影像比较,几何相似性与还原性良好,材料构造合理,并由此建立了理想的人颞下颌关节三维有限元模型。结论:在临床实践中,借助于螺旋CT扫描及Auto-CAD软件在活体建立人颞下颌关节三维有限元模型是切实可行的,结果是满意的。To obtain three-dimensional (3-D) image of human temporomandibular joint (TMJ ) including the mandible, disc and articular tubercle directly from in vivo in order to develop its 3-D finite element model. Materials and Methods: Combining spiral CT scanning technology with 3-D finite element method, together with Auto-CAD software, the CT tomographic scanning image of TMJ was changed to the numerical image used to finite element solid modeling. Results: Compared with 3-D image reconstructed by spiral CT, geometric similarity and shape restoration of 3-D finite element solid model were good. Its material structure was reasonable, also. So, an ideal 3-D finite element model of human TMJ was constructed. Conclusion: The method to develop 3-D finite element model of human TMJ in vivo by spiral CT scanning and Auto-CAD technology was feasible in clinical practice, and the results were satisfying.

关 键 词：人颞下颌关节 三维有限元 螺旋CT扫描 Auto-CAD软件 

分 类 号：R782[医药卫生—口腔医学]