3DSS结合逆向工程技术建立上颌第一磨牙非线性三维有限元模型  

Reconstruction of non-linear three-dimensional finite element analysis models of maxillary first molar by 3DSS and reverse engineering technique

作　　者：曾照斌[1] 段银钟[1] 侯乃先[2] 王瑞[3] 刘岚[4] 陈学鹏[1] 

机构地区：[1]第四军医大学口腔医学院正畸科,陕西西安710033 [2]西北工业大学工程力学系,陕西西安710072 [3]第四军医大学唐都医院医教部,陕西西安710038 [4]武警陕西总队医院口腔科,陕西西安710034

出　　处：《第四军医大学学报》2008年第9期840-842,共3页Journal of the Fourth Military Medical University

摘　　要：目的:建立上颌第一磨牙及其牙周支持组织非线性三维有限元模型.方法:运用3DSS对上颌第一磨牙标准模型进行扫描;运用逆向工程软件Geomagic Studio8生成三维实体模型;有限元软件ANSYS10.0中生成三维有限元模型.结果:建立了包含上颌第一磨牙、牙周膜、硬骨板、松质骨及密质骨的非线性三维有限元模型,共96875个10节点四面体单元,132838个节点.结论:建立的三维有限元模型有很高的几何相似性,并且结构完整,网格质量较好,为进一步的生物力学研究奠定了基础.AIM： To reconstruct the non-linear three-dimensional finite element analysis models of the maxillary first molar and its supporting tissues. METHODS： After the three dimentional sensing system scanning to the standard model of maxillary first molar, a 3-D geometric model was established by Geomagic Studio 8, a reverse engineering software. Three-dimensional finite element analysis model was then built in ANSYS10.0, a three-dimensional finite element analysis software. RESULTS： The non-linear 3-D FEA model of maxillary first molar, periodontal ligament, lamina dura, cancellous bone and cortical bone was reconstructed successfidly, which had 96 875 10-node-tetrahedral elements and 132 838 nodes in total. CONCLUSION： The reconstructed finite element analysis model of maxillary first molar has high geometrical similarity, intact structure and precise mesh. And it provides a foundation for the further study of biomechanics of maxillary first molar.

关 键 词：磨牙 有限元分析 三维扫描仪 逆向工程 

分 类 号：R783.5[医药卫生—口腔医学]