成人颅面复合体三维有限元模型的建立  

Construction of three-dimensional finite element model of adult craniofacial complex

作　　者：杜娟[1] 胡芳[2] 王林[2] 倪晓宇[3] 

机构地区：[1]南京医科大学附属淮安市第一人民医院口腔科,江苏淮安223300 [2]南京医科大学附属口腔医院正畸科,江苏南京210029 [3]南京林业大学机械工程系,江苏南京210037

出　　处：《口腔医学》2014年第5期334-338,共5页Stomatology

基　　金：国家自然科学基金面上项目(30973361)

摘　　要：目的建立成人颅面复合体三维有限元模型,为进一步研究腭部种植支抗进行上颌扩大的可行性及其与牙支抗的对比研究建立数学模型基础。方法采用螺旋CT断层扫描成年人颅面复合体,计算机图像处理和转录技术,自编程序和ANSYS软件相结合建立颅面复合体的三维有限元模型。结果建立了具有良好几何相似性和生物力学相似性的颅面复合体三维有限元模型。结论模型精确地重建了骨密质和骨松质成分,适合用于上颌快速扩大术(RME)的生物力学分析。Objective To construct a three-dimensional finite clement model of adult craniofacial complex for the further investigation of the feasibility of palatal implant anchorage for RME in adults and the comparative study between the tooth-borne RME and the bone-borne one. Methods Spiral CT was used to scan adult craniofacial complex,and the computer image processing and transcription technique and ANSYS were employed to establish the three dimensional finite element model. Results A three dimensional finite element model was successfully constructed,which had great geometrical characters and biomechanical similarity. Conclusions This model precisely reconstructed cortical and cancellous bone as what they really are,which is suitable for biomechanical analysis of RME.

关 键 词：螺旋CT 颅面复合体 三维有限元模型 上颌快速扩大 

分 类 号：R783.5[医药卫生—口腔医学]