三维有限元分析过盈配合对种植体骨界面应力分布的影响  

3D-Finite Element Method Analysis of Influence of Interference Fit on Bone-implant Surface Stress Distribution

作　　者：杜燚[1] 叶平[1] 吴润发[1] 

机构地区：[1]南昌大学附属口腔医院种植中心,330006

出　　处：《中国口腔种植学杂志》2008年第1期22-24,31,共4页Chinese Journal of Oral Implantology

摘　　要：目的:分析过盈配合对种植体骨界面应力的影响。方法:分别建立不同过盈量(0.1mm、0.2mm、0.3mm)、不同种植体直径(3.3mm、4.0mm、5.0mm、6.0mm)及不同皮质骨厚度(0.5mm、1.0mm1.5mm、2.0mm、3.0mm)的有限元模型,用有限元法对过盈配合下种植体骨界面初始应力的大小和分布进行分析。结果:过盈配合下种植体骨界面初始应力随着过盈量及皮质骨厚度增大而增大,随着种植体直径的增大而减小。结论:过盈配合中过盈量、种植体直径及骨皮质厚度对种植体骨界面的初始应力影响不同,在种植设计时应综合考虑相关因素的影响。Objective：To analyze influence of interference fit on bone-implant surface stress. Methods： Create different finite element models with differentinterference （0.1 mm,0.2 mm,0.3 mm） ,different implant diameter （3.3 mm,4.0 mm,5.0 mm,6.0 ram） and different thicknes of the cortical bone （0.5 mm,l.0 mml.5 mm,2.0 ram,3.0 mm）,using Three- Dimensional Finite Element Method to analyze the size and distribution of initial stress of bone-implant surface. Results： The size o stress increase as interference and diameter of the implant inrease,the size o stress decrease as cortical bone thicknes decrease. Conclusion：Interference diameter of the implant and cortical bone thicknes have differen influence of interference fit on bone-implant surface stress, related factorsshoud be considered in the design of planting.

关 键 词：三维有限元 过盈配合 牙种植体 

分 类 号：R783[医药卫生—口腔医学]