种植牙组件材料力学参数对骨组织接触应力的影响  

Effects of Material Mechanical Parameters of Dental Implant Components on Bone-implant Stress Distributions and Its Optimization

作　　者：李洪友[1] 石茂林[1] 彭云峰[2] 

机构地区：[1]华侨大学机电及自动化学院,福建厦门361021 [2]厦门大学物理与机电工程学院,福建厦门361005

出　　处：《厦门大学学报（自然科学版）》2015年第3期409-415,共7页Journal of Xiamen University：Natural Science

基　　金：福建省自然科学基金(2012J01213)

摘　　要：为了分析种植牙组件材料力学参数对骨组织接触应力(下文简称骨应力)的影响,采用Pro/E三维构图软件建立模型,Ansys Workbench 14.5软件进行网格划分,设定材料属性、约束和加载条件,完成钛种植牙骨应力分布分析.结果表明,骨应力随种植体弹性模量、基台弹性模量、基台泊松比增大而增大;随种植体泊松比增大而减小.种植体弹性模量影响最大,其次为基台弹性模量及种植体泊松比.种植牙体系采用具有适宜材料力学参数的基台和种植体组合,能够有效地降低骨应力.皮质骨区域与松质骨中段区域为骨应力集中区.种植体内部锥面与螺纹面过渡面对应松质骨区域为种植体失效潜在危险部位.The effect of the mechanical parameters of implant components on bone-implant stress distributions is analyzed.A threedimensional model is established by using software Pro/E.Then the stress on the titanium bone-implant interface was analyzed after meshing the model,defining attributes and conditions,as well as loading by Ansys Workbench 14.5.Results show that,with the elastic modulus of implants,the Poisson′s ratio of implants and the elastic modulus of abutments increasing,the bone-implant stress is increased;whereas with the Poisson′s ratio of abutments increasing,the bone-implant stress is decreased.The most significant factor is the elastic modulus of implant followed by the elastic modulus of abutment and the Poisson′s ratio of implant.A better combination of implants and abutments can reduce bone-implant stress distribution effectively.The cancellous bone area corresponding to the transition area between thread surface and conical surface is potentially the dangerous site,which causes implant failures.

关 键 词：种植牙 弹性模量 泊松比 骨应力 

分 类 号：R783.1[医药卫生—口腔医学]