弹性模量和初始应力对种植体骨界面应力分布影响的三维有限元分析

目的:分析种植体弹性模量与骨界面应力分布的关系。方法:用三维有限元的方法对不同弹性模量种植体在各种载荷下骨界面的应力大小和分布进行分析。结果:种植体周围界面骨组织应力强度随着材料弹性模量的增大而增大。结论:低弹性模量的钛合金材料作为种植材料时具有更好的生物力学相容性。初始应力在分析种植体骨界面应力分布时必须加以考虑。

Three-Dimensional Finite Element Method Analysis of Relation of Implant Elastic Modulus and Initial stress and Bone-implant Surface Stress Distribution

Object:To analyze Relation of Elastic Modulus and Bone-implant Surface Stress Distribution. Methods:By using Three-Dimensional Finite Element Method to analyze stress of around screw implant of different elastic modulus and different load. Results:The smaller the elastic modulus,the less the magnitude of stress distribution on the condition that pattern of dynamic and static loading direction were axial. Conclusion:The lower elastic modulus Titanium alloys is more feasible biomechanical compatibility for implant materials,Initial stress is an important element of inflnence stress distribntion.