Spline高度对种植体-基桩界面应力分布的影响  

Three dimensional finite element analysis of stress distribution of implant-abutment interfaces with different Spline height

作　　者：黄茜[1] 王聪[2] 王少安[3] 王璐[1] 李苏伶[1] 

机构地区：[1]重庆医科大学附属口腔医院修复科,400015 [2]成都市第三人民医院口腔科,610031 [3]四川大学华西口腔医院,成都610041

出　　处：《重庆医学》2010年第10期1217-1218,共2页Chongqing medicine

摘　　要：目的研究连接高度对Spline种植体-基桩界面受力的影响。方法利用三维有限元方法分析比较0.7、1.0、1.2mm高度Spline种植体、基桩及中央螺钉在预负荷、垂直载荷及斜向载荷作用下的应力分布情况。结果中央螺钉的最大应力值位于螺钉头部与螺杆交接处;Spline种植体的最大应力值位于突起根部;1.0 mm高度的种植体、基桩应力值最小,而中央螺钉应力值最大。结论 1.0 mm高度是Spline种植体系最为合理的连接高度。Objective To investigate the effect of spline height on stress distribution of the implant-abutmteent joint.Methods Three-dimensional finite element analysis was used to determine stress distribution of the implant,abutment and screw of different spline height under preload,vertical load,and oblique load.Results Maximum Von Mises stress of screw located at the joint of the screw head and the screw shank.Maximum Von Mises stress of the Spline implant located at the root of the Spline projections.The system with 1.0 mm spline height had lower stress on implant and abutment,but higher stress on screw.Conclusion Spline height of 1.0 mm is preferred in spline implant system.

关 键 词：种植体 应力分析 三维有限元 

分 类 号：R783.12[医药卫生—口腔医学]