Three-dimensional finite element analysis on the stress distribution of implants with different anti-rotation abutment design
ZHANG Xin-wen
JU Sheng-zun
JIANG Lu-lu
LIU Yuan-mei
YU Tian-hao
YAN Xu
LIN Zeng
DENG Chun-fu
ZHAO Bao-hong
Abstract：Objective To compare the stress distribution and the stress peak of different anti-rotation design of the implant abutment and to provide reference for optimizing the structure design and clinical application of the implant.Methods According and to Korea Dentium system,three-dimensional finite element analysis model of triangle,hexagon and octagon anti-rotation abutments were established by Solidworks.The Von Mises stress distribution and stress peak of implant,superstructures and surrounding bone tissue of three models under vertical loading and 45° inclined loading were analyzed by ANSYS Workbench14.0 finite element analysis software.Results Under the condition of vertical loading,the mechanical stress of implants,connecting screw and surrounding tissues was small.With the increasing angles of abutment,the stress of implants appeared an increasing trend,the stress of connecting screws appeared a decreasing trend and the stress of cortical bone and cancellous bone had little difference.The stress of hexagon and octagon abutment models was better distributed,and the stress peak of hexagon abutment model was smaller.Under the condition of 45° inclined loading,the mechanical stress of each part was greater,the stress of implants and abutments appeared an increasing trend,and with the increasing angles of abutment,the stress of connecting screw appeared a decreasing trend and the stress of cortical bone and cancellous bone had little difference.The results were similar with vertical loadings.Conclusion The triangle and hexagon abutment design may reduce the mechanical stress of implants,abutments and surrounding bone tissue;octagon abutment design may reduce the stress of connecting screws;the stress distribution of hexagon abutments is better.
Keywords：dental implantimplant abutmentabutment designstress analysisfinite element analysis
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 411-416 )