Nonlinear finite element analysis of three implant- abutment interface designs

The objective of this study was to investigate the mechanical characteristics of implant-abutment interface design in a dental implant system, using nonlinear finite element analysis （FEA） method. This finite element simulation study was applied on three commonly used commercial dental implant syste...

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Bibliographic Details
Published in:International journal of oral science 2012-06, Vol.4 (2), p.101-108
Main Authors: Tang, Chun-Bo, Liul, Si-Yu, Zhou, Guo-Xing, Yu, Jin-Hua, Zhang, Guang-Dong, Bao, Yi-Dong, Wang, Qiu-Ju
Format: Article
Language:English
Subjects:
Computer Simulation
Computer-Aided Design
Dental Implant-Abutment Design - statistics & numerical data
Dental Prosthesis Design
Dental Stress Analysis - methods
Dentistry
Finite Element Analysis
Humans
Mises应力
Original
Stress, Mechanical
十六进制
基台
接口设计
有限元模拟
植入物
种植体
非线性有限元分析
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Summary:The objective of this study was to investigate the mechanical characteristics of implant-abutment interface design in a dental implant system, using nonlinear finite element analysis （FEA） method. This finite element simulation study was applied on three commonly used commercial dental implant systems： model I, the reduced-diameter 3i implant system （West Palm Beach, FL, USA） with a hex and a 12-point double internal hexagonal connection; model II, the Semados implant system （Bego, Bremen, Germany） with combination of a conical （45° taper） and internal hexagonal connection; and model III, the Br,~nemark implant system （Nobel Biocare, Gothenburg, Sweden） with external hexagonal connection. In simulation, a force of 170 N with 45°oblique to the longitudinal axis of the implant was loaded to the top surface of the abutment. It has been found from the strength and stiffness analysis that the 3i implant system has the lowest maximum yon Mises stress, prirlcipal stress and displacement, while the Br~nemark implant system has the highest. It was concluded from our preliminary study using nonlinear FEA that the reduced-diameter 3i implant system with a hex and a 12-point double internal hexagonal connection had a better stress distribution, and produced a smaller displacement than the other two implant systems.
ISSN:1674-2818
2049-3169
DOI:10.1038/ijos.2012.35