A three-dimensional finite element analysis of stress distribution in peri-implant bone with All-on-4 im-plant with various parameters
10.3969/j.issn.1001-3733.2014.02.010
- VernacularTitle:All-on-4种植体参数对周围骨应力影响的三维有限元分析
- Author:
Yuting WANG
;
Shaofeng ZHANG
;
Yan DONG
;
Weiguo WANG
;
Jipeng LIU
;
Jiawen GUO
- Publication Type:Journal Article
- Keywords:
All-on-4;
Stress;
Finite element analysis
- From:
Journal of Practical Stomatology
2014;(2):193-197
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the stress distribution in peri-implant bone with All-on-4 implant with various parameters by three-dimensional finite element method.Methods:An edentulous mandibular specimen was scanned by CT Mimcs.Geomagic,Uni-graphics,HyperMesh modeling software were used to establish All-on-4 implant finite element models with different inclination angles and corresponding cantilever lengths.1 50 N vertical static load was applied at the right end of the cantilever,peri-implant bone stress was analysed using Abaqus software.Results:When the distal implant inclined 0°with cantilever length of 1 9.5 mm,the peak stress in peri-implant cortical bone at the mesial and distal side was 25.526 MPa and 83.026 MPa respectively.When the distal implant in-clined 1 5°,30°and 45°with the cantilever length of 1 7.2 mm,1 3.3 mm and 9.8 mm,the stress in perio-implant cortical bone at distal side of the implant reduced by 1 2.4%,35.6% and 53.1 %,that at mesial side of the implant reduced by 1 3.6%,36.3% and 40.2%,respectively.Conclusion:From the perspective of the stress analysis,the design of All-on-4 distal implant with large incli-nation angle and short cantilever is superior to that with small inclination angle and long cantilever.
