Stress Analysis and Optimization of Structural Parameters for Incisal Dental Implants under Impact Loads
10.16156/j.1004-7220.2025.01.029
- VernacularTitle:冲击载荷下切牙种植体应力分析及结构参数优化
- Author:
Tianxu LI
1
;
Jinghu YU
;
Fangyong ZHU
;
Yumin YANG
;
Qiwen DING
;
Shanhua QIAN
Author Information
1. 江南大学机械工程学院,江苏无锡 214122;江苏省食品先进制造装备技术重点实验室,江苏无锡 214122
- Publication Type:Journal Article
- Keywords:
impact load;
maxillary central incisors;
implant;
abutment angle;
orthogonal experiments;
finite element analysis
- From:
Journal of Medical Biomechanics
2025;40(1):216-222
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the effects of implant length,diameter,and abutment angle on bone stress distributions around maxillary central incisors,and determine the optimal parameter combination.Methods A three-dimensional(3D)model of the maxilla was reconstructed based on CBCT data.Using an orthogonal table,a total of 16 dental implant 3D models were established,varying in length,diameter,and abutment angle.These models were assembled with the maxillary and rigid-body models.Finite element analysis was performed using the transient dynamics module of ANSYS.Orthogonal experiments and one-way analysis of variance(ANOVA)were conducted on the obtained stress data.Results The implant diameter showed a statistically significant effect on the maximum von Mises stress in cortical bone(P=0.010),while implant length(P=0.229)and abutment angle(P=0.844)did not demonstrate a statistical significance.The optimal parameter combination for cortical bone stress was 5.0 mm implant diameter,12 mm implant length,and 0° abutment angle.In cancellous bone,implant length(P=0.001),diameter(P=0.011),and abutment angle(P=0.013)all had statistically significant effects on the maximum von Mises stress.The optimal parameter combination for cancellous bone stress was 14 mm implant length,5.0 mm implant diameter,and 5° abutment angle.Conclusions Implant diameter significantly affects the stress of both cortical and cancellous bone.Clinically,a larger diameter should be preferred to reduce the stress peak.Implant length is the next most important factor,while abutment angle has the least effect.
