Stress analysis of distal-extension removable partial dentures supported by mini implants
- VernacularTitle:细小种植体支持可摘局部义齿修复末端游离缺失的应力分析
- Author:
Qingfeng HUANG
;
Wenzhong JIN
;
Fuqiang ZHANG
;
Wen CUI
;
Dongmei WANG
- Publication Type:Journal Article
- Keywords:
free-end edentulous;
implant-supported removable partial dentures;
finite element analysis
- From:
Journal of Shanghai Jiaotong University(Medical Science)
2009;29(11):1295-1298
- CountryChina
- Language:Chinese
-
Abstract:
Objective To analyse the stress distribution of distal-extension removable partial dentures supported by mini implants. Methods The finite element analysis models of conventional removable partial dentures ( CRPD) and mini implants supported removable partial dentures (ISRPD) were established by modular denture model. The stress distribution of abutments and supporting tissues was compared by finite element analysis software Abaqus 6.5.Results Under vertical loading, the stress of abutment teeth, mucosa of edentulous region and alveolar bone of ISRPD model was lower than that of CRPD model. Under oblique loading, the stress of each part of CRPD model and alveolar bone of ISRPD model significantly increased, while that of abutment teeth and parodontium of ISPRD model decreased. Conclusion The distal-extension removable partial dentures supported by mini implants work well in protecting the abutments and supporting tissues.
