Comparison of stress distribution on telescopic denture and clasp-retention denture for bilateral free-ended cases
- VernacularTitle:套筒冠与卡环固位型义齿修复末端游离缺失的应力分布比较
- Author:
Bin WEI
;
Jie CHEN
;
Qingfeng HUANG
;
Wenzhong JIN
;
Fuqiang ZHANG
- Publication Type:Journal Article
- Keywords:
finite element analysis;
telescopic denture;
removable partial denture
- From:
Journal of Shanghai Jiaotong University(Medical Science)
2009;29(11):1288-1290
- CountryChina
- Language:Chinese
-
Abstract:
Objective To establish three dimensional finite element model libraries of telescopic dentures and removable partial dentures by means of model libraries, and compare the characteristics of stress distribution among three prostheses. Methods Normal model libraries were imported and edited, and models of bilateral free-ended cases were established. Based on the model libraries of fixed partial dentures and removable partial dentures, the finite element models of telescopic dentures and removable partial dentures with medial or distal occlusal rest were established using softwares such as DELL Precision Graphics Workstation, UG 5.0, HyperMesh 7.0 and Abaqus 6.5, then finite element stress analysis was performed. Results The stress distribution on abutment root, parodontium, alveolar mucosa and alveolar bone was uniform. The maximum value of stress on the abutment root (6.205 Mpa) was much less than those of two removable partial dentures (18.41 Mpa and 34.49 Mpa). Conclusion For bilateral free-ended cases, the telescopic denture design is uniform in stress distribution with less stress on abutment root, which is healthy to the abutment root and surrounding tissues.
