The influence of the height of core on mandibular complete overdenture based on post-core abutment stress distribution
- VernacularTitle:桩核高度对下颌桩核基牙式全口覆盖义齿应力分布的影响
- Author:
Ying ZHANG
;
Jianhua LI
;
Lekang BAI
;
Yuchun WANG
- Publication Type:Journal Article
- Keywords:
overdenture;
post-core;
3-D finite element;
stress analysis
- From:
Journal of Xi'an Jiaotong University(Medical Sciences)
1981;0(03):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To study the stress distribution of mandibular complete overdenture based on post-core abutment with various height of core and its supporting tissues, and to offer experimental foundation and guidance for clinical work. Methods 3-D FEA models of mandibular complete overdenture were set up based on post-core abutment and its supporting tissues; vertical loading was imposed on denture; the stress values of denture and its supporting tissues were calculated and analyzed, with the height of core as 3 mm, 4 mm, 5 mm and 6 mm, respectively. Results With the height of core increasing, the stress in dentine, parodontal membrane, denture base plate and cortical bone increased, while the stress in mucosality hardly changed. Conclusion Under the premise of retention, the height of core should be decreased as much as possible to maintain the health of the tissues.
