Influence of different location of implants on the stress distribution in mandibular implant-supported complete overdenture
- VernacularTitle:种植体植入部位对全下颌种植覆盖义齿应力分布的影响
- Author:
Zheng LIU
;
Yunfen WANG
;
Yanwei ZHAO
- Publication Type:Journal Article
- Keywords:
Implant;
Overdenture;
Finite element method;
Stress
- From:
Journal of Practical Stomatology
1995;0(04):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the stress distribution of mandibular implant-supported complete overdenture and supporting tissue with different location of implants.Methods:By three-dimentional finite element method, the stress distribution in the supporting tissue and overdenture supported by implants located in the interforaminal region or bilateral canines and first molars area was analyzed.Results:The overdenture supported by implants located in the interforaminal region showed poor oblique loading resistance, the peak value of stress in implant-bone interface was 2.4-9.2 times higher than that of vertial loading. Under vertical or oblique loading conditions, there was higher stress concentration in implants and base plates. The overdenture supported by implants located in bilateral canions and first molars area manifested better mechanical characteristic, the peak value of stress in supporting tissue was in the physiological range of bone.Conclusion:The location of implants in molar area can enhance the ability of overdenture to resist oblique loading, reduce the peak value of stress in implant-bone interface.
