The influence of different inclination of cusp on the stress of an implant supported denture
- VernacularTitle:不同牙尖斜度对单个种植义齿应力分布的影响
- Author:
Dongwei HAN
;
Qiaoming LI
- Publication Type:Journal Article
- Keywords:
Cusp;
Finite element analysis;
Biomechanics;
Implant supported dental prosthesis
- From:
Journal of Practical Stomatology
1996;0(02):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective: To analyze the influence of different inclination of cusp on the stress of an implant supported denture. Methods: A spiral CT was used to scan a corpus' head.The model of mandible,teeth and implant was established by ANSYS 6.1 software. The superstructure of the denture had three different inclination of cusp.The stress distribution of the models under loading was analyzed. Results: When bearing non central loading, the maximum equivalent stress (max EQV) of the abutment was situated at the first screw of the abutment.When bearing central loading, the maximum equivalent stress(max EQV) of the abutment was situated at the cervix. Under all loading, the max EQV of the implant was situated at the cervix, the max EQV of mandible was situated at the upper cortical layer around the cervix of the implant. Higher inclination of cusp and non central loading lead to higher stress. Conclusion: The location of the max EQV of the abutment is consistent with the location of the abutment fracture; lower inclination of cusp and flatsurface teeth are benefit to the stress distribution of the implantation.
