The three-dimension finite element analysis on stress of different length post of posterior tooth on post-core crown
- VernacularTitle:不同桩长对后牙核桩冠牙本质应力的三维有元分析
- Author:
Gang FU
- Publication Type:Journal Article
- Keywords:
Three-dimension finite element;
Stress;
Post-core crown
- From:
Journal of Chongqing Medical University
1986;0(04):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective: To compare influence of residual dentin stress on condition of different post length of posterior teeth post-core,to discover reasonable post length of posterior teeth post-core,in order to instruct clinic rational design.Methods:Models were created by abrasive method and way which pictures were acqiured with digital camera.To generate three-dimensional models of maxillary firster molar which is short in medial palatal cusp restored with post-core crown.Then analyse magnitude and distribution of model residual dentin stress by the three-dimension finite element analysis.Result:When maxillary firster molar which is short in medial palatal cusp restored with middle fusion metal post-core and porcelain fused mental crown,on condition of 1/2 post length and2/3 post lengths,it has the same magnitude of Von mises stress? most main stress ? least main stress and the same stress distribution on residual dentin.Conclusion:When maxillary firster molar which is short in medial palatal cusp restored with middle fusion metal post-core and porcelain fused mental crown,on condition of 1/2 post length and2/3 post lengths,it has no infulence in magnitude and distribution of stress of residual dentin.
