Three-dimensional finite element analysis of prosthesis stress variation
10.3969/j.issn.2095-4344.2013.29.021
- VernacularTitle:三维有限元法分析修复体应力变化的应用及前景*★
- Author:
Liu ZHAN
;
Shujuan XIE
;
Weihong PAN
- Publication Type:Journal Article
- Keywords:
biomaterials;
biomaterial review;
porcelain-fused-to-metal;
prosthesis;
porcelain thickness;
root canal preparation;
filling;
three-dimensional finite element method;
stress analysis;
root canal;
other grants-supported paper
- From:
Chinese Journal of Tissue Engineering Research
2013;(29):5403-5408
- CountryChina
- Language:Chinese
-
Abstract:
BACKGROUND:Based on variational principle and weighting technology of three-dimensional finite element method, human teeth with a complex morphology can be modeled, which helps to understand the stress distribution of dental hard tissue and prosthesis during the dynamic repair process. OBJECTIVE:To comprehensively analyze the three-dimensional finite element studies concerning biomechanics of dental prostheses, focusing on the effects of metal crown, porcelain thickness, root canal preparation and fil ing on the tooth stress. METHODS:A computer-based search of PubMed (1993-04/2012-09), China Academic Journal Network Publishing Database (2001-2008), and VIP (2001-2008) was performed by the first author to retrieve articles concerning the effects of metal crown, porcelain thickness, root canal preparation and fil ing on the tooth stress. The keywords were“porcelain-fused-to-metal, finite element method, stress analysis, root canal”in English and Chinese. Articles with repetitive contents or meta-analysis were ruled out. Then 40 articles were suitable for further analysis.RESULTS AND CONCLUSION:Finite element method has important significance to establish high-fidelity and high-accuracy models in oral medicine, thereby providing effective biomechanical information for the root canal treatment and post-treatment repair. Scholars continue to explore the stress distribution of dental prostheses during chewing. This review summarizes the stress changes of post and core crowns, supporting reference for further research. Three-dimensional finite element method can be used to build nonlinear three-dimensional finite element models with anisotropic biomechanical characteristics, and can gradual yimprove the transition from static analysis to a dynamic analysis, truly achieving accurate simulation of oral biology and dental morphology as wel as chewing function of the teeth.
