Three-dimensional finite element analysis of severe wedge-shaped defective premolar restored with fiber post and composite resin
10.3969/j.issn.2095-4344.2014.30.004
- VernacularTitle:纤维桩复合树脂修复重度楔状缺损前磨牙的三维有限元分析
- Author:
Qingyi SHEN
;
Dongmei WANG
;
Qun ZHONG
;
Dong CHEN
- Publication Type:Journal Article
- Keywords:
finite element analysis;
bicuspid;
dental stress analysis;
tooth cervix
- From:
Chinese Journal of Tissue Engineering Research
2014;(30):4777-4782
- CountryChina
- Language:Chinese
-
Abstract:
BACKGROUND:Someone regards that treatments such as root canal therapy and post-core restoration can increase the fracture probability of teeth. Can fiber reinforced composite post enhance the fracture resistance of the severe wedge-shaped defected premolar? Three-dimensional finite element can simplify complex dental systems into a model analyzed by computer, and conduct biomechanical research through the model analysis. OBJECTIVE:To analyze the stress distribution of sever wedge-shaped defected first premolar which restored by fiber reinforced composite post and composite resin. METHODS:We established the three-dimensional finite element models of severe wedge-shaped defected maxil ary first premolar before and after restoration with fiber reinforced composite post and composite resin. The maximum bite force was designed to 267 N that was applied at 45° angle. Then, we analyzed the distribution of maximum principal stress in finite element models. RESULTS AND CONCLUSION:The maximum principal stress was concentrated in the tip of defected region. After restoration, the distribution of maximum principal stress was similar to that of the normal premolar, and the tensile stress was distributed uniformly in the upper-central part of buccal root. It may be beneficial for improving fracture resistance ability of severe wedge-shaped-defect premolar by restoration with fiber reinforced composite post and composite resin.
