Three-dimensional finite element modeling and stress analysis on different posts and cores for repairing the maxillary central incisors
- VernacularTitle:不同桩核冠修复上颌中切牙的三维有限元模型建立及应力分析
- Author:
Wen-ya WANG
1
;
Bo FU
1
;
Hua LUO
1
;
Feng-lin CUI
1
;
Qian-bing WANG
2
Author Information
1. College of Manufacturing Science and Engineering, Sichuan University
2. West China College of Stomatology, Sichuan University
- Publication Type:Journal Article
- Keywords:
Maxillary central incisor;
Finite element analysis;
Repair;
Post and core
- From:
Journal of Medical Biomechanics
2014;29(1):E025-E030
- CountryChina
- Language:Chinese
-
Abstract:
Objective To establish four finite element models for repairing root canals of the maxillary central incisors, study the influences from different post and core materials as well as root canal rehabilitations on stress distributions of the maxillary central incisors, so as to provide theoretical references for clinical application. Methods Four finite element models of repairing system were established by CBCT scanning, Mimics software, Rapidform.xor3, Solidworks and Ansys Workbench software. The occlusal loads were simulated and Von Mises stresses on the roots were calculated. Results Four precise 3D finite element models for repairing maxillary central incisors were established, including dentin, all ceramic crow, coping crown, post and core, gutta percha point, periodontal ligament, glue and alveolar bone. The analysis found out that different post and core materials as well as glues had different influences on Von Mises stress of the dentins as the greater elastic modulus of the post was, the smaller Von Mises stresses of the dentin would be. The Von Mises stress on the post and core made of cobalt-chromium alloy was 23.15 MPa, which was the smallest. Conclusions Stress distributions on repairing systems of the maxillary central incisors with different post and core materials can be predicted by establishing such different finite element models and provides a basis for the clinical application of maxillary central incisors repair systems.
