Stress analysis of fiber posts combined with auxiliary posts in restored anterior tooth with flared canals
10.3969/j.issn.1671-8348.2015.35.010
- VernacularTitle:纤维桩联合辅桩修复前牙薄弱根管的应力分析
- Author:
Pin WANG
;
Yue HUANG
;
Min LIU
- Publication Type:Journal Article
- Keywords:
post and core;
fiber post;
teeth with flared canals;
three dimensional finite element
- From:
Chongqing Medicine
2015;(35):4929-4931,4935
- CountryChina
- Language:Chinese
-
Abstract:
Objective To assess the stresses of fiber posts combined with auxiliary posts in anterior teeth with flared canals by three dimensional finite element method .Methods Nine 3D models of maxillary first incisors with flared canals restored by two post systems(porcelain pile ,fiber and auxiliary pile) divided into 5 groups were generated .By static loading method ,dental crowns cut 1/3 and middle 1/3 connection link five points into 135 angles by 100 N force loading .The major stress for the dentin and the e‐quivalent Von Mises stress for resin cement and post and core were calculated .Results Biggest tooth stress value of 111 .9 Mpa and the largest resin adhesive stress value 54 .6 Mpa had appeared in the use of a model of the quartz fiber post after repair ,ceramics pile repair model of pile nuclear stress value and the maximum was 48 .1 Mpa .Combining with one auxiliary post ,stress values re‐duced significantly in dentin ,in cement and in post and core .However ,as more auxiliary posts were added ,the stresses did not de‐crease sequentially .Conclusion It is suggested that to restore the tooth with flared canals by quartz fiber post combining with one auxiliary post .
