The effect of restorative materials on the stress distribution of class V composite resin restorations: a 3D finite element investigation.
10.5395/JKACD.2006.31.1.020
- Author:
Hyoung Ryoul AHN
1
;
Hyeon Cheol KIM
;
Bock HUH
;
Jeong Kil PARK
Author Information
1. Department of Conservative Dentistry, School of Dentistry, Pusan National University, Korea. jeongkil@pusan.ac.kr
- Publication Type:Original Article
- Keywords:
Class V;
Von Mises;
Finite element analysis;
Resin;
Stress distribution
- MeSH:
Axis, Cervical Vertebra;
Bicuspid;
Finite Element Analysis;
Tooth;
Tooth Cervix
- From:Journal of Korean Academy of Conservative Dentistry
2006;31(1):20-29
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
The purpose of this study was to analyze the stress distribution aspect of unrestored and restored combined shape (wedge shape occlusally and saucer shape gingivally) class V cavity, which found frequently in clinical cases. A maxillary second premolar restored with a combined shape class V composite restorations were modeled using the three dimensional finite element method. Static occlusal load of 170 N was applied on lingual incline of buccal cusp at the angle of 45degrees with the longitudinal axis of the tooth. And three dimensional finite element analysis was taken by ANSYS (Version 6.0, Swanson Analysis System Co., Houston, U.S.A) program which represent the stress distribution on unrestored and restored cavity wall and margin. The conclusions were as follows. 1. Compared to the unrestored cavity, Von Mises stress at the cementoenamel junction and line angle of the cavity base were reduced and in restored cavity. 2. Von Mises stress at the occlusal and cervical cavity margin and wall were increased in restored cavity in comparison with the unrestored cavity. 3. In the hybrid and hybrid/flowable composite resin restoration, Von Mises stress at the cementoenamel junction and line angle of the cavity base were reduced more than in the flowable restoration. 4. In the hybrid and hybrid/flowable composite resin restoration, Von Mises stress at the occlusal and cervical cavity margin and wall were increased more than in the flowable restoration.
