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The effect of restorative materials on the stress distribution of class V composite resin restorations - a 3D finite element investigation
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Original Article The effect of restorative materials on the stress distribution of class V composite resin restorations - a 3D finite element investigation
Hyoung-Ryoul Ahn, Hyeon-Cheol Kim, Bock Huh, Jeong-Kil Park
Journal of Korean Academy of Conservative Dentistry 2006;31(1):20-29.
DOI: https://doi.org/10.5395/JKACD.2006.31.1.020
Published online: January 31, 2006

Department of Conservative Dentistry, School of Dentistry, Pusan National University, Korea.

Corresponding Author: Jeong-Kil Park. Department of Conservative Dentistry, College of Dentistry, Pusan National University, 1-10, Ami-dong, Seo-gu, Busan, 602-739, Korea. Tel: 82-51-240-7454, jeongkil@pusan.ac.kr
• Received: July 27, 2005   • Revised: October 28, 2005   • Accepted: November 1, 2005

Copyright © 2006 Korean Academy of Conservative Dentistry

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  • 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 45° 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.

  • Keywords: Class V; Von Mises; Finite element analysis; Resin; Stress distribution
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Figure 1
The 3-D finite element mesh model.
jkacd-31-20-g001.jpg
Figure 2
Cavity Design.
jkacd-31-20-g002.jpg
Figure 3
Applied force on the tooth.
jkacd-31-20-g003.jpg
Figure 4
Von Mises stress node number of cavity outline.
jkacd-31-20-g004.jpg
Figure 5
Von Mises stress node number of cavity wall.
jkacd-31-20-g005.jpg
Figure 6
Stress distribution on cavity margins and restorations.
jkacd-31-20-g006.jpg
Figure 7
Stress distribution on cavity margins (before and after restoration).
jkacd-31-20-g007.jpg
Figure 8
Stress distribution on cavity walls.
jkacd-31-20-g008.jpg
Figure 9
Stress distribution on cavity wall (before and after filling).
jkacd-31-20-g009.jpg
Table 1
Mechanical properties of the materials used in the study

aKatona et. al. 24)

bGeramy et. al. 25)

jkacd-31-20-i001.jpg

Tables & Figures

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        The effect of restorative materials on the stress distribution of class V composite resin restorations - a 3D finite element investigation
        J Korean Acad Conserv Dent. 2006;31(1):20-29.   Published online January 31, 2006
        DOI: https://doi.org/10.5395/JKACD.2006.31.1.020
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      The effect of restorative materials on the stress distribution of class V composite resin restorations - a 3D finite element investigation
      Image Image Image Image Image Image Image Image Image
      Figure 1 The 3-D finite element mesh model.
      Figure 2 Cavity Design.
      Figure 3 Applied force on the tooth.
      Figure 4 Von Mises stress node number of cavity outline.
      Figure 5 Von Mises stress node number of cavity wall.
      Figure 6 Stress distribution on cavity margins and restorations.
      Figure 7 Stress distribution on cavity margins (before and after restoration).
      Figure 8 Stress distribution on cavity walls.
      Figure 9 Stress distribution on cavity wall (before and after filling).

      Figure 1

      Figure 2

      Figure 3

      Figure 4

      Figure 5

      Figure 6

      Figure 7

      Figure 8

      Figure 9

      The effect of restorative materials on the stress distribution of class V composite resin restorations - a 3D finite element investigation

      Mechanical properties of the materials used in the study

      aKatona et. al. 24)

      bGeramy et. al. 25)
      Table 1 Mechanical properties of the materials used in the study

      aKatona et. al. 24)

      bGeramy et. al. 25)

      Table 1

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