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Surface roughness and microleakage of class V composite restorations : Effect of surface sealing
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Original Article Surface roughness and microleakage of class V composite restorations : Effect of surface sealing
Min-Jeong Kim, Mi-Jeong Lee, Mi-Kyung Yu, Soo-Joung Park1, Kwang-Won Lee
Journal of Korean Academy of Conservative Dentistry 2005;30(1):22-30.
DOI: https://doi.org/10.5395/JKACD.2005.30.1.022
Published online: January 31, 2005

Department of Conservative Dentistry, College of Dentistry, Chonbuk National University, Korea.

1Department of Oral Pathology, College of Dentistry, Chonbuk National University, Korea.

Corresponding author: Kwang-Won Lee. Department of Conservative Dentistry, College of Dentistry, Chonbuk National University, Geumam-Dong, Deokjin-Gu, Jeonju, Jeonbuk, 561-712, Korea. Tel: 82-63-250-2119, Fax: 82-63-250-2049, lkw@moak.chonbuk.ac.kr
• Received: July 29, 2004   • Revised: November 9, 2004   • Accepted: December 7, 2004

Copyright © 2005 Korean Academy of Conservative Dentistry

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  • The purpose of this study was to compare the effect of surface sealing materials on microleakage and surface roughness in Class V composite restorations.
    Twenty five standardized Class V cavity preparations were made on the facial surface of human premolars and were randomly assigned to 5 groups. The teeth were restored with Z-250 after applying Single Bond. Following 7 days storage in distilled water at 37℃, the restorations were sealed as following systems : No sealing ; Single Bond Adhesive ; Biscover ; Fortify ; Optiguard. Then, toothbrush abrasion test was conducted using a wear testing machine.
    Surface roughness was measured by means of profilometer before and after toothbrushing and the results were statistically analysed by using a paired t-test and ANOVA. The bonded interfaces and the changes of surface roughness were examined by SEM.
    For microleakage test, specimens were stained in a 2% methylene blue solution, then longitudinally sectioned and analyzed for leakage at occlusal and cervical interfaces using stereomicroscope. The results were statistically analysed by using a Kruskal-Wallis and Mann-Whitney U test.
    Surface roughness was increasing in all groups after toothbrushing, but no statistically significant differences. In SEM observation, surface sealant was partially retained and partially detached in bonded interfaces. Especially, microgap was identified in cervical margins. In microleakage test, there was better seal in the enamel region and a significant difference between groups at occlusal margin. Control group and Single Bond group had significantly better marginal seal at enamel margin than cervical margin.
  • Keywords: Surface sealing; Microleakage; Surface roughness; Toothbrush abrasion test
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Figure 1
Electromechanical wear testing machine.
jkacd-30-22-g001.jpg
Figure 2
SEM images of group 1 after toothbrushing abrasion test (E : Enamel, R : Restorative material, C : Cementum).
jkacd-30-22-g002.jpg
Figure 3
SEM images of group 2 after toothbrushing abrasion test (E : Enamel, R : Restorative material, C : Cementum).
jkacd-30-22-g003.jpg
Figure 4
SEM images of group 3 after toothbrushing abrasion test (E : Enamel, R : Restorative material, C : Cementum, S : Surface sealant).
jkacd-30-22-g004.jpg
Figure 5
SEM images of group 4 after toothbrushing abrasion test (E : Enamel, R : Restorative material, C : Cementum).
jkacd-30-22-g005.jpg
Figure 6
SEM images of group 5 after toothbrushing abrasion test (E : Enamel, R : Restorative material, C : Cementum).
jkacd-30-22-g006.jpg
Table 1
Surface Treatment materials in each groups.
jkacd-30-22-i001.jpg
Table 2
Summary of surface roughness data (mean ± SD, µm, n = 5)
jkacd-30-22-i002.jpg
Table 3
Microleakage Score - Occlusal and cervical margin
jkacd-30-22-i003.jpg

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        Surface roughness and microleakage of class V composite restorations : Effect of surface sealing
        J Korean Acad Conserv Dent. 2005;30(1):22-30.   Published online January 31, 2005
        DOI: https://doi.org/10.5395/JKACD.2005.30.1.022
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      Surface roughness and microleakage of class V composite restorations : Effect of surface sealing
      Image Image Image Image Image Image
      Figure 1 Electromechanical wear testing machine.
      Figure 2 SEM images of group 1 after toothbrushing abrasion test (E : Enamel, R : Restorative material, C : Cementum).
      Figure 3 SEM images of group 2 after toothbrushing abrasion test (E : Enamel, R : Restorative material, C : Cementum).
      Figure 4 SEM images of group 3 after toothbrushing abrasion test (E : Enamel, R : Restorative material, C : Cementum, S : Surface sealant).
      Figure 5 SEM images of group 4 after toothbrushing abrasion test (E : Enamel, R : Restorative material, C : Cementum).
      Figure 6 SEM images of group 5 after toothbrushing abrasion test (E : Enamel, R : Restorative material, C : Cementum).

      Figure 1

      Figure 2

      Figure 3

      Figure 4

      Figure 5

      Figure 6

      Surface roughness and microleakage of class V composite restorations : Effect of surface sealing

      Surface Treatment materials in each groups.

      Summary of surface roughness data (mean ± SD, µm, n = 5)

      Microleakage Score - Occlusal and cervical margin
      Table 1 Surface Treatment materials in each groups.

      Table 2 Summary of surface roughness data (mean ± SD, µm, n = 5)

      Table 3 Microleakage Score - Occlusal and cervical margin

      Table 1

      Table 2

      Table 3

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