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Effect of resin sealants on the reduction of microleakage in composite restorations


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Effect of resin sealants on the reduction of microleakage in composite restorations

Article information

Restor Dent Endod. 2006;31(4):282-289
Publication date (electronic) : 2006 July 31
doi : https://doi.org/10.5395/JKACD.2006.31.4.282
Young-Gon Cho, Mun-Hong Kim, Myung-Goo Lee
Department of Conservative Dentistry, College of Dentistry, Chosun University, Korea.
Corresponding Author: Young-Gon Cho. Department of Conservative Dentistry, College of Dentistry, Chosun University, 421 Seosuk-dong, Dong-gu, Gwangju, Korea, 501-825. Tel: +82-62-220-3840, 3845 Fax: +82-62-232-9064, ygcho@mail.chosun.ac.kr
Received 2006 March 21; Revised 2006 April 10; Accepted 2006 April 17.

Abstract

The purpose of this study was to compare the ability of three resin surface sealants to prevent microleakage in Class V composite resin restorations. Forty Class V cavities with the occlusal margin in enamel and gingival margin in dentin were prepared on the buccal surfaces of sound extracted molars, and restored with composite resin. Restorations were randomly assigned into one of four equal groups (n = 10): a control group, without resin sealing, and three experimental groups in which margins were sealed with Fortify Plus, Biscover and Permaseal, respectively. Specimens were thermocycled, immersed in a 2% methylene blue solution for 4 hours, sectioned longitudinally, and observed the leakage at the occlusal and gingival margins. The result was analyzed using Kruskal-Wallis test, Mann-Whitney test and Wilcoxon signed rank test.

In conclusion, the ability to reduce microleakage at occlusal margins was similar in all of three sealants. However at gingival margin, it depended on the type of used resin surface sealant. At gingival margin, control and Fortify Plus group showed statistically higher microleakage than PermaSeal group, and Fortify Plus group also showed higher microleakage than BisCover group (p < 0.05).

Keywords: Resin surface sealants; Microleakage; Composite resin restorations; Class V cavities; Occlusal margins; Gingival margin

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Article information Continued

Copyright © 2006 Korean Academy of Conservative Dentistry
(open-access) :

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Table 1

Group classification by types of resin sealants

Table 1

Table 2

Distribution of microleakage scores and mean rank at occlusal margins

Table 2

Table 3

Distribution of microleakage scores and mean rank at gingival margins

Table 3

Table 4

Statistical analysis of microleakage at gingival margins among groups by Mann-Whitney test

Table 4

*: Statistical differences at p < 0.05

Table 5

Statistical analysis between microleakage of occlusal and gingival margins in each group by Wilcoxon signed ranked test

Table 5

*: Microleakage of gingival margins was significant higher than that of occlusal margins (p < 0.05)

- : No significant difference between microleakage of occlusal and gingival margin