Published online Jul 31, 2006.
https://doi.org/10.5395/JKACD.2006.31.4.282
Effect of resin sealants on the reduction of microleakage in composite restorations
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).
Table 1
Group classification by types of resin sealants
Table 2
Distribution of microleakage scores and mean rank at occlusal margins
Table 3
Distribution of microleakage scores and mean rank at gingival margins
Table 4
Statistical analysis of microleakage at gingival margins among groups by Mann-Whitney test
Table 5
Statistical analysis between microleakage of occlusal and gingival margins in each group by Wilcoxon signed ranked test
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