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http://dx.doi.org/10.5395/JKACD.2005.30.5.355

EFFECT OF BISCOVER ON THE MARGINAL MICROLEAKAGE OF COMPOSITE RESIN RESTORATION  

Cho, Young-Gon (Department of Conservative Dentistry, College of Dentistry, Chosun University)
Choi, Hee-Young (Department of Conservative Dentistry, College of Dentistry, Chosun University)
Publication Information
Restorative Dentistry and Endodontics / v.30, no.5, 2005 , pp. 355-362 More about this Journal
Abstract
The purpose of this study was to compare the effect on marginal leakage of a resin surface sealant (Biscover) applied before or after polymerization of composite resin to unsealed composite restorations. Thirty Class V cavities with the occlusal margin in enamel and cervical margin in dentin or cementum were prepared on the buccal surfaces of sound extracted molars and restored with a microfilled light-cured composite resin (Micronew). Restorations were randomly assigned into one of three equal groups (n = 10): a control group - no surface sealing, group 1 - applied Biscover after polymerization of the composite resin. and group 2 - applied Biscover before polymerization of the composite resin. Specimens were thermocycled, immersed in a $20\%$ methylene blue solution for 4 hoots, sectioned longitudinally, and analyzed for leakage at the occlusal and gingival margins. The results of this study were as follows 1. In sealed group, group 2 showed higher microleakage than group 1 at both occlusal and gingival margins. but there was no significant difference between two groups (p > 0.05). 2. Unsealed control group showed a little higher microleakage than sealed group at occlusal margins, and a little Higher or similar microleakage than sealed group at gingival margins (p > 0.05) 3. Control group and group 2 showed significantly less microleakage at the occlusal margins, but group 1 showed no significantly difference between microleakage at the occlusal and gingival margins.
Keywords
Biscover; Resin surface sealant; Microleakage; Class V cavity; Occlusal margin or gingival margin;
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