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http://dx.doi.org/10.5395/JKACD.2011.36.1.50

Microshear bond strength of a flowable resin to enamel according to the different adhesive systems  

Kim, Jeong-Ho (Department of Conservative Dentistry, Chosun University School of Dentistry)
Cho, Young-Gon (Department of Conservative Dentistry, Chosun University School of Dentistry)
Publication Information
Restorative Dentistry and Endodontics / v.36, no.1, 2011 , pp. 50-58 More about this Journal
Abstract
Objectives: The purpose of this study was to compare the microshear bond strength (uSBS) of two totaletch and four self-etch adhesive systems and a flowable resin to enamel. Materials and Methods: Enamels of sixty human molars were used. They were divided into one of six equal groups (n = 10) by adhesives used; OS group (One-Step Plus), SB group (Single Bond), CE group (Clearfil SE Bond), TY group (Tyrian SPE/One-Step Plus), AP group (Adper Prompt L-Pop) and GB group (G-Bond). After enamel surfaces were treated with six adhesive systems, a flowable composite resin (Filek Z 350) was bonded to enamel surface using Tygon tubes. the bonded specimens were subjected to uSBS testing and the failure modes of each group were observed under FE-SEM. Results: 1. The uSBS of SB group was statistically higher than that of all other groups, and the uSBS of OS, SE and AP group was statistically higher than that of TY and GB group (p < 0.05). 2. The uSBS for TY group was statistically higher than that for GB group (p < 0.05). 3. Adhesive failures in TY and GB group and mixed failures in SB group and SE group were often analysed. One cohesive failure was observed in OS, SB, SE and AP group, respectively. Conclusions: Although adhesives using the same step were applied the enamel surface, the uSBS of a flowable resin to enamel was different.
Keywords
Adhesive systems; Enamel; Failure modes; Flowable resin; Microshear bond strength;
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