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Materials 2017, 10(11), 1224; doi:10.3390/ma10111224

Effect of Dentin Wetness on the Bond Strength of Universal Adhesives

Department of Conservative Dentistry, School of Dentistry, Pusan National University, Dental Research Institute, Yangsan 50612, Korea
Department of Oral Pathology & BK21 PLUS Project, School of Dentistry, Institute of Translational Dental Sciences, Pusan National University, Yangsan 50612, Korea
Department of Dental Materials, School of Dentistry, Pusan National University, Yangsan 50612, Korea
Author to whom correspondence should be addressed.
Received: 26 September 2017 / Revised: 20 October 2017 / Accepted: 23 October 2017 / Published: 25 October 2017
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The effects of dentin wetness on the bond strength and adhesive interface morphology of universal adhesives have been investigated using micro-tensile bond strength (μTBS) testing and confocal laser scanning microscopy (CLSM). Seventy-two human third molars were wet ground to expose flat dentin surfaces. They were divided into three groups according to the air-drying time of the dentin surfaces: 0 (without air drying), 5, and 10 s. The dentin surfaces were then treated with three universal adhesives: G-Premio Bond, Single Bond Universal, and All-Bond Universal in self-etch or etch-and-rinse mode. After composite build up, a μTBS test was performed. One additional tooth was prepared for each group by staining the adhesives with 0.01 wt % of Rhodamine B fluorescent dye for CLSM analysis. The data were analyzed statistically using ANOVA and Tukey’s post hoc tests (α = 0.05). Two-way ANOVA showed significant differences among the adhesive systems and dentin moisture conditions. An interaction effect was also observed (p < 0.05). One-way ANOVA showed that All-Bond Universal was the only material influenced by the wetness of the dentin surfaces. Wetness of the dentin surface is a factor influencing the micro-tensile bond strength of universal adhesives. View Full-Text
Keywords: bonding; adhesive resins; dentin; micro-tensile strength; confocal laser scanning microscopy bonding; adhesive resins; dentin; micro-tensile strength; confocal laser scanning microscopy

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Choi, A.-N.; Lee, J.-H.; Son, S.-A.; Jung, K.-H.; Kwon, Y.H.; Park, J.-K. Effect of Dentin Wetness on the Bond Strength of Universal Adhesives. Materials 2017, 10, 1224.

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