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Bonding effectiveness of different dentin conditions on etch-and-rinse mode of two universal adhesives: the confocal laser scanning and shear bond strength

Authors
 Jounghyun Lee  ;  Ka-Young Cho  ;  Jin-Young Kim  ;  Sungho Park  ;  Byoung-Duck Roh  ;  Yooseok shin 
Citation
 JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY, Vol.31(9) : 933-942, 2017 
Journal Title
 JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY 
ISSN
 0169-4243 
Issue Date
2017
Keywords
Rewetting agent ; one-bottle universal adhesive ; confocal laser scanning ; shear bond strength
Abstract
The purpose of this study was to evaluate the shear bond strength and the morphological differences of adhesive/dentin interface of two one-step universal adhesives to dentin using different dentin-conditioning methods with etch-and-rinse mode. Ninety-six dentin specimens were randomly divided into two groups based on application of two adhesives and assigned to three subgroups according to different dentin conditioning (wet-bonding; air-dried; rewetting). After etching and rinsing, experimental dentin conditioning was conducted on the etched dentin specimens. All specimens were subjected to shear bond strength testing using a universal testing machine, and all data were statistically analyzed using two- way analysis of variance with Tukey’s post hoc test. All debonded specimens were examined for fracture pattern by scanning electron microscopy (SEM). Adjunctively, one specimen per group was prepared by the same processing and longitudinally sectioned. Then, the infiltration ability of adhesives into dentin was examined by observing the interface using confocal laser-scanning microscopy (CLSM). Wet and Rewet groups exhibited significantly higher shear bond strength than dry groups on the etch-and-rinse system, regardless of different adhesives. The bond strength between wet and rewet groups showed no significant difference in Tukey’s test. Analysis of failure surface using SEM showed that predominant failure patterns were mixed in both the wet-bonding group and dry-bonding group. CLSM presented that resin penetration into etched dentin was enhanced similarly in wet and rewet group. Application of rewetting agents on dried dentin increased the bonding performance of universal adhesives on etch-and-rinse mode.
Full Text
http://www.tandfonline.com/doi/abs/10.1080/01694243.2016.1235079
DOI
10.1080/01694243.2016.1235079
Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Conservative Dentistry (보존과학교실) > 1. Journal Papers
Yonsei Authors
Roh, Byoung Duck(노병덕)
Park, Sung Ho(박성호) ORCID logo https://orcid.org/0000-0003-2171-235X
Shin, Yoo Seok(신유석) ORCID logo https://orcid.org/0000-0003-1121-2570
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/154707
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