Bond strengths of three-step etch-and-rinse adhesives to silane contaminated dentin
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- SOONTORNVATIN Vasavat
- Dentist, Dental Section, Nongsung Hospital Master of Science Program in Dentistry, Faculty of Dentistry, Chiang Mai University
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- PRASANSUTTIPORN Taweesak
- Department of Restorative Dentistry and Periodontology, Faculty of Dentistry, Chiang Mai University Center of Excellence in Materials Science and Technology, Chiang Mai University
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- THANATVARAKORN Ornnicha
- Faculty of Dentistry, Bangkokthonburi University
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- JITTIDECHARAKS Sumana
- Department of Restorative Dentistry and Periodontology, Faculty of Dentistry, Chiang Mai University
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- HOSAKA Keiichi
- Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
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- FOXTON Richard M.
- Restorative Dentistry, King’s College London Dental Institute, King’s College London
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- NAKAJIMA Masatoshi
- Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
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Abstract
<p>This study aimed to evaluate the effect of silane coupling agent contamination on the microtensile bond strength (µTBS) of 3-step etch-and-rinse adhesives on dentin. Flat occlusal dentin surfaces were prepared and randomly divided into 8 groups (n=20) based on the tested adhesives; Scotchbond Multi-purpose or Optibond FL, with contamination of an experimental silane (2 vol% of 3-m ethacryloxypropyltrimethoxysilane at pH 4.5) before acid-etching, after-etching or after-priming; while the groups without silane contamination served as controls. µTBS data were analyzed by two-way ANOVA and Tukey’s HSD tests at a significance level of 0.05. Additional specimens of contaminated dentin were used to analyze changes in the organic molecules by Fourier transform infrared spectroscopy (FTIR). Silane contamination before acid-etching did not significantly change µTBS (p>0.05), but contamination after-etching and after-priming significantly decreased µTBS of both adhesives (p<0.05). Silane contamination had an adverse effect on the dentin bond strength of 3-step etch-and-rinse adhesives especially after-priming.</p>
Journal
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- Dental Materials Journal
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Dental Materials Journal 40 (2), 385-392, 2021-03-25
The Japanese Society for Dental Materials and Devices