Air-blowing strategies for improving the microtensile bond strength of one-step self-etch adhesives to root canal dentin
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- YONEKURA Kazuhide
- Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU)
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- HOSAKA Keiichi
- Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU)
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- TICHY Antonin
- Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU) Institute of Dental Medicine, First Faculty of Medicine of the Charles University and General University Hospital in Prague
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- TAGUCHI Keita
- Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU)
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- IKEDA Masaomi
- Department of Oral Prosthetic Engineering, Graduate School of Medical and Dental Sciences, Medical and Dental Science and Technology, Tokyo Medical and Dental University (TMDU)
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- THANATVARAKORN Ornnicha
- Faculty of Dentistry, Bangkok Thonburi University
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- PRASANSUTTIPORN Taweesak
- Department of Restorative Dentistry and Periodontology, Faculty of Dentistry, and Center of Excellence in Materials Science and Technology, Chiang Mai University
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- NAKAJIMA Masatoshi
- Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU)
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- TAGAMI Junji
- Department of Cariology and Operative Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU)
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Abstract
<p>The effect of different air-blowing strategies using a prototype of a newly developed clinically applicable warm air-blowing device on the microtensile bond strength (μTBS) of one-step self-etch adhesives (1-SEAs) to human root-canal dentin was evaluated. Post cavities (8 mm depth, 1.5 mm diameter) were prepared and bonded with four 1-SEAs. Air-blowing was performed using normal air (23±1°C) for 10 or 20 s; warm air (60±1°C) for 10 or 20 s; or their combination for 10 s (5 s normal, 5 s warm) or 20 s (10 s normal, 10 s warm). After filling with corresponding core materials and 24-h water storage, μTBS test was performed. For three of the 1-SEAs, combined air-blowing for 20 s significantly increased μTBS compared to other air-blowing strategies (p<0.05). This suggests that the combination of normal and warm air-blowing for 20 s can enhance solvent evaporation from 1-SEAs, thus resulting in their improved bonding performance to root-canal dentin.</p>
Journal
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- Dental Materials Journal
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Dental Materials Journal 39 (5), 892-899, 2020-09-28
The Japanese Society for Dental Materials and Devices