The repair bond strength to resin matrix in cured resin composites after water aging
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- ALQARNI Dhaifallah
- Department of Cariology and Operative Dentistry, Department of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
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- NAKAJIMA Masatoshi
- Department of Cariology and Operative Dentistry, Department of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
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- HOSAKA Keiichi
- Department of Cariology and Operative Dentistry, Department of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
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- IDE Kurumi
- Department of Cariology and Operative Dentistry, Department of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
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- NAGANO Daiki
- Department of Cariology and Operative Dentistry, Department of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
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- WADA Takehiro
- Department of Advanced Biomaterials, Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
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- IKEDA Masaomi
- Department of Oral Prosthetic Engineering, Graduate School, Tokyo Medical and Dental University
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- MAMANEE Teerapong
- Department of Restorative Dentistry and Periodontology, Faculty of Dentistry, Chiangmai University
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- THANATVARAKORN Ornnicha
- Faculty of Dentistry, Bangkokthonburi University
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- PRASANSUTTIPORN Taweesak
- Department of Restorative Dentistry and Periodontology, Faculty of Dentistry, Chiangmai University Center of Excellence in Materials Science and Technology, Chiang Mai University
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- FOXTON Richard
- Restorative Dentistry, King’s College London Dental Institute, King’s College London
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- TAGAMI Junji
- Department of Cariology and Operative Dentistry, Department of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
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Abstract
<p>The repair microshear bond strengths (µSBSs) to resin matrices in 4 different cured-composites after water storage (0, 60 s, 1 week, 1 month) were evaluated. Three different adhesive application methods to the cured-composites were performed; (1) none, (2) onestep self-etch adhesive application, and (3) one-step self-etch adhesive application with a silane coupling agent. Degree of conversion (DC) of the composite discs was determined using ATR/FT-IR with a time-based spectrum analysis. Initially, the amount of un-reacted resin monomers in the repaired cured-composite contributed to the bonding performance of newly-filled uncured-composite to resin matrix of the cured-composite. Adhesive application could not improve their repair µSBS. After 1-month of water-storage, the repair µSBS was dependent on material, which either reduced or did not and was not influenced by their amount of un-reacted resin monomers. When repairing aged composite resin, the appropriate adhesive application procedures were different among resin composites.</p>
Journal
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- Dental Materials Journal
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Dental Materials Journal 38 (2), 233-240, 2019-03-28
The Japanese Society for Dental Materials and Devices