Effects of degree of dissociation of acid used on hydrolytic durability of ceramic primer
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- AOKI Naoko
- Department of Crown Bridge Prosthodontics, Nihon University School of Dentistry
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- KIMOTO Suguru
- Department of Removable Prosthodontics, Nihon University School of Dentistry
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- TANIMURA Hideki
- Department of Crown Bridge Prosthodontics, Nihon University School of Dentistry
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- NISHIYAMA Norihiro
- Department of Dental Biomaterials, Nihon University School of Dentistry
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- AIDA Masahiro
- Department of Crown Bridge Prosthodontics, Nihon University School of Dentistry
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説明
In this study, effects of the degree of dissociation of acids on the hydrolysis rate of methoxy group in γ-methacryloxypropyltrimethoxysilane (γ-MPS) and the adsorption characteristics of γ-MPS on ceramic surfaces were studied using acetic, phosphoric, and hydrochloric acids. Hydrolytic stability of γ-MPS adsorption layer at the resin-ceramic interface was thus examined. 29Si NMR observations of acidactivated γ-MPS and contact angle measurements following ceramic surface silanization were performed. Bond strengths of resin to the silanized ceramic surfaces were measured. Statistical analyses of shear bond strength and contact angle data were performed. Increase in the degree of dissociation of the acid used increased the hydrolysis rate of methoxy group in γ-MPS, but lowered the contact angle to the silanized ceramic surface. Decrease in the contact angle increased the hydrolytic stability of γ-MPS adsorption layer.
収録刊行物
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- Dental Materials Journal
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Dental Materials Journal 33 (5), 614-620, 2014
一般社団法人 日本歯科理工学会