Hardness and Elasticity of Sound and Caries-affected Primary Dentin Bonded with One-step Self-etch Adhesive
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概要
- 論文の詳細を見る
Biomechanical properties of bonded dentin are important for resin restorations. We hypothesized that there are no differences in the hardness and elasticity of sound and caries-affected primary dentin bonded with a one-step self-etch adhesive. Resin-dentin interfaces in sound and caries-affected primary dentin were measured with a nano-indentation tester and observed with SEM and TEM. Interfacial dentin hardness was similar for sound and caries-affected dentin, but significantly lower than the underlying intact dentin. As for the Young's modulus of interfacial dentin, both substrates exhibited significantly lower values than the subsurface dentin. Further, the Young's modulus of interfacial dentin was significantly lower in caries-affected dentin. TEM revealed extensive interfacial nanoleakage in bonded sound dentin, while it was minimal in bonded caries-affected dentin. However, in the latter, silver deposits were identified within the porous substrate. Shorter application time and/or improvement of the adhesive components may be required to obtain stable adhesion in primary dentin.
- 日本歯科理工学会の論文
著者
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INOUE Takashi
Department of Neurosurgery, School of Medicine, Iwate Medical University
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HOSOYA Yumiko
Department of Cardiovascular Medicine, The University of Tokyo
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TAY Franklin
Department of Oral Biology and Maxillofacial Pathology, School of Dentistry, Medical College of Geor
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Hosoya Yumiko
Department Of Cardiology Sakakibara Heart Institute Japan Research Promotion Society For Cardiovascu
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Hosoya Yumiko
Department Of Pediatric Dentistry Course Of Medical And Dental Sciences Nagasaki University Graduate
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Miyazaki Masashi
Department of Operative Dentistry, Nihon University School of Dentistry
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Tay Franklin
Department Of Endodontics Department Of Oral Biology And Maxillofacial Pathology Medical College Of
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Miyazaki Masashi
Department Of Operative Dentistry Nihon University School Of Dentistry
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Tay Franklin
Department Of Oral Biology And Maxillofacial Pathology School Of Dentistry Medical College Of Georgi
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Miyazaki Masashi
Department Of Internal Medicine 1 Sinshu University Medical School
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Inoue Takashi
Department Of Neurosurgery Iwate Medical University
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INOUE Takashi
Department of Agricultural Chemistry, Faculty of Agriculture, The University of Tokyo
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