Effect of the Adhesive Layer Thichness on the Fracture Toughness of Dental Adhesive Resins
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概要
- 論文の詳細を見る
We investigated how the thickness of an adhesive layer between two Co-Cr alloy plates affected the mode I fracture toughness of dental adhesive resin by varying the type of resin using a double cantilever beam (DCB) test. Two typical adhesive resins (PV and SB) were used. The adhesive layers of the DCB test specimens were 20, 100 and 200μm thick. The fracture modes of PV differed with the thickness of the adhesive layer, such as interface fracture at 20μm thickness, nad similar cohesive fracture at 100 and 200μm thickness. In the case of SB, crack-propagating areas were observed as cohesive fractures in all test specimens with different adhesive layer thickness, and the surfaces of these areas become remarkably rougher as the thickness of the adhesive layer increased. The fracture toughness of PV was not affected by the difference in thickness between the 100 and 200μm adhesive layers, but there was a notable decrease in fracture toughness when the adhesive layer decreased to a thickness of 20μm. That of SB showed a tendency to increase as the adhesive layer became thicker.
- 日本歯科理工学会の論文
著者
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Nagai Megumi
Department Of Comprehensive Clinical Dentistry Nihon University School Of Dentistry At Matsudo
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Nagai Masahiro
Department Of Medicinal Plant Sciences Hoshi University
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Nagai Masahiro
Department Of Comprehensive Clinical Dentistry Nihon University School Of Dentistry At Matsudo
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AI Hongjun
School of Stomatology, China Medical University
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Ai Hongjun
School Of Stomatology China Medical University
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Nagai Masahiro
Department Of Biodesign Division Of Biosystems Institute Of Biomaterials And Bioengineering Tokyo Me
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