Effects of rotating fatigue on the mechanical properties of microhybrid and nanofiller-containing composites
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概要
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The objective of this study was to assess and compare the flexural strength and Vickers hardness of five nanofiller-containing composites (Filtek Supreme XT, Gradia Forte, Luna-Wing, GNH400N, GCUC) against five microhybrid composites (Meta Color Prime Art, Solidex, Estenia C&B, Ceramage, Clearfil Majesty) before and after rotating fatigue test (RFT). For each resin composite, 16 rectangular beam specimens (2 mm×2 mm×25 mm) were prepared and half of which were subjected to 1×104 cycles in RFT. Flexural strength was determined using a three-point bending test. Vickers hardness measurements were carried out on specimens which failed after the three-point bending test. When under the influence of rotating fatigue, the flexural strength of all composites was affected by multiple factors. In contrast, rotating fatigue had no significant influence on the Vickers hardness of both microhybrid and nanofiller-containing composites.
著者
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SHINYA Akikazu
Department of Crown and Bridge, School of Life Dentistry at Tokyo, The Nippon Dental University
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Shinya Akiyoshi
Department Of Crown And Bridge School Of Life Dentistry At Tokyo The Nippon Dental University
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SHINYA Akikazu
Department of Biomaterials Science and BioCity Turku Biomaterials Research Program, Institute of Dentistry, University of Turku
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LIN Jie
School and Hospital of Stomatology, Fujian Medical University
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SUN Minglei
Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Zhengzhou University
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ZHENG Zhiqiang
School and Hospital of Stomatology, Fujian Medical University
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HAN Jianmin
Dental Materials Laboratory, Peking University School and Hospital of Stomatology
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LIN Hong
Dental Materials Laboratory, Peking University School and Hospital of Stomatology
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ZHENG Gang
Dental Materials Laboratory, Peking University School and Hospital of Stomatology
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SUN Minglei
Department of Oral and Maxillofacial Surgery, First Affiliated Hospital of Zhengzhou University
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