Selected physical properties of a PEMA-based resin for possible use in a root canal filling material
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概要
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The purpose of this study was to examine the physical properties of PEMA-TA/HX-based resins including 20 to 100% ethanol, for a root canal filling material. The values of the elastic modulus in the samples including ethanol were more than 250 MPa, being higher than the approximately 40 MPa of Gutte-percha (GP). The values of compressive strain in the samples increased in an ethanol concentration-dependent manner. The weight of samples including ethanol decreased gradually. In the adhesiveness test, the values of PEMA-TA/HX-based resins including ethanol were significantly higher than that of GP (p<0.01). Cohesive fractures were observed in Super-Bond SEALER in the samples including ethanol except for 20%. The results suggest that the new PEMA-TA/HX-based resin cone in combination with resin-based sealer might facilitate “monoblock obturation”. The new PEMA-TA/HX-based resin cone developed in the present study may be effective root canal filling material for vertical root fractures.
著者
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NAKAMURA Hiroshi
Department of Analytical Chemistry, Faculty of Pharmaceutical Sciences, Science University of Tokyo
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WANIBE Harumasa
Department of Endodontics, School of Dentistry, Aichi-Gakuin University
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YAMAMOTO Mitsunori
Department of Endodontics, School of Dentistry, Aichi-Gakuin University
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NAKATA Kazuhiko
Department of Endodontics, School of Dentistry, Aichi-Gakuin University
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KAWAI Tatsushi
Dental Material Science, School of Dentistry, Aichi-Gakuin University
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