title: Selected physical properties of a PEMA-based resin for possible use in a root canal filling material.
abstract: 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.
authors.affiliation: Department of Endodontics, School of Dentistry, Aichi-Gakuin University, 2-11 Suemori-dori, Chikusa-ku, Nagoya 464-8651, Japan. wani86@dpc.aichi-gakuin.ac.jp
authors.forename: Harumasa
authors.initials: H
authors.lastname: Wanibe
authors.forename: Mitsunori
authors.initials: M
authors.lastname: Yamamoto
authors.forename: Kazuhiko
authors.initials: K
authors.lastname: Nakata
authors.forename: Tatsushi
authors.initials: T
authors.lastname: Kawai
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Nakamura
mesh_terms: D000268:Adhesiveness; D003188:Composite Resins / Q000737:chemistry* / Q000627:therapeutic use; D019245:Compressive Strength; D018772:Dental Marginal Adaptation; D004338:Drug Combinations; D004548:Elasticity; D000431:Ethanol / Q000737:chemistry; D006801:Humans; D008422:Materials Testing; D008689:Methacrylates / Q000737:chemistry* / Q000627:therapeutic use; D008768:Methylmethacrylates / Q000737:chemistry* / Q000627:therapeutic use; D012387:Root Canal Filling Materials / Q000737:chemistry* / Q000627:therapeutic use; D012389:Root Canal Obturation / Q000379:methods; D013386:Succinates / Q000737:chemistry*
chemical_list: D003188:Composite Resins; D004338:Drug Combinations; D008689:Methacrylates; D008768:Methylmethacrylates; D012387:Root Canal Filling Materials; D013386:Succinates; D000431:Ethanol; C009931:poly(ethylmethacrylate); C090921:1,6-hexanediol dimethacrylate