title: Dentin bonding and sealing ability of a new root canal resin sealer.
abstract: The aims of this study were to find a dentin bonding system suitable for root canal treatment using a newly developed root canal resin sealer, and to examine its sealing ability. The sealer was composed of vinylidene fluoride/hexafluoropropylene copolymer, methyl methacrylate, zirconia, and tributylborane catalyst. The effects of dentin conditioners and primers on dentin bonding were studied by tensile bond strength testing and scanning electron microscopy. Apical and coronal leakage were evaluated at 1-, 4-, and 12-wk intervals by a dye penetration test using a methylene blue solution. Pulp Canal Sealer EWT and Sealapex were used as controls. Significantly high bond strength was obtained by treating dentin with EDTA, followed by application of a glutaraldehyde/2-hydroxyethyl methacrylate primer. The experimental resin sealer produced a significantly superior coronal seal at 12 wk when compared with the two control sealers (p < 0.05). Scanning electron microscopic examination revealed few gaps at the resin sealer-dentin interface.
authors.affiliation: Department of Endodontics, Faculty of Dentistry, Tokyo Medical and Dental University, 1-5-45, Yushima, Bunkyo-ku, Tokyo 113-8549, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Kataoka
authors.forename: T
authors.initials: T
authors.lastname: Yoshioka
authors.forename: H
authors.initials: H
authors.lastname: Suda
authors.forename: Y
authors.initials: Y
authors.lastname: Imai
mesh_terms: D000475:Alkenes / Q000737:chemistry; D000704:Analysis of Variance; D001896:Boron Compounds / Q000737:chemistry; D002126:Calcium Hydroxide / Q000737:chemistry; D002614:Chelating Agents / Q000008:administration & dosage; D004396:Coloring Agents; D001840:Dental Bonding / Q000379:methods*; D003763:Dental Leakage / Q000145:classification; D003804:Dentin / Q000648:ultrastructure*; D017220:Dentin-Bonding Agents / Q000737:chemistry; D004492:Edetic Acid / Q000008:administration & dosage; D005459:Fluorides / Q000737:chemistry; D005976:Glutaral / Q000737:chemistry; D006801:Humans; D008422:Materials Testing; D008689:Methacrylates / Q000737:chemistry; D008751:Methylene Blue; D020366:Methylmethacrylate / Q000737:chemistry; D008855:Microscopy, Electron, Scanning; D019279:Resin Cements / Q000737:chemistry*; D012387:Root Canal Filling Materials / Q000737:chemistry*; D012388:Root Canal Irrigants / Q000008:administration & dosage; D012459:Salicylates / Q000737:chemistry; D013499:Surface Properties; D013718:Tensile Strength; D013997:Time Factors; D014753:Vinyl Compounds / Q000737:chemistry; D015040:Zirconium / Q000737:chemistry
chemical_list: D000475:Alkenes; D001896:Boron Compounds; D002614:Chelating Agents; D004396:Coloring Agents; D017220:Dentin-Bonding Agents; D008689:Methacrylates; D019279:Resin Cements; D012387:Root Canal Filling Materials; D012388:Root Canal Irrigants; D012459:Salicylates; D014753:Vinyl Compounds; C055601:Sealapex; C009523:tri-n-butylborane; D020366:Methylmethacrylate; C007384:1,1-difluoroethylene; C005044:hydroxyethyl methacrylate; D004492:Edetic Acid; C013658:propylene; D015040:Zirconium; D002126:Calcium Hydroxide; D005459:Fluorides; C028541:zirconium oxide; D005976:Glutaral; D008751:Methylene Blue