title: Apical seal of roots obturated with laterally condensed gutta-percha, epoxy resin cement, and dentin bonding agent.
abstract: The apical seal of roots obturated with either of two kinds of dentin bonding agent, gutta-percha and epoxy-resin-based root canal sealer, was compared by a die leakage test with that of an epoxy resin root canal sealer and gutta-percha without a bonding agent. Thirty-two roots were prepared chemomechanically and divided into three experimental groups. Group 1 was filled with gutta-percha, epoxy-resin sealer, and All-Bond 2 Adhesive. Group 2 was filled with gutta-percha, epoxy-resin sealer, and Scotchbond Multi-Purpose Plus adhesive. Group 3 was filled with gutta-percha and epoxy resin sealer. The teeth were immersed in 2% methylene blue solution. Groups 1 and 2 leaked significantly less than group 3. The materials most frequently observed at the apex were in group 1 dental adhesive and in group 2 gutta-percha. The interface between dentin and the adhesive materials in groups 1 and 2 was examined by scanning electron microscope and showed a hybrid-like layer.
authors.affiliation: Department of Endodontics, University of Siena, Italy.
authors.forename: F
authors.initials: F
authors.lastname: Mannocci
authors.forename: M
authors.initials: M
authors.lastname: Ferrari
mesh_terms: D003763:Dental Leakage / Q000473:pathology / Q000517:prevention & control; D003804:Dentin / Q000648:ultrastructure; D017220:Dentin-Bonding Agents / Q000494:pharmacology*; D004853:Epoxy Resins / Q000494:pharmacology*; D006171:Gutta-Percha / Q000494:pharmacology*; D006801:Humans; D066298:In Vitro Techniques; D008855:Microscopy, Electron, Scanning; D019279:Resin Cements / Q000494:pharmacology*; D012387:Root Canal Filling Materials / Q000494:pharmacology*; D012389:Root Canal Obturation / Q000379:methods*; D013499:Surface Properties; D019227:Tooth Apex / Q000187:drug effects / Q000648:ultrastructure
chemical_list: D017220:Dentin-Bonding Agents; D004853:Epoxy Resins; D019279:Resin Cements; D012387:Root Canal Filling Materials; D006171:Gutta-Percha