title: Effect of resin coating on adhesion of composite crown restoration.
abstract: The purpose of this study was to evaluate the effect of a resin coating technique on the microtensile bond strength (microTBS) of resin cement to dentin in composite crown restorations. Crown preparations were done on human molars. A resin coating material, Hybrid Bond, was immediately applied to the prepared dentin and light-cured, while the tooth without resin coating acted as the control. An impression of the resin-coated tooth was taken, and a composite crown fabricated on the working cast. The composite crown was then bonded with a resin cement, Chemiace II. MicroTBSs were measured at a crosshead speed of 1 mm/min, and the resin-coated group yielded significantly higher microTBSs than the non-coated group (p < 0.05). In terms of microTBS values between the axial and occlusal surfaces, no regional differences in resin-dentin bond strength were detected (p < 0.05). It was concluded that resin coating with Hybrid Bond significantly improved the microTBS of resin cement to dentin in composite crown restorations.
authors.affiliation: Cariology and Operative Dentistry, Graduate School, Tokyo Medical and Dental University, 5-45, Yushima 1-Chome, Bunkyo-ku, Tokyo, Japan. drrafiqulislam@gmail.com
authors.forename: Md Rafiqul
authors.initials: MR
authors.lastname: Islam
authors.forename: Tsunehiko
authors.initials: T
authors.lastname: Takada
authors.forename: Dinesh S
authors.initials: DS
authors.lastname: Weerasinghe
authors.forename: Md Akhtar
authors.initials: MA
authors.lastname: Uzzaman
authors.forename: Richard M
authors.initials: RM
authors.lastname: Foxton
authors.forename: Toru
authors.initials: T
authors.lastname: Nikaido
authors.forename: Junji
authors.initials: J
authors.lastname: Tagami
mesh_terms: D000704:Analysis of Variance; D020099:Coated Materials, Biocompatible; D003188:Composite Resins; D003442:Crowns; D001840:Dental Bonding; D017268:Dental Prosthesis Retention; D003799:Dental Stress Analysis; D003801:Dental Veneers; D003804:Dentin; D017220:Dentin-Bonding Agents; D006801:Humans; D008422:Materials Testing; D008855:Microscopy, Electron, Scanning; D008963:Molar; D019279:Resin Cements; D013718:Tensile Strength; D019231:Tooth Preparation, Prosthodontic
chemical_list: D020099:Coated Materials, Biocompatible; D003188:Composite Resins; D017220:Dentin-Bonding Agents; C514345:Hybrid Bond; D019279:Resin Cements