title: Effect of air-powder polishing on dentin adhesion of a self-etching primer bonding system.
abstract: The purpose of this study was to evaluate the effect of air-powder polishing with sodium bicarbonate (SB) or crystalline cellulose (CC) on the bond strength of a self-etching primer bonding system to dentin. Ground human dentin surfaces were prepared using 600-grit SiC paper. The teeth were divided into three groups according to dentin treatment: control, air-powder polishing with SB, and air-powder polishing with CC. The dentin surfaces were bonded with a self-etching primer bonding system, followed by a light-cured resin composite. microTBS test and SEM analysis were performed. The results of microTBS test indicated that air-powder polishing with SB affected bond strength to dentin, while that with CC did not influence bond strength. SEM observation of air-polished dentin surfaces showed that dentin surfaces air-polished with SB were roughened and covered with a smear layer, while those with CC were smooth and the smear layer was removed.
authors.affiliation: Cariology and Operative Dentistry, Department of Restorative Sciences, Graduate School, Tokyo Medical and Dental University, Japan. nishimura.ope@tmd.ac.jp
authors.forename: Kozo
authors.initials: K
authors.lastname: Nishimura
authors.forename: Toru
authors.initials: T
authors.lastname: Nikaido
authors.forename: Richard M
authors.initials: RM
authors.lastname: Foxton
authors.forename: Junji
authors.initials: J
authors.lastname: Tagami
mesh_terms: D020906:Air Abrasion, Dental / Q000379:methods*; D002482:Cellulose; D001840:Dental Bonding; D045662:Dental Etching; D003799:Dental Stress Analysis; D003804:Dentin; D017220:Dentin-Bonding Agents; D006801:Humans; D008422:Materials Testing; D008689:Methacrylates; D008855:Microscopy, Electron, Scanning; D019279:Resin Cements; D016369:Smear Layer; D017693:Sodium Bicarbonate; D013499:Surface Properties; D013718:Tensile Strength
chemical_list: C112828:Clearfil AP-X; C438313:Clearfil SE Bond; D017220:Dentin-Bonding Agents; D008689:Methacrylates; D019279:Resin Cements; D017693:Sodium Bicarbonate; D002482:Cellulose