Effect of air-powder polishing on dentin adhesion of a self-etching primer bonding system.
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.
Nishimura
Kozo
K
Cariology and Operative Dentistry, Department of Restorative Sciences, Graduate School, Tokyo Medical and Dental University, Japan. nishimura.ope@tmd.ac.jp
Nikaido
Toru
T
Foxton
Richard M
RM
Tagami
Junji
J
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
C112828:Clearfil AP-X; C438313:Clearfil SE Bond; D017220:Dentin-Bonding Agents; D008689:Methacrylates; D019279:Resin Cements; D017693:Sodium Bicarbonate; D002482:Cellulose