title: Adhesion of Er:YAG laser-irradiated dentin and composite resins: application of various treatments on irradiated surface.
abstract: OBJECTIVE
  The investigation of adhesion between an Er:YAG laser-irradiated surface and composite resin is very important to ensure the best clinical results. The purpose of this investigation is to determine if the application of various treatments on Er:YAG laser-irradiated dentin surface affects the tensile bond strength between dentin and composite resins.
  
  
  METHODS
  In this investigation, the application of phosphoric acid, ultrasonic scaler, air-scaler, and air-powder polisher were tested as techniques to increase the bond strength of composite resins to Er:YAG laser-irradiated dentin surface.
  
  
  RESULTS
  The tensile bond strength of the air-powder polished group was highest, at 18.45 +/- 3.72 MPa, and the lowest value was that of the only laser-irradiated group, at 12.56 +/- 4.38 MPa.
  
  
  CONCLUSIONS
  The bond strengths in treated with air-powder polished group and phosphoric acid etched group were significantly higher than that of the group in laser irradiation alone.
authors.affiliation: Department of Endodontics & Operative Dentistry, School of Dentistry at Tokyo Nippon Dental University School of Dentistry, Tokyo, Japan. egurodental@aol.com
authors.forename: Toru
authors.initials: T
authors.lastname: Eguro
authors.forename: Toru
authors.initials: T
authors.lastname: Maeda
authors.forename: Masahito
authors.initials: M
authors.lastname: Otsuki
authors.forename: Yaeko
authors.initials: Y
authors.lastname: Nishimura
authors.forename: Ichiroh
authors.initials: I
authors.lastname: Katsuumi
authors.forename: Hisayoshi
authors.initials: H
authors.lastname: Tanaka
mesh_terms: D000134:Acid Etching, Dental; D003188:Composite Resins / Q000528:radiation effects*; D003775:Dental Polishing; D012534:Dental Scaling; D003804:Dentin / Q000000981:diagnostic imaging / Q000528:radiation effects*; D006801:Humans; D066298:In Vitro Techniques; D007834:Lasers; D008855:Microscopy, Electron, Scanning; D010756:Phosphoric Acids; D013718:Tensile Strength; D000267:Tissue Adhesions; D014463:Ultrasonography
chemical_list: D003188:Composite Resins; D010756:Phosphoric Acids; C030242:phosphoric acid