Adhesion of Er:YAG laser-irradiated dentin and composite resins: application of various treatments on irradiated surface.
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.
Eguro
Toru
T
Department of Endodontics & Operative Dentistry, School of Dentistry at Tokyo Nippon Dental University School of Dentistry, Tokyo, Japan. egurodental@aol.com
Maeda
Toru
T
Otsuki
Masahito
M
Nishimura
Yaeko
Y
Katsuumi
Ichiroh
I
Tanaka
Hisayoshi
H
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
D003188:Composite Resins; D010756:Phosphoric Acids; C030242:phosphoric acid