title: Effectiveness of an Er:YAG laser in etching the enamel surface for orthodontic bracket retention.
abstract: The purpose of this study was to test the effectiveness of an Er:YAG laser in etching the enamel surface for orthodontic treatment. Bovine incisors were either acid-etched or laser-treated. An orthodontic bracket was attached on each treated surface using one-step dentin adhesive and self-curing resin. Tensile bond strength was then evaluated. In addition, the surface morphology of specimens treated with phosphoric acid/laser and self-etching primer, as well as the cross-section of enamel-primer-resin interfaces, were observed. One-Up Bond F-treated specimens after Er:YAG laser ablation showed statistically similar tensile bond strength (9.9 +/- 1.3 MPa) to that of phosphoric acid-etched specimens (11.8 +/- 1.7 MPa). Surface roughness and thickness of the enamel-primer-resin interfaces did not much affect the tensile bond strength of the tested specimens. In conclusion, Er:YAG laser ablation achieved clinically acceptable level of tensile bond strength when used with One-Up Bond F.
authors.affiliation: Department of Orthodontics, College of Dentistry, Kyungpook National University, Daegu, Korea. y0k0916@pusan.ac.kr
authors.forename: Jung-Ho
authors.initials: JH
authors.lastname: Kim
authors.forename: Oh-Won
authors.initials: OW
authors.lastname: Kwon
authors.forename: Hyung-Il
authors.initials: HI
authors.lastname: Kim
authors.forename: Yong Hoon
authors.initials: YH
authors.lastname: Kwon
mesh_terms: D000704:Analysis of Variance; D000818:Animals; D017438:Bisphenol A-Glycidyl Methacrylate; D002417:Cattle; D003743:Dental Enamel; D045662:Dental Etching / Q000295:instrumentation / Q000379:methods*; D003799:Dental Stress Analysis; D017220:Dentin-Bonding Agents; D007834:Lasers; D008689:Methacrylates; D016910:Orthodontic Brackets; D011092:Polyethylene Glycols; D019279:Resin Cements; D018709:Statistics, Nonparametric; D013499:Surface Properties; D013718:Tensile Strength
chemical_list: C453842:AQ bond; D017220:Dentin-Bonding Agents; D008689:Methacrylates; C509516:ORTHO-ONE; C446260:One-Up-Bond F; D019279:Resin Cements; D011092:Polyethylene Glycols; D017438:Bisphenol A-Glycidyl Methacrylate