title: Comparing the tensile strength of brackets adhered to laser-etched enamel vs. acid-etched enamel.
abstract: This study compared the tensile bond strength of brackets adhered to laser-etched enamel with that of brackets adhered to acid-etched enamel. Forty extracted, intact bovine teeth were treated with either 37 percent phosphoric acid for 15 seconds or neodymium:yttrium-aluminumgarnet laser on black-ink-coated enamel. After thermocycling, tensile stress was applied to the bonded specimens at a 0.1 millimeter/minute orosshead speed. A t-test comparison of means showed a significant difference between the laser-etched and acid-etched teeth, with the acid-etched teeth demonstrating significantly more tensile bond strength at a 95 percent level of significance.
authors.affiliation: Department of Radiology, Universidad de Granada, Spain.
authors.forename: L
authors.initials: L
authors.lastname: Corpas-Pastor
authors.forename: J
authors.initials: J
authors.lastname: Villalba Moreno
authors.forename: J
authors.initials: J
authors.lastname: de Dios Lopez-Gonzalez Garrido
authors.forename: V
authors.initials: V
authors.lastname: Pedraza Muriel
authors.forename: K
authors.initials: K
authors.lastname: Moore
authors.forename: A
authors.initials: A
authors.lastname: Elias
mesh_terms: D000134:Acid Etching, Dental; D000818:Animals; D017438:Bisphenol A-Glycidyl Methacrylate; D002417:Cattle; D001840:Dental Bonding / Q000379:methods*; D003743:Dental Enamel / Q000187:drug effects / Q000528:radiation effects; D003799:Dental Stress Analysis; D007834:Lasers; D008422:Materials Testing; D016910:Orthodontic Brackets; D010756:Phosphoric Acids / Q000494:pharmacology; D013718:Tensile Strength
chemical_list: D010756:Phosphoric Acids; D017438:Bisphenol A-Glycidyl Methacrylate; C030242:phosphoric acid