Comparing the tensile strength of brackets adhered to laser-etched enamel vs. acid-etched enamel.
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.
Corpas-Pastor
L
L
Department of Radiology, Universidad de Granada, Spain.
Villalba Moreno
J
J
de Dios Lopez-Gonzalez Garrido
J
J
Pedraza Muriel
V
V
Moore
K
K
Elias
A
A
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
D010756:Phosphoric Acids; D017438:Bisphenol A-Glycidyl Methacrylate; C030242:phosphoric acid