title: Effect of different time intervals between sealant application and bracket bond on adhesive strength.
abstract: The effect of variation of time between the use of the sealant and the composite itself on the bond strength of the enamel-resin-bracket system was tested in vitro for two composites. Eighty brackets were bonded to extracted human molars, half for each composite. The sealant was applied 1 minute, 2.5 minutes, 5 minutes, and 10 minutes before the use of the composite. The brackets were submitted to a shear force until debonding. Means and standard deviations were calculated. No statistically significant differences were found among the different times of sealant application and between the two composites tested, when a two-way analysis of variance was carried out.
authors.affiliation: University of North Carolina at Chapel Hill.
authors.forename: M A
authors.initials: MA
authors.lastname: Almeida
authors.forename: T M
authors.initials: TM
authors.lastname: de Araujo
authors.forename: O
authors.initials: O
authors.lastname: Chevitarese
mesh_terms: D000269:Adhesives / Q000737:chemistry*; D017438:Bisphenol A-Glycidyl Methacrylate / Q000737:chemistry; D003188:Composite Resins / Q000737:chemistry*; D001840:Dental Bonding; D003743:Dental Enamel / Q000648:ultrastructure; D004868:Equipment Failure; D006801:Humans; D008422:Materials Testing; D016910:Orthodontic Brackets; D013314:Stress, Mechanical; D013499:Surface Properties; D013997:Time Factors
chemical_list: D000269:Adhesives; D003188:Composite Resins; D017438:Bisphenol A-Glycidyl Methacrylate