title: Comparative in vitro study of the shear bond strength of brackets bonded with restorative and orthodontic resins.
abstract: The aim of this study was to evaluate the shear bond strength of brackets bonded with different restorative systems and compare it with that afforded by an established orthodontic bonding system. Seventy human bicuspids were used, divided into five different groups with 14 teeth each. Whereas a specific orthodontic bonding resin (Transbond™ XT) was used in the control group, the restorative systems Charisma, Tetric Ceram, TPH Spectrum and Z100 were used in the other four groups. Seven days after bonding the brackets to the samples, shear forces were applied under pressure in a universal testing machine. The data collected was evaluated using the ANOVA test and, when a difference was identified, the Tukey test was applied. A 5% level of significance was adopted. The mean results of the shear bond strength tests were as follows: Group 1 (Charisma), 14.98 MPa; Group 2 (Tetric Ceram), 15.16 MPa; Group 3 (TPH), 17.70 MPa; Group 4 (Z100), 13.91 MPa; and Group 5 or control group (Transbond™ XT), 17.15 MPa. No statistically significant difference was found among the groups. It was concluded that all tested resins have sufficient bond strength to be recommended for bonding orthodontic brackets.
authors.affiliation: Department of Orthodontics, SOEPAR-Sindicato dos Odontologistas do Paraná, Curitiba, PR, Brazil. hassan@neo.odo.br
authors.forename: Hassan
authors.initials: H
authors.lastname: Isber
authors.forename: Aldrieli Regina
authors.initials: AR
authors.lastname: Ambrosio
authors.forename: Paulo Eduardo Guedes
authors.initials: PE
authors.lastname: Carvalho
authors.forename: Karyna Martins do
authors.initials: KM
authors.lastname: Valle-Corotti
authors.forename: Danilo Furquim
authors.initials: DF
authors.lastname: Siqueira
mesh_terms: D017438:Bisphenol A-Glycidyl Methacrylate / Q000737:chemistry*; D003188:Composite Resins / Q000737:chemistry*; D001840:Dental Bonding / Q000379:methods*; D003799:Dental Stress Analysis; D006801:Humans; D066298:In Vitro Techniques; D008422:Materials Testing; D016910:Orthodontic Brackets; D033081:Shear Strength; D012822:Silicon Dioxide / Q000737:chemistry; D013314:Stress, Mechanical; D013499:Surface Properties; D013997:Time Factors; D015040:Zirconium / Q000737:chemistry
chemical_list: C084111:Charisma composite resin; D003188:Composite Resins; C467914:TPH spectrum; C121818:Tetric ceram; C083568:Z100 composite resin; C065742:Transbond; D017438:Bisphenol A-Glycidyl Methacrylate; D012822:Silicon Dioxide; D015040:Zirconium