title: In vitro analysis of shear bond strength and adhesive remnant index of different metal brackets.
abstract: There is a great variety of orthodontic brackets in the Brazilian market, and constantly evaluating them is critical for professionals to know their properties, so as to be able to choose which product best suits their clinical practice.
  To evaluate the bond strength and the adhesive remnant index (ARI) of different brands of metal brackets.
  A total of 105 bovine incisors were used, and brackets of different brands were bonded to teeth. Seven different bracket brands were tested (MorelliTM, American OrthodonticsTM, TP OrthodonticsTM, Abzil-3MTM, OrthometricTM, TecnidentTM and UNIDENTM). Twenty-four hours after bonding, shear bond strength test was performed; and after debonding, the ARI was determined by using an optical microscope at a 10-fold increase.
  Mean shear bond strength values ranged from 3.845 ± 3.997 (MorelliTM) to 9.871 ± 5.106 MPa (TecnidentTM). The majority of the ARI index scores was 0 and 1.
  Among the evaluated brackets, the one with the lowest mean shear bond strength values was MorelliTM. General evaluation of groups indicated that a greater number of bond failure occurred at the enamel/adhesive interface.
authors.affiliation: Orthodontics' graduate student, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre/RS, Brazil.
authors.forename: Fernanda de Souza
authors.initials: FS
authors.lastname: Henkin
authors.affiliation: Professor of Certificate in Orthodontic Program, Orthodontics Department, Universidade Federal do Rio Grande do Sul, Porto Alegre/RS, Brazil.
authors.forename: Érika de Oliveira Dias de
authors.initials: ÉO
authors.lastname: Macêdo
authors.affiliation: Undergraduate student, School of Dentistry, Universidade Federal do Rio Grande do Sul, Porto Alegre/RS, Brazil.
authors.forename: Karoline da Silva
authors.initials: KD
authors.lastname: Santos
authors.affiliation: Orthodontic Certificate student, Orthodontics Department, Universidade Federal do Rio Grande do Sul, Porto Alegre/RS, Brazil.
authors.forename: Marília
authors.initials: M
authors.lastname: Schwarzbach
authors.affiliation: Titular Professor, Dental Materials Laboratory, School of Dentistry, Universidade Federal do Rio Grande do Sul, Porto Alegre/RS.
authors.forename: Susana Maria Werner
authors.initials: SM
authors.lastname: Samuel
authors.affiliation: Adjunct Professor, Orthodontics Department, School of Dentistry, Universidade Federal do Rio Grande do Sul, Porto Alegre/RS, Brazil.
authors.forename: Karina Santos
authors.initials: KS
authors.lastname: Mundstock
mesh_terms: D001840:Dental Bonding / Q000379:methods / Q000592:standards*; D003738:Dental Cements / Q000592:standards / Q000627:therapeutic use; D003799:Dental Stress Analysis; D006801:Humans; D016910:Orthodontic Brackets / Q000592:standards*; D033081:Shear Strength
chemical_list: D003738:Dental Cements