title: Effect of saliva contamination on bond strength with a hydrophilic composite resin.
abstract: OBJECTIVE
  To evaluate the influence of saliva contamination on the bond strength of metallic brackets bonded to enamel with hydrophilic resin composite.
  
  
  METHODS
  Eighty premolars were randomly divided into 4 groups (n = 20) according to bonding material and contamination: G1) bonded with Transbond XT with no saliva contamination, G2) bonded with Transbond XT with saliva contamination, G3) bonded with Transbond Plus Color Change with no saliva contamination and G4) bonded with Transbond Plus Color Change with saliva contamination. The results were statistically analyzed (ANOVA/Tukey).
  
  
  RESULTS
  The means and standard deviations (MPa) were: G1) 10.15 ± 3.75; G2) 6.8 ± 2.54; G3) 9.3 ± 3.36; G4) 8.3 ± 2.95. The adhesive remnant index (ARI) ranged between 0 and 1 in G1 and G4. In G2 there was a prevalence of score 0 and similar ARI distribution in G3.
  
  
  CONCLUSIONS
  Saliva contamination reduced bond strength when Transbond XT hydrophobic resin composite was used. However, the hydrophilic resin Transbond Plus Color Change was not affected by the contamination.
authors.affiliation: School of Dentistry - PUCPR.
authors.forename: Mauren Bitencourt
authors.initials: MB
authors.lastname: Deprá
authors.forename: Josiane Xavier
authors.initials: JX
authors.lastname: de Almeida
authors.forename: Taís de Morais Alves
authors.initials: Tde M
authors.lastname: da Cunha
authors.forename: Luis Filipe Siu
authors.initials: LF
authors.lastname: Lon
authors.forename: Luciana Borges
authors.initials: LB
authors.lastname: Retamoso
authors.forename: Orlando Motohiro
authors.initials: OM
authors.lastname: Tanaka
mesh_terms: D000704:Analysis of Variance; D001641:Bicuspid; D017438:Bisphenol A-Glycidyl Methacrylate / Q000737:chemistry*; D003188:Composite Resins / Q000737:chemistry*; D001840:Dental Bonding / Q000379:methods*; D003743:Dental Enamel / Q000737:chemistry*; D006801:Humans; D057927:Hydrophobic and Hydrophilic Interactions; D016910:Orthodontic Brackets; D012463:Saliva / Q000737:chemistry*; D033081:Shear Strength
chemical_list: D003188:Composite Resins; C065742:Transbond; D017438:Bisphenol A-Glycidyl Methacrylate
keywords: Adhesives; Bond strength; Orthodontic brackets; Saliva