title: The influence of different cements on the pull-out bond strength of fiber posts.
abstract: BACKGROUND
  Glass fiber posts are commonly used to provide adequate support and retention for the restoration of endodontically treated teeth, but their resistance to dislodgement depends on their adhesion to root dentin.
  
  
  OBJECTIVE
  The purpose of this study was to assess the effect of cement type on the pull-out bond strength of fiber posts.
  
  
  METHODS
  Seventy maxillary canines were endodontically treated and then divided into 7 groups according to the cement used for fiber post cementation as follows (n = 10): RelyX Unicem, BisCem, RelyX Luting 2, RelyX ARC, Panavia F, Enforce, and Allcem. The specimens were subjected to a pull-out bond strength test in a universal testing machine at a crosshead speed of 0.5 mm/min. The results, in newtons, were analyzed with 1-way ANOVA and the Tukey post hoc test (α = .05).
  
  
  RESULTS
  RelyX Unicem (472.3 ± 8.9 N), BisCem (506.6 ± 9.2 N), RelyX ARC (498.0 ± 8.2 N), Panavia F (502.3 ± 7.0 N), and Allcem (470.0 ± 11.3 N) presented significantly higher bond strength than RelyX Luting 2 (241.8 ± 9.70 N) and Enforce (309.5 ± 6.3 N) cements (mean ± SD; P < .05).
  
  
  CONCLUSIONS
  Except for Enforce, all resin cements produced pull-out bond strength values twice that of resin modified glass ionomer cement. However, all cements promoted adequate retention to fiber posts to withstand functional loads.
authors.affiliation: Associate Clinical Professor and Research Coordinator, Department of Prosthodontics, Dental School, University of Southern Santa Catarina, Tubarão, Santa Catarina, Brazil. Electronic address: jeffripe@rocketmail.com.
authors.forename: Jefferson Ricardo
authors.initials: JR
authors.lastname: Pereira
authors.affiliation: Doctoral student, Department of Conservative Dentistry, Rio Grande do Sul Federal University, Porto Alegre, Brazil.
authors.forename: Ricardo Abreu
authors.initials: RA
authors.lastname: da Rosa
authors.affiliation: Professor, Department of Prosthodontics, Bauru Dental School, University of São Paulo, Sao Paulo, Brazil.
authors.forename: Accácio Lins
authors.initials: AL
authors.lastname: do Valle
authors.affiliation: Associate Clinical Professor, Department of Prosthodontics, University of Southern Santa Catarina, Tubarão, Santa Catarina, Brazil.
authors.forename: Janaina Salomon
authors.initials: JS
authors.lastname: Ghizoni
authors.affiliation: Associate Clinical Professor and Research Coordinator, Department of Conservative Dentistry, Rio Grande do Sul Federal University, Porto Alegre, Brazil.
authors.forename: Marcus Vinicius Reis
authors.initials: MV
authors.lastname: Só
authors.affiliation: Private practice, Itu, SP, Brazil.
authors.forename: Fábio Kenji
authors.initials: FK
authors.lastname: Shiratori
mesh_terms: D017438:Bisphenol A-Glycidyl Methacrylate / Q000737:chemistry; D003188:Composite Resins / Q000737:chemistry; D001840:Dental Bonding; D003738:Dental Cements / Q000737:chemistry*; D003764:Dental Materials / Q000737:chemistry*; D003786:Dental Pulp Cavity / Q000648:ultrastructure; D003799:Dental Stress Analysis / Q000295:instrumentation; D003804:Dentin / Q000648:ultrastructure; D005898:Glass / Q000737:chemistry*; D005899:Glass Ionomer Cements / Q000737:chemistry; D006801:Humans; D008422:Materials Testing; D011092:Polyethylene Glycols / Q000737:chemistry; D011109:Polymethacrylic Acids / Q000737:chemistry; D011176:Post and Core Technique / Q000295:instrumentation*; D019279:Resin Cements / Q000737:chemistry; D018915:Root Canal Preparation / Q000379:methods; D055116:Self-Curing of Dental Resins; D013314:Stress, Mechanical; D013499:Surface Properties; D019553:Tooth, Nonvital / Q000628:therapy
chemical_list: C542562:BisCem cement; D003188:Composite Resins; D003738:Dental Cements; D003764:Dental Materials; C103503:EnForce-Sure Cure; D005899:Glass Ionomer Cements; C438843:Panavia-Fluoro; D011109:Polymethacrylic Acids; C483701:Rely X Unicem; C462240:RelyX ARC; D019279:Resin Cements; C084550:Vitremer; C009753:fiberglass; D011092:Polyethylene Glycols; D017438:Bisphenol A-Glycidyl Methacrylate