title: Effect of resin cement system and root region on the push-out bond strength of a translucent fiber post.
abstract: OBJECTIVE
  This study evaluated the bond strength of luting systems for bonding glass fiber posts to root canal dentin. The hypothesis tested was that there are no differences in bond strength of glass fiber posts luted with different cement systems.
  
  
  METHODS
  Forty bovine incisors were randomly assigned to five different resin cement groups (n=8). After endodontic treatment and crown removal, translucent glass fiber posts were bonded into the root canal using five different luting protocols (self-cured cement and etch-and-rinse adhesive system; dual-cured cement and etch-and-rinse adhesive system; self-cured cement and self-etch adhesive system; dual-cured cement and self-etch adhesive system; and dual-cured self-adhesive cement). Push-out bond strength was evaluated at three different radicular levels: cervical, middle, and apical. The interface between resinous cement and the post was observed using a stereoscopic microscope.
  
  
  RESULTS
  Analysis of variance showed a statistically significant difference among the cements (p<0.05) and the root canal thirds (p<0.05). The self-adhesive resinous cement had lower values of retention.
  
  
  CONCLUSIONS
  The resin cements used with etch-and-rinse and self-etch adhesive systems seem to be adequate for glass fiber post cementation.
authors.affiliation: University Estadual Paulista UNESP, São Paulo, Brazil.
authors.forename: L R
authors.initials: LR
authors.lastname: Calixto
authors.forename: M C
authors.initials: MC
authors.lastname: Bandéca
authors.forename: V
authors.initials: V
authors.lastname: Clavijo
authors.forename: M F
authors.initials: MF
authors.lastname: Andrade
authors.forename: L Geraldo
authors.initials: LG
authors.lastname: Vaz
authors.forename: E A
authors.initials: EA
authors.lastname: Campos
mesh_terms: D000134:Acid Etching, Dental / Q000379:methods; D000818:Animals; D017438:Bisphenol A-Glycidyl Methacrylate / Q000737:chemistry; D001896:Boron Compounds / Q000737:chemistry; D002417:Cattle; D002484:Cementation / Q000379:methods; D003188:Composite Resins / Q000737:chemistry*; D001840:Dental Bonding; D003764:Dental Materials / Q000737:chemistry*; D017268:Dental Prosthesis Retention; D003786:Dental Pulp Cavity / Q000648:ultrastructure*; D003804:Dentin / Q000648:ultrastructure*; D017220:Dentin-Bonding Agents / Q000737:chemistry; D005898:Glass / Q000737:chemistry*; D008689:Methacrylates / Q000737:chemistry; D008768:Methylmethacrylates / Q000737:chemistry; D010756:Phosphoric Acids / Q000737:chemistry; D011092:Polyethylene Glycols / Q000737:chemistry; D011109:Polymethacrylic Acids / Q000737:chemistry; D011176:Post and Core Technique / Q000295:instrumentation*; D011897:Random Allocation; D019279:Resin Cements / Q000737:chemistry*; D055116:Self-Curing of Dental Resins / Q000379:methods; D013314:Stress, Mechanical; D013499:Surface Properties; D013997:Time Factors; D019227:Tooth Apex / Q000648:ultrastructure; D014867:Water / Q000737:chemistry
chemical_list: D001896:Boron Compounds; D003188:Composite Resins; D003764:Dental Materials; D017220:Dentin-Bonding Agents; D008689:Methacrylates; D008768:Methylmethacrylates; C438843:Panavia-Fluoro; D010756:Phosphoric Acids; D011109:Polymethacrylic Acids; C528569:Rely-X; C462240:RelyX ARC; D019279:Resin Cements; C084018:Scotchbond Multi-Purpose; C009753:fiberglass; C502351:multilink adhesive system; D014867:Water; D011092:Polyethylene Glycols; D017438:Bisphenol A-Glycidyl Methacrylate; C049495:Super-bond; C030242:phosphoric acid