title: Effect of root canal sealer and artificial accelerated aging on ﬁbreglass post bond strength to intraradicular dentin.
abstract: OBJECTIVE
  To evaluate the effect of root canal sealers (RCS) and specimen aging on the bond strength of fibre posts to bovine intraradicular dentin.
  
  
  METHODS
  80 teeth were used according the groups - Sealapextm, Sealer 26®, AH Plus® and specimens aging - test with no aging and with aging. The canals prepared were ﬁlled using one of each RCS. The posts were cemented. Roots were cross-sectioned to obtain two slices of each third. Samples were submitted to push-out test. Failure mode was evaluated under a confocal microscope. The data were analysed by ANOVA, Tukey's, and Dunnet tests (α = 0.05).
  
  
  RESULTS
  No signiﬁcant difference was detected among RCS. Aged control presented higher bond strength than immediate control. The aging did not result significant difference. Adhesive cement-dentin failure was prevalent in all groups.
  
  
  CONCLUSIONS
  RCS interfered negatively with bonding of fibreglass posts cemented with self-adhesive resin cement to intraradicular dentin. Key words:Fibreglass post, bond strength, root dentin, endodontic sealer, aging.
authors.affiliation: DDS, MSc, PhD. Department of Stomatologic Sciences, School of Dentistry, Federal University of Goiás, GO, Brazil.
authors.forename: Fernanda-Ribeiro
authors.initials: FR
authors.lastname: Santana
authors.affiliation: DDS, MSc, PhD. Operative Dentistry and Dental Materials Department, School of Dentistry, Federal University of Uberlândia, Uberlândia, MG, Brazil.
authors.forename: Carlos-José
authors.initials: CJ
authors.lastname: Soares
authors.affiliation: DDS, MSc, PhD, Post-graduate student. School of Dentistry, Federal University of Uberlândia, MG, Brazil.
authors.forename: Josemar-Martins
authors.initials: JM
authors.lastname: Ferreira
authors.affiliation: DDS, MSc, Post-graduate student. School of Dentistry, Federal University of Uberlândia, MG, Brazil.
authors.forename: Andréa-Dolores-Correia-Miranda
authors.initials: AD
authors.lastname: Valdivi
authors.affiliation: DDS, MSc, PhD. Department of Prevention and Oral Rehabilitation, School of Dentistry, Federal University of Goiás, GO, Brazil.
authors.forename: João-Batista-de
authors.initials: JB
authors.lastname: Souza
authors.affiliation: DDS, MSc, PhD. Department of Stomatologic Sciences, School of Dentistry, Federal University of Goiás, GO, Brazil.
authors.forename: Carlos
authors.initials: C
authors.lastname: Estrela