Perez, Bianca E. M. [UNESP]Barbosa, Silvia H. [UNESP]Melo, Renata M. [UNESP]Zamboni, Sandra C. [UNESP]Özcan, MutluValandro, Luiz FelipeBottino, Marco A. [UNESP]2014-05-272014-05-272006-11-01International Journal of Prosthodontics, v. 19, n. 6, p. 606-609, 2006.0893-2174http://hdl.handle.net/11449/69219This study aimed to evaluate the influence of cement thickness on the bond strength of a fiber-reinforced composite (FRC) post system to the root dentin. Eighteen single-rooted human teeth were decoronated (length: 16 mm), the canals were prepared, and the specimens were randomly allocated to 2 groups (n = 9): group 1 (low cement thickness), in which size 3 FRC posts were cemented using adhesive plus resin cement; and group 2 (high cement thickness), in which size 1 FRC posts were cemented as in group 1. Specimens were sectioned, producing 5 samples (thickness: 1.5 mm). For cement thickness evaluation, photographs of the samples were taken using an optical microscope, and the images were analyzed. Each sample was tested in push-out, and data were statistically analyzed. Bond strengths of groups 1 and 2 did not show significant differences (P = .558), but the cement thicknesses for these groups were significantly different (P < .0001). The increase in cement thickness did not significantly affect the bond strength (r2 = 0.1389, P = .936). Increased cement thickness surrounding the FRC post did not impair the bond strength.606-609engAll Bond 2dentin bonding agentDuo Linkphosphoric acidresin cementsilane derivativeclinical trialcontrolled studydental acid etchingdental bondingdental surgeryendodonticsmaterials testingmechanical stressrandomized controlled trialsurface propertytooth crowntooth pulpultrastructureDentin-Bonding AgentsArtigoWOS:000242363900013Acesso restrito2-s2.0-338456190549234456003563666