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Objective: Investigate the influence of simplified chemical moisture control protocols on the bond durability of fiber posts through an evaluation of push-out bond strength. Materials and methods: Forty-eight roots from single-rooted human teeth were treated endodontically and randomly distributed among groups with different dehydration protocols (n = 8): simplified ethanol wet bonding/100 (100G) – irrigation with 100% ethanol; simplified ethanol wet bonding/50 (50G) – irrigation with 50% ethanol; wet bonding (WG) – removal of excess water with paper. Fiber posts were cemented with the Ambar/Allcem (FGM) luting system, following the manufacturer's instructions. The bonded roots were cut cross-sectionally, producing slices 1 mm in thickness. The specimens were tested for push-out bond strength after 24 h (T1) and 12 months (T2) of storage. Specimens from each group were also processed for the nanoleakage analysis. The statistical analysis was performed considering a 5% significance level. Results: Significant differences were found among groups at T1 (p = 0.01) and T2 (p = 0.007). Bond stability in 100G was maintained after one year of aging, demonstrating greater bond strength (9.51 ± 3.28) in comparison to the other groups, with no significant differences in the analysis of the roots by thirds. The nanoleakage results confirmed that the simplified 100% ethanol wet bonding method improved the quality of the interface. Conclusions: Simplified 100% ethanol wet bonding contributes to the bond stability of the fiberglass posts on root dentin.

EFFECT OF SIMPLIFIED CHEMICAL MOISTURE CONTROL PROTOCOLS ON THE BOND DURABILITY OF FIBER POSTS CEMENTED TO ROOT DENTIN