Objective: We evaluated the effects of internal bleaching on
the adhesion of glass-fiber posts (GFPs) luted with different resin cements. Methods: Forty extracted human single-root teeth were endodontically
treated and divided into four groups (n=10): G1- conventional resin cement (CRC);
G2- self-adhesive resin cement (SARC); G3- bleaching + CRC; and G4- bleaching +
SARC. Specimens were sectioned transversally into three slices to perform the
push-out test at the coronal, middle and apical regions of the root canals. Data
were analyzed using analysis of variance and Tukey's test (p<0.05).Results:The push-out bond strength of GFPs luted with
SARC after bleaching (G4) was significantly lower than that of the other groups
(p<0.001). We found no statistically significant differences in push-out
bond strength among the other groups. Significance: Internal
bleaching reduced the adhesion of GFPs luted with SARC. The adhesion of GFPs
luted with CRC was not decreased after bleaching.
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Open-Access License: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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