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Effect of Root Canal Sealers on Bond Strength of Fiber Posts to Root Dentin Cemented after one Week or six Months

Lucas Ruiz, Giovana Mongruel Gomes, Bruna Bittencourt, Fabricio Rutz da Silva, Osnara Maria Mongruel Gomes, Julio Cezar Chidoski Filho, Abraham Lincoln Calixto
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Abstract

Eugenol-based root canal sealers (RCS) have been widely used by clinicians; however, their effect on resinous materials is still questionable. The objective of this study was to evaluate the influence of RCS at 1 week and 6 months’ post obturation on the bond strength (BS) of glass fiber posts (GFP) to root dentin, using conventional and self-adhesive cementation systems (CS). The roots of 56 extracted human canines, were divided in eight groups (n=7) according to the combination of the following factors: RCS (with or without eugenol-Endofill and Sealer 26, respectively), storage period post obturation and prior GFP cementation (1 week and 6 months) and cementation systems (Variolink II - conventional resin cement or RelyX U200-self-adhesive resin cement). After one week, the specimens were transversely sectioned into six 1-mm-thick disks and were subjected to the push out BS test. The data were subjected to 3-way ANOVA and Tukey’s tests (α=0.05). The BS were not affected by the RCS, neither the CS (P>0.05). Just the period post obturation showed statistically significant differences (P£0.05), where the GFP cemented 6 months after the endodontic treatment showed higher values than those cemented 1 week after it.

Keywords: Cementation; Dentin; Push-out Bond Strength; Resin Cements; Zinc Oxide Eugenol Cement




DOI: https://doi.org/10.22037/iej.v1i1.17998

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