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Brazilian Journal of Oral Sciences
Piracicaba Dental School - UNICAMP
EISSN:
Vol. 14, No. 2, 2015, pp. 165-170
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Bioline Code: os15028
Full paper language: English
Document type: Research Article
Document available free of charge
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Brazilian Journal of Oral Sciences, Vol. 14, No. 2, 2015, pp. 165-170
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Effect of different endodontic sealers on push-out bond strength of fiber posts
Ghanadan, Kiana; Ashnagar, Sajjad; Omrani, Ladan Ranjbar & Mirzaee, Mansooreh
Abstract
Despite the increasing demand for fiber-reinforced composite (FRC) posts, their bonding to root
canals is still subject to debate. Endodontic sealers may affect the bond strength between fiber
posts and root canal dentin. Aim: To compare the effects of different sealers on fiber post bond
strength. Methods: Sixty teeth were divided into 4 groups according to obturation method: GI,
gutta-percha without any sealers; GII, gutta-percha and AH26 resin-based sealer; GIII, RealSeal
point and RealSeal resin-based sealer, GIV, Guttaflow. Fiber posts were cemented into root
canals. Specimens were sectioned, and the bond strength was measured in the middle area. The
failure mode was evaluated. Data were analyzed by one-way ANOVA and post hoc test. Results:
The highest bond strength was observed in the control group (2.95±1.12), and the least was in
the Guttaflow group (1.15±0.78). There was a significant difference between bond strengths of
the control and Guttaflow groups and between AH26 and Guttaflow groups (p<0.05). The failure
mode was mainly adhesive between dentin and resin cement in all groups. Conclusions:
Sealers may have a negative effect on the bond strength of fiber posts to root canal dentin.
Keywords
root canal filling materials; dentin; dental pulp; tooth; root canal obturation
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