Effect of different endodontic sealers on push-out bond strength of fiber posts

Brazilian Journal of Oral Sciences

Kiana Ghanadan¹  Sajjad Ashnagar¹  Ladan Ranjbar Omrani¹  Mansooreh Mirzaee¹ 

关键词: root canal filling materials;    dentin;    dental pulp;    tooth;    root canal obturation;   

DOI  :  10.1590/1677-3225v14n2a13

来源: SciELO

【 摘 要 】

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.

【 授权许可】

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