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CLINICAL STUDY
Year : 2011  |  Volume : 1  |  Issue : 5  |  Page : 255-259

Effect of surface treatments on push-out strength of three glass fiber posts: An in vitro study


1 Senior Lecturer, Dept. of Conservative and Endodontics, Sree Balaji Dental College and Hospital, Chennai, India
2 Professor, Dept. of Conservative and Endodontics, Ragas Dental College and Hospital, Chennai, India

Correspondence Address:
Dr. AVK Narene
8/4, East Tank Street, Thiruvottiyur, Chennai - 600 019
India
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Source of Support: None, Conflict of Interest: None


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This in vitro study evaluated whether surface treatment for glass fiber posts has an effect on the push-out strength bonded to human root dentin. Fifty freshly extracted maxillary central incisors were endodontically-treated and post space preparation was done. A total of 50 FRC Postec, randomly divided into five groups (10 teeth each) were subjected to four different surface treatments: Silane only (II), Cojet and Silane (III), 10% sodium ethoxide and silane (IV) and 10% hydrogen peroxide (V). The control group (I) did not receive any surface treatment. The root canals were treated with 37% phosphoric acid and Excite DSC and all the posts were luted with Variolink II dual cure resin. A push-out test was done to measure bond strength at different levels of the root. Data were analyzed with one-way ANOVA and post-hoc Tukey HSD test. The results showed no significant differences between control group and silane treatment. Cojet and Silane (III) showed the highest bond strength of 15.50 ΁ 4.2 MPa, which was statistically significant than all the other group (p < 0.001). The coronal segment showed the highest mean bond strength of 13.74 ΁ 6.1 MPa (p < 0.001).


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