Bond Strength of New Fiber Post-system (Rebilda GT)

AIM: The aim of this in vitro study is to determine the push-out bond strength bundle glass fiber post (Rebilda GT) and tapered post). MATERIALS AND METHODS: Twenty freshly extracted human single rooted premolar teeth were used, all endodontically treated, after 24 h from obturation gutta-percha removed leaving 5 mm apically ensure clinically acceptable apical seal. Finally, canals flushed with 2 ml NaOcl 5.25% distilled water, respectively, then dried using paper points. roots divided randomly into two sets ten for each group according post-type. Group A: Rebilda posts used. B: GT inserted manufacturer instructions. All specimens stored 72 an incubator. Slices thickness cut at different levels (cervical, middle, thirds), was determined universal testing machine a speed 0.5 mm/min. RESULTS: One-way analysis variance Tukey HSD tests showed that (bundle fiber) had higher than regions. (p < 0.05), also cervical area both groups middle areas, respectively. CONCLUSIONS: taper regions (apical, cervical). region thirds.