مقاومة تصاميم مختلفة من الاوتاد الجذرية الجاهزة الملصقة باسمنت الريزين 21 Panavia لقوى الانحناء (دراسة مخبرية)

Background & Objective: Ready made post design plays an important role with resin cement ability on post retention in to the root canal. While the paraposts are the most retentive. To compare the resistance of serrated Para post, tapered-smooth, and threaded para posts, cemented with panivia21 to transverse load. Material & Methods: a specimen of 36 posts (12 serrated Para post, 12 tapered-smooth,12 threaded para posts), cemented with panivia21) into 36 cut (lower first premolar) roots at Enamo- Cementum junction at (7m.m) Length of each, and tested by WOHLER fatigue testing machine applying 180g weight.0ne way ANOVA was used as p< 0.05. Results: Cycling no., log no., SD were recorded since P= 0.02 using ANOVA revels that was significant differences and threaded para posts were the best in retention, followed by serrated para posts, and smooth tapered were the lowest.