Safaa M. Mohamed , Hayam Y. Hassan , Marwa M. Azab And Salma H. El Ashry,

ABSTRACT


Aim: Evaluate The Sealing Ability Of (Nano MTA, Biodentin And Fuji IX) Using Apical Bacterial Leakage Method With Two Different Techniques Of Root End Cavity Preparation Modern And Traditional Techniques After 1, 4 And 8 Weeks. Methods: Seventy Extracted Human Maxillary Anterior Teeth With Single Canal Were Distributed Into Two Equal Groups (30 Samples Each) According To Technique Of Root End Cavity Preparation Modern And Traditional Technique. 10 Teeth Were Used As Control (5 Roots Positive Group And 5 Roots Negative Group). The Main Groups Are Subdivided Into 3 Subgroups Corresponding To The Root End Filling Material Used, (Nano MTA, Biodentin And Fuji IX). Sealing Ability Was Assessed Using Enterococcus Faecalis (E. Faecalis) In A Double Chamber Leakage Model. Samples Were Monitored Weekly For Periods Of 1, 4 And 8 Weeks To Assess The Turbidity Of The Medium In Contact With The Lower Coronal Portion Of The Root Segment.

Results: Nano MTA And Biodentin Showed Low Bacterial Leakage With Modern Technique With No Statistically Significant Differences. But There Was Statistically Highly Significant Differences Found Between Fuji IX And Both Nano MTA And Biodentin (P � 0.05). Fuji IX Showed Maximum Leakage Value. Conclusion: Nano MTA And Biodentine Used With Modern Technique Showed A Significantly Better Sealing Ability. Microleakage Increased By Time With All Tested Materials