Nehal Y. Abdelati, Hanaa M. Shalan, Salwa M. Awad And Ibrahim H. Elkalla,

ABSTRACT
Background: Furcal Perforation Is A Technical Problems Occur Occasionally During Endodontic Treatment, Which Have The Worst Prognosis
Objectives: The Purpose Of This Study Was To Investigate The Histopathology Of Periodontium To Experimentally Induced Furcal Perforations In Dogs? Primary Teeth Repaired By Mineral Trioxide Aggregate (MTA) And Biodentine. Methods: The Design Of The Study Was Split Mouth Design. This Study Was Carried Out On 96 Primary Molars Of 12 Puppy Dogs, These Teeth Were Intentionally Perforated At The Furcation Area And Then Divided Into 2 Experimental Groups And 2 Control Groups. The Experimental Groups Were Sealed With MTA And Biodentine Respectively And The Control Groups Were Perforated But Not Sealed. Then The Histopathological Findings And Severity Of Inflammation Were Evaluated At The Perforated Areas At One, Two And Three Months Respectively. Data Were Statistically Analyzed To Test The Significance Of Difference Between Groups Using The Computer Program SPSS (Statistical Package For Social Science) Version 17.0.

Results: The Results Showed That There Was No Significant Difference Between MTA Group And Biodentine Group At Each Follow Up Period, Also There Was No Significant Difference For Both Groups When Observed For The Three Different Follow Up Periods, However Significant Difference Was Observed Between Experimental Groups (MTA And Biodentine) And Their Control Groups. Conclusion: Biodentine Can Be Used For Furcal Perforation Repair In Primary Teeth And Give The Same Favorable Results As MTA.