THE AIM OF THIS BOOK IS TO HIGHLIGHTEN THE ROLE OF MTA IN REPAIR OF FURCAL PERFORATIONS. THE SUCCESS OF ROOT CANAL TREATMENT DEPENDS ON ACHIEVING THE THREE DIMENSIONAL SEAL. PERFORATIONS CAN EFFECT THE RESULTS SO REPAIR OF THESE IS AN UTMOST IMPORTANT STEP. THE MATERIAL CHOICE, TIME ETC. SHOULD BE CONSIDERED BEFORE THIS PROCEDURE. THIS RESEARCH WILL BE IN BENEFIT TO GENERAL DENTISTS ESPECIALLY THOSE PRACTICISING ENDODONTIC THERAPIES. SO THE PAST, PRESENT AND FUTURE STUDENTS AS WELL AS DENTISTS CAN IMPLICATE THE RESEARCH RESULTS IN DAY TO DAY PRACTICE AND PROVIDE THE PATIENTS WITH QUALITY TREATMENT.