The aim of the study was to evaluate clinically and radiographically the periapical healing when MTA was used as a retrograde root end filling. Most endodontic failure occurs as a result of leakage of irritants from pathologically involved root canals. In cases where orthograde root canal cannot be done as in cases of open apex, or persistant periradicular infections, an endodontic surgery and retrograde filling is done. MTA was chosen as the root end material of choice as it helps in the growth of cement oblast like cells. Cementum deposition is essential for the regeneration of periodontal apparatus

Keywords: MTA, Periapical radiolucency, Root end filling, Pain, Swelling, Mobility.

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Dr Elizabeth Prabha James

Associate Professor, Department of Conservative Dentistry and Endodontics, Govt. Dental College, Kozhikode