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External root resorption (ERR) is always pathological when observed in permanent dentition. By virtue of it's asymptomatic nature, ERR can go unnoticed severely compromising the longevity of the tooth causing it's unexpected premature loss .Therefore ,early detection is extremely crucial for successful management of ERR. The treatment modality for this condition varies as per the type and etiology of resorption. Non- surgical endodontic therapy can arrest the inflammatory root resorption & can help to regenerate the periapical tissues. This report deals with three cases of the external root resorption of varied etiology & types as well as their successful management. One year follow up demonstrated recovery of clinical & radiographic signs and symptoms in inflammatory resorption cases.