2022 年 13 巻 1 号 p. 46-50
A patient was evaluated by an endodontic expert for evaluation of tooth #36. The patient complained of a draining sinus tract in spite of receiving non-surgical endodontic therapy. Pre-operative assessment disclosed a large peri-radicular radiolucency around the root. A diagnosis of Previous Endodontic Therapy with Chronic Periradicular Abcess was formulated. Optimal management of the case and use of modern technology is presented in this case report.