Repair of a furcation perforation with mineral trioxide aggregate: A case report with 6 year follow-ups

Background and aim: one of the most common reasons for the failure of endodontic treatment is root perforation.perforations might occur due to carious lesions, tooth resorption or they might be iatrogenic during endodontictreatment or in most cases they might occur during post space preparation.case report: a 31-year-old female patient presented with a complaint of chronic pain on tooth #30 during last 6months and sensitive to bite since a few days ago. there was a mild swelling on the gingival tissue in the furcation areain the intraoral examination, with a narrow strip-shaped pocket measuring 3 mm in depth. radiographic examinationrevealed an incomplete root canal treatment of the tooth. a prefabricated post had been placed in the distal root, with anincorrect path toward the furcation area. there was a small radiolucency in the furcation area and a pronouncedradiolucency around the mesial root of the tooth. after removal of the post, hemorrhage was observed in the furcationarea. the diameter of the perforation was approximately 1 mm. the perforated area was sealed with pro root mineraltrioxide aggregate (mta). in the next session when setting of mta was evaluated and confirmed, retreatment of thetooth was done. after 6 months, no swelling or sensitivity was observed and after 6 year follow-ups radiographicexamination revealed that the lesion had almost resolved.conclusion: in the present case, the lesion of furcation perforation was small in size, but the time interval between theoccurrence of perforation and the repair procedure was long, success was achieved due to the control of the asepticconditions, control of hemorrhage and proper placement of the repair material, which was confirmed in the 6 yearfollow-ups.