Extensive external localized idiopathic root resorption - An unusual case report

Abstract

External root resorption of permanent teeth is a multifactorial process. This article presents an unusual case of localized idiopathic extensive external root resorption involving the whole mesial root of the right mandibular first molar in a 42-year-old female patient. No significant systemic, dental, or familial findings could be identified as a possible cause. The cause of the resorption remained unclear. The tooth was managed by nonsurgical endodontic treatment using mineral trioxide aggregate to seal resorbed canals. A 5-year follow-up revealed satisfactory results clinically and radiographically with mobility within physiological limits.

Keywords: Extensive; external root resorption; idiopathic; localized; mineral trioxide aggregate.

Figure 1

(a) Clinical picture of tooth 46 showing attrition with cervical abfraction. (b) Preoperative intraoral periapical radiograph of tooth 46. Extensive external resorption of mesial root with bone replacement in resorbed area pointed out by arrow. (c) Clinical picture of tooth 46 showing access opening (MB – mesiobuccal canal; ML – mesiolingual canal; D – distal canal). (d) Orthopantomogram confirming localized idiopathic apical resorption of tooth 46 with no other teeth involved. (e) Postobturation intraoral periapical radiograph of tooth 46. (f) Five-year follow-up radiograph of tooth 46 showing no progression of root resorption