title: Extracanal invasive root resorption: a perplexing oddity.
abstract: Extracanal invasive resorption originates in the periodontal ligament, making it difficult to determine during treatment whether all resorption cells have been eliminated. Consequently, periodontal defects and recurrence of the process are quite common. This process can occur supraosseously or subosseously and treatment may or may not include endodontic therapy. The pathogenesis, diagnosis, and treatment modalities are presented along with a clinical case with an 18-month follow-up as an example of the challenges associated with treatment of this lesion.
authors.affiliation: Department of Endodontics, College of Dentistry, University of Oklahoma Health Sciences Center, Oklahoma City, USA.
authors.forename: Fred W
authors.initials: FW
authors.lastname: Benenati
mesh_terms: D003786:Dental Pulp Cavity / Q000000981:diagnostic imaging / Q000503:physiopathology; D003793:Dental Restoration, Permanent; D005500:Follow-Up Studies; D006801:Humans; D010513:Periodontal Ligament / Q000000981:diagnostic imaging / Q000503:physiopathology; D011379:Prognosis; D011859:Radiography; D012008:Recurrence; D012390:Root Canal Therapy; D012391:Root Resorption / Q000145:classification* / Q000000981:diagnostic imaging / Q000209:etiology / Q000628:therapy