title: Three-year follow-up results for non-surgical root canal therapy of idiopathic external root resorption on a maxillary canine with MTA: a case report.
abstract: External root resorption (ERR) is an uncommon and intractable disease. Treatment alternatives are case-dependant and aim for the repair of the resorptive lesion and long-term retention of the tooth. A forty-year-old Asian female was diagnosed with idiopathic ERR on tooth #11 (the left maxillary canine) by CBCT. Non-surgical root canal therapy was completed with the aid of an operating microscope. The apical third of the root canal was filled with warm gutta-percha and the resorption defect was filled with mineral trioxide aggregate (MTA). The periapical radiographs were taken immediately after operation, one-month follow-up, six-month follow-up and three-year follow-up, respectively. Clinically, the canine was asymptomatic, and no evidence of any further resorption was found. The six-month follow-up radiograph showed initial healing of the bony lesion, while the three-year follow-up radiograph manifested almost complete healing. MTA can be a superior material to be successfully used in the non-surgical treatment of ERR. CBCT is very useful for evaluating the true nature and severity of absorption lesions in root resorption. It is the first complete case report from China about non-surgical treatment of severe ERR along with a relatively long term follow-up.
authors.affiliation: Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology 1277 Jiefang Ave, Wuhan, Hubei, 430022, China.
authors.forename: Zheng
authors.initials: Z
authors.lastname: Huang
authors.affiliation: Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology 1277 Jiefang Ave, Wuhan, Hubei, 430022, China.
authors.forename: Li-Li
authors.initials: LL
authors.lastname: Chen
authors.affiliation: The Center for Biomedical Research, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology 1095 Jiefang Ave, Wuhan, Hubei, 430030, China.
authors.forename: Cong-Yi
authors.initials: CY
authors.lastname: Wang
authors.affiliation: Department of Stomatology, The First Hospital of Wuhan Wuhan, Hubei, 430022, China.
authors.forename: Lin
authors.initials: L
authors.lastname: Dai
authors.affiliation: Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology 1277 Jiefang Ave, Wuhan, Hubei, 430022, China.
authors.forename: Bo
authors.initials: B
authors.lastname: Cheng
authors.affiliation: Department of Stomatology, The First Hospital of Wuhan Wuhan, Hubei, 430022, China.
authors.forename: Jun
authors.initials: J
authors.lastname: Sun
authors.affiliation: Department of Restorative Dentistry, Indiana University School of Dentistry Indianapolis, IN 46202, USA.
authors.forename: Jun
authors.initials: J
authors.lastname: Sun
mesh_terms: D000328:Adult; D017607:Aluminum Compounds / Q000627:therapeutic use*; D017610:Calcium Compounds / Q000627:therapeutic use*; D004338:Drug Combinations; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D010087:Oxides / Q000627:therapeutic use*; D011859:Radiography; D012390:Root Canal Therapy / Q000379:methods*; D012391:Root Resorption / Q000000981:diagnostic imaging / Q000628:therapy*; D017640:Silicates / Q000627:therapeutic use*
chemical_list: D017607:Aluminum Compounds; D017610:Calcium Compounds; D004338:Drug Combinations; D010087:Oxides; D017640:Silicates; C086631:mineral trioxide aggregate
keywords: CBCT; External root resorption; MTA; canine; non-surgical root canal therapy