title: Use of Cone-beam Computed Tomography during Retreatment of a 2-rooted Maxillary Central Incisor: Case Report of a Complex Diagnosis and Treatment.
abstract: A double-rooted maxillary incisor is an extremely rare anatomic variation. Only a few case reports describe this abnormal anatomy. In recent decades, cone-beam computed tomographic (CBCT) imaging has become more common for endodontic purposes. This case report describes the retreatment of double-rooted maxillary central incisors using CBCT imaging. In 2012, a 20-year-old man was referred to our department because of asymptomatic periapical lesions in teeth #8, #9, and #10. During the evaluation of a periapical radiograph, a rare anatomic variation, in the form of an additional root of tooth #9, was detected, and it was impossible to decide about the source of the lesion between teeth #9 and #10. During retreatment, after gutta-percha removal, CBCT imaging was performed; this allowed proper treatment of the additional root and a final diagnosis of normal periapical tissue of tooth #10 with no treatment needed. The 18-month follow-up revealed a healing lesion in tooth #9 and normal periapical tissue in tooth #10. During the treatment of teeth with an anatomic variation, CBCT imaging can serve as an auxiliary tool for 3-dimensional evaluation that influences treatment steps and techniques. CBCT scanning can be very useful in assessing the actual location of a periapical lesion, which influences diagnosis and treatment planning.
authors.affiliation: Department of Endodontics, Israel Defense Forces, Medical Corps, Tel Hashomer, Israel. Electronic address: avilevin@gmail.com.
authors.forename: Avi
authors.initials: A
authors.lastname: Levin
authors.affiliation: Department of Endodontics, Israel Defense Forces, Medical Corps, Tel Hashomer, Israel.
authors.forename: Avi
authors.initials: A
authors.lastname: Shemesh
authors.affiliation: Department of Endodontics, Israel Defense Forces, Medical Corps, Tel Hashomer, Israel.
authors.forename: Vered
authors.initials: V
authors.lastname: Katzenell
authors.affiliation: Department of Endodontics, Israel Defense Forces, Medical Corps, Tel Hashomer, Israel.
authors.forename: Ayelet
authors.initials: A
authors.lastname: Gottlieb
authors.affiliation: Department of Endodontics, Israel Defense Forces, Medical Corps, Tel Hashomer, Israel.
authors.forename: Joe
authors.initials: J
authors.lastname: Ben Itzhak
authors.affiliation: Department of Endodontics, Israel Defense Forces, Medical Corps, Tel Hashomer, Israel.
authors.forename: Michael
authors.initials: M
authors.lastname: Solomonov
mesh_terms: D054893:Cone-Beam Computed Tomography; D006801:Humans; D007180:Incisor / Q000033:anatomy & histology* / Q000000981:diagnostic imaging*; D008297:Male; D008437:Maxilla; D010485:Periapical Periodontitis / Q000175:diagnosis / Q000628:therapy*; D019233:Retreatment; D018915:Root Canal Preparation / Q000379:methods*; D014092:Tooth Root / Q000033:anatomy & histology* / Q000000981:diagnostic imaging*; D055815:Young Adult
keywords: Cone-beam computed tomography; double rooted; retreatment; upper central incisor