title: Three-dimensional localization of impacted canines and root resorption assessment using cone beam computed tomography.
abstract: The purpose of this study was to develop a new way to localize the impacted canines from three dimensions and to investigate the root resorption of the adjacent teeth by using cone beam computed tomography (CBCT). Forty-six patients undergoing orthodontic treatments and having impacted canines in Tongji Hospital were examined. The images of CBCT scans were obtained from KaVo 3D exam vision. Angular and linear measurements of the cusp tip and root apex according to the three planes (mid-sagittal, occlusal and frontal) have been taken using the cephalometric tool of the InVivo Dental Anatomage Version 5.1.10. The measurements of the angular and linear coordinates of the maxillary and mandibular canines were obtained. Using this technique the operators could envision the location of the impacted canine according to the three clinical planes. Adjacent teeth root resorption of 28.26 % was in the upper lateral incisors while 17.39% in upper central incisors, but no lower root resorption was found in our samples. Accurate and reliable localization of the impacted canines could be obtained from the novel analysis system, which offers a better surgical and orthodontic treatment for the patients with impacted canines.
authors.affiliation: Department of Orthodontics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
authors.forename: Eyad
authors.initials: E
authors.lastname: Almuhtaseb
authors.affiliation: Department of Orthodontics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China. maojing@mail.hust.edu.cn.
authors.forename: Jing
authors.initials: J
authors.lastname: Mao
authors.affiliation: Department of Orthodontics, London Dental School, London, UK.
authors.forename: Derek
authors.initials: D
authors.lastname: Mahony
authors.affiliation: Ministry of Health, Riyadh, Kingdom of Saudi Arabia.
authors.forename: Rawan
authors.initials: R
authors.lastname: Bader
authors.affiliation: Department of Orthodontics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
authors.forename: Zhi-Xing
authors.initials: ZX
authors.lastname: Zhang
mesh_terms: D000293:Adolescent; D000328:Adult; D002508:Cephalometry / Q000379:methods; D002648:Child; D054893:Cone-Beam Computed Tomography / Q000379:methods*; D003481:Cuspid / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods*; D007180:Incisor / Q000000981:diagnostic imaging; D008297:Male; D008437:Maxilla / Q000000981:diagnostic imaging; D015203:Reproducibility of Results; D012391:Root Resorption / Q000000981:diagnostic imaging*; D014095:Tooth, Impacted / Q000000981:diagnostic imaging*; D055815:Young Adult