A micro CT study of root canal morphology of mandibular first premolars in an Emirati population

PLEASE NOTE: This work is protected by copyright. Downloading is restricted to the BU community: please click Download and log in with a valid BU account to access. If you are the author of this work and would like to make it publicly available, please contact [email protected] (MSD) --Boston University Institute for Dental Research and Education, Dubai, 2012 (Endodontics).Includes bibliographic references: leaves 70-89.Aim: to investigate the root canal system morphology of the mandibular 1st premolars in an Emirati population using micro computed tomography and conventional radiography. Methodology: Thirty extracted human adult mandibular first premolars were used in this study. The teeth were single-rooted with fully formed apices and had not been endodontically treated, free from caries and large defective restorations. The teeth were collected from Emirati citizens who were referred to various oral surgery clinics around United Arab Emirates. The teeth prepared for scanning using a skyScan micro CT scanner (SkyScan l 172 X-ray micro tomograph, Antwerp, Belgium) at a slice thickness of l l.94[Mu]m. The conventional radiographic images and three-dimensional images were produced by micro CT scanner analyzed independently to record the number of the root, root canals system configuration, presence of C-shaped canal, presence of lateral canals, intercanals communications, number and locations of the apical foramina. Result: 3-sample 10% show deep mesiolingual radicular groove. Variable root canal configurations according to vertucci’s classification were found in teeth as type 1 (70%), type III (6.7%), type V (13.3%) and type VII (3.3%). The examined teeth exhibited two additional canal configurations that did not fit Vertucci's classifications. Type (1-2-3) and type (1-3) and both with three separate apical foramina