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

A Micro-Computed Tomography Study of the Root Canal Morphology of Mandibular First Premolars in an Emirati Population

ObjectiveTo investigate variations in the root canal morphology of mandibular first premolars in a population from the United Arab Emirates using micro-computed tomography (micro-CT) and conventional radiography.Materials and methodsThree-dimensional images of 50 extracted human mandibular first premolars were produced using a micro-CT scanner, and conventional radiography was also used to record the number of roots, the root canal system configuration, the presence of a C-shaped canal system and lateral canals, intercanal communications, and the number and location of apical foramina. The interpretations of micro-CT and conventional radiography were statistically analyzed using Fisher's exact test.ResultsVariable root canal configurations based on Vertucci's classification were observed in the teeth (i.e., types I, III, IV, V, and VII). The examined teeth exhibited the following 2 additional root canal configurations, which did not fit Vertucci's classification: type 1-2-3 and type 1-3. A C-shaped canal configuration was present in 14 (28%) cases, and lateral canals were present in 22 (44%) cases. Apical deltas were found in 25 (50%) cases, intercanal communications were seen in 6 (12%) cases, and apical loops were seen in 2 (4%) of the samples. Micro-CT and X-ray imaging identified 39 (78%) and 34 (68%) apical foramina, respectively. A single apical foramen was detected in 33 (66%) samples, and 2 or 3 apical foramina were detected in 14 (28 %) and 3 (6%) samples, respectively. In 18.5 (37%) samples the apical foramina were located centrally, and in 31 (62%) they were located laterally.ConclusionA complex morphology of the mandibular first premolars was observed with a high prevalence of multiple root canal systems

A Micro-Computed Tomography Study of the Root Canal Morphology of Mandibular First Premolars in an Emirati Population

ObjectiveTo investigate variations in the root canal morphology of mandibular first premolars in a population from the United Arab Emirates using micro-computed tomography (micro-CT) and conventional radiography.Materials and methodsThree-dimensional images of 50 extracted human mandibular first premolars were produced using a micro-CT scanner, and conventional radiography was also used to record the number of roots, the root canal system configuration, the presence of a C-shaped canal system and lateral canals, intercanal communications, and the number and location of apical foramina. The interpretations of micro-CT and conventional radiography were statistically analyzed using Fisher's exact test.ResultsVariable root canal configurations based on Vertucci's classification were observed in the teeth (i.e., types I, III, IV, V, and VII). The examined teeth exhibited the following 2 additional root canal configurations, which did not fit Vertucci's classification: type 1-2-3 and type 1-3. A C-shaped canal configuration was present in 14 (28%) cases, and lateral canals were present in 22 (44%) cases. Apical deltas were found in 25 (50%) cases, intercanal communications were seen in 6 (12%) cases, and apical loops were seen in 2 (4%) of the samples. Micro-CT and X-ray imaging identified 39 (78%) and 34 (68%) apical foramina, respectively. A single apical foramen was detected in 33 (66%) samples, and 2 or 3 apical foramina were detected in 14 (28 %) and 3 (6%) samples, respectively. In 18.5 (37%) samples the apical foramina were located centrally, and in 31 (62%) they were located laterally.ConclusionA complex morphology of the mandibular first premolars was observed with a high prevalence of multiple root canal systems