Root and canal morphology of maxillary premolar teeth in an Egyptian subpopulation using two classification systems: a cone beam computed tomography study

Saber, Shehab El Din Mohamed and Ahmed, Magdy H.M. and Obeid, Maram and Ahmed, Hany Mohamed Aly (2019) Root and canal morphology of maxillary premolar teeth in an Egyptian subpopulation using two classification systems: a cone beam computed tomography study. International Endodontic Journal, 52 (3). pp. 267-278. ISSN 0143-2885

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Official URL: https://doi.org/10.1111/iej.13016

Abstract

Aim: To investigate the number of roots and root canal configurations using two coding systems and the root canal diverging and merging levels in extracted maxillary premolars in an Egyptian subpopulation using cone beam computed tomography (CBCT). Methodology: A total of 700 maxillary premolars were examined using CBCT in an Egyptian subpopulation. The number of roots was identified, and root canal configurations were classified according to Vertucci's classification and a new system for classifying root and canal morphology. In addition, the position where roots bifurcated and the levels where canals merged or diverged were identified. Fisher's exact test and independent t-test were used for statistical analysis, and the level of significance was set at 0.05 (P = 0.05). Results: More than half of maxillary first premolars were double-rooted, and the majority of maxillary second premolars were single-rooted (P < 0.001). Most of the double-rooted samples had bifurcations in the middle of the root. According to the Vertucci classification, canal configuration type IV was the most common in both first and second maxillary premolars. According to the new system, the code 2FP B1 P1 was the most common for maxillary first premolars, whilst 2SP B1 P1, 1SP2 and 1SP2-1 codes were the most common for maxillary second premolars. The three-canalled morphology in double- and three-rooted maxillary premolars had considerable variations. Root canal merging and diverging levels were comparable in both tooth types. Conclusion: Maxillary premolars in this Egyptian subpopulation had a wide range of root and canal anatomical variations. Clinicians should be aware of where canals merge and diverge to facilitate the treatment of all canals. The new system for classifying canal morphology describes the root and canal configurations in a more accurate and practical manner compared to the Vertucci classification. © 2018 International Endodontic Journal. Published by John Wiley & Sons Ltd

Item Type: Article
Uncontrolled Keywords: Cone beam computed tomography; maxillary premolars; morphology; root canal
Subjects: R Medicine > RK Dentistry
Divisions: Faculty of Dentistry
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 29 Jan 2020 00:48
Last Modified: 29 Jan 2020 00:48
URI: http://eprints.um.edu.my/id/eprint/23608

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