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Cone-beam computed tomography study of the root and canal morphology of mandibular permanent anterior teeth in a Chongqing population

Authors Zhengyan Y, Keke L, Fei W, Yueheng L, Zhi Z

Received 3 September 2015

Accepted for publication 19 November 2015

Published 23 December 2015 Volume 2016:12 Pages 19—25

DOI https://doi.org/10.2147/TCRM.S95657

Checked for plagiarism Yes

Review by Single-blind

Peer reviewers approved by Dr Hoa Le

Peer reviewer comments 2

Editor who approved publication: Professor Deyun Wang

Yang Zhengyan, Lu Keke, Wang Fei, Li Yueheng, Zhou Zhi

Department of Preventive Dentistry, The College of Stomatology, The Affiliated Hospital of Stomatology, Chongqing Medical University, Chongqing, People’s Republic of China


Objective: To investigate the root and canal morphology of permanent mandibular anterior teeth in a Chongqing population using cone-beam computed tomography (CBCT).
Methods: CBCT images of 1,725 patients in a Chongqing population were selected, and a total of 9,646 mandibular anterior teeth were analyzed. The number of root canals and the canal configurations were investigated.
Results: In total, 0.3% (11/3,257) of lateral incisors and 0.8% (26/3,014) of canines had double roots, and 3.8% (127/3,375) of central incisors, 10.6% (345/3,257) of lateral incisors, and 4.2% (127/3,014) of canines had multi-root canals. The difference in the incidence of multi-canals in lateral incisors between female and male was statistically significant. The frequency of multi-canals in the different age groups was 5.0% for central incisors for ages 21–30 years, 14.7% for lateral incisors for ages 41–50 years, and 8.1% for canines for ages 41–50 years.
Conclusion: With the limitations of the current study, we found that a high percentage of mandibular anterior teeth had multiple canals in the studied Chinese Chongqing population. The current data may provide clinicians practicing in Chongqing with a more thorough understanding of root canal morphology.

Keywords: cone-beam computed tomography, mandibular anterior teeth, root canal morphology, radicular grooves

A corrigendum has been published on this paper.

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