Abstract
Introduction
The purpose of this study was to investigate the root canal configuration of the mandibular
anterior teeth using cone-beam computed tomographic (CBCT) imaging in a Chinese subpopulation.
Methods
A total of 3,871 CBCT images of mandibular anterior teeth were collected from 648
patients who accepted CBCT projection as a preoperative assessment for implants or
orthodontic treatment. The following items were recorded and evaluated: tooth position,
root number, canal number, root canal type, the distance between the anatomic apex
and the point at which the canal divided into 2 for mandibular anterior teeth with
2 root canals (excluding canines with 2 roots), and the distance between the 2 root
canal orifices. The Fisher exact test was used to analyze the correlation between
the number of root canals and tooth position.
Results
All of the incisors in this study had 1 root, and 1.32% of the canines had 2 roots.
The prevalence of 2 root canals in the lateral incisors (354, 27.36%) was higher than
that in the central incisors (202, 15.71%) (P < .05) and the canines (81, 6.27%) (P < .05).
Conclusions
There is a high prevalence of 2 root canals in the mandibular anterior teeth of the
studied Chinese subpopulation. This study provides detailed information about the
root canal morphology of mandibular anterior teeth in a Chinese subpopulation.
Key Words
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Article info
Publication history
Published online: July 16, 2014
Identification
Copyright
© 2014 American Association of Endodontists. Published by Elsevier Inc. All rights reserved.
