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BMC Oral Health

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Open Access 01-12-2023 | Research

CBCT and Micro-CT analysis of the mandibular first premolars with C-shaped canal system in a Chinese population author

Authors: Yimeng Zhang, Xunben Weng, Yu Fu, Xuekai Qi, Yihuai Pan, Yu Zhao

Published in: BMC Oral Health | Issue 1/2023

Abstract

Objectives

The purpose of this study was to survey the prevalence of C-shaped root canal system in mandibular first premolar in Chinese population by reading Cone-beam computed tomography (CBCT) images and to analyze its anatomical characteristics by CBCT and Micro–computed tomography (Micro-CT).

Methods and materials

The prevalence and the morphologic features of C-shaped root canal system were evaluated by observing CBCT images of 760 patients (1520 mandibular first premolars). 66 mandibular first premolars with C-shaped root canal system were scanned by Micro-CT. The morphologic features including radicular groove, C-shaped root canal categories in the cross-sections and in the 3D models, accessory and connecting canals, apical foramina and accessory foramina, were analyzed using image software.

Results

C-shaped root canal system was identified in 16.9% of mandibular first premolars. The minimum mesial wall thickness most commonly occurred at the lingual site (69.7%). Regarding to the cross-sectional classification, the maximum was C2 (41.5%). In the 3D classification, the most common was S (34.8%). Accessory canals were observed in 36.4% of the samples and occurred mostly in the middle and apical regions. 42.4% samples had 1–3 variable connecting canals, and 40.9% samples had only one apical foramen.

Conclusions

The incidence of C-shaped root canal system in mandibular first premolars was 16.9% in the Chinese population. The anatomy was very complex and variable, mostly distributed in the middle and apical regions of the root canal. The mesial wall of C-shaped canal was extremely thin on the lingual side.

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Title: CBCT and Micro-CT analysis of the mandibular first premolars with C-shaped canal system in a Chinese population author
Authors: Yimeng Zhang
Xunben Weng
Yu Fu
Xuekai Qi
Yihuai Pan
Yu Zhao
Publication date: 01-12-2023
Publisher: BioMed Central
Published in: BMC Oral Health / Issue 1/2023
Electronic ISSN: 1472-6831
DOI: https://doi.org/10.1186/s12903-023-03271-w

Keynote webinar | Spotlight on medication adherence

Springer Medicine

CBCT and Micro-CT analysis of the mandibular first premolars with C-shaped canal system in a Chinese population author

Abstract

Objectives

Methods and materials

Results

Conclusions

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Objectives

Methods and materials

Results

Conclusions

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