Cone-beam computed tomography study of root and canal morphology of mandibular premolars in a western Chinese population

BMC Medical Imaging

Research Article

Hu Wang¹  Bin Guo²  Tao Hu DDS³  Ke-Zeng Li³  Ru Zhang³  Yuan-Yuan Tian³  Xuan Yu⁴ 

[1]Department of Radiology, West China School of Stomatology, Sichuan University, Chengdu, China

[2]Institute of Stomatology of Chinese PLA General Hospital, Beijing, P.R. China

[3]State Key Laboratory of Oral Diseases, Departments of Operative Dentistry and Endodontics, West China School of Stomatology, Sichuan University, Chengdu, P.R. China

[4]State Key Laboratory of Oral Diseases, Departments of Operative Dentistry and Endodontics, West China School of Stomatology, Sichuan University, Chengdu, P.R. China

[5]Department of Stomatology, Yinzhou People's Hospital, Ningbo, Zhejiang, P.R. China

关键词: Cone-beam computed tomography;    Mandibular premolar;    Morphology;    Root canal configuration;   

DOI  :  10.1186/1471-2342-12-18

 received in 2011-07-27, accepted in 2012-07-20,  发布年份 2012

来源: Springer

【 摘 要 】

BackgroundTraditional radiography is limited in its ability to give reliable information on the number and morphology of root canals. The application of cone-beam computed tomography (CBCT) provides a non-invasive three-dimensional confirmatory diagnosis as a complement to conventional radiography. The aim of this study was to evaluate the root and canal morphology of mandibular premolars in a western Chinese population using CBCT scanning.MethodsThe sample included 149 CBCT images comprising 178 mandibular first premolars and 178 second premolars. The tooth position, number of roots and canals, and canal configuration according to Vertucci’s classification were recorded.ResultsThe results showed that 98% of mandibular first premolars had one root and 2% had two roots; 87.1% had one canal, 11.2% had two canals and 0.6% had three canals. The prevalence of C-shaped canals was 1.1%. All mandibular second premolars had one root; 97.2% had one canal and 2.2% had two canals. The prevalence of C-shaped canals was 0.6%.ConclusionsThe prevalence of multiple canals in mandibular first premolars was mainly of Type V, and mandibular second premolars had a low rate of canal variation in this western Chinese population. Root canal bifurcation occurred at the middle or apical third in most bicanal mandibular premolars. CBCT scanning can be used in the management of mandibular premolars with complex canal morphology.

【 授权许可】

Unknown   
© Yu et al.; 2012. This article is published under license to BioMed Central Ltd. licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.