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Published on: February 23, 2024
Root and canal morphology of mandibular second molars in a Chinese Kazakh population by cone-beam computed tomography
Shuchun Yang1, Chenye Li2, Hui Shi2
1Department of Prosthodontics, School and Hospital of Stomatology, Liaoning Provincial Key Laboratory of Oral Diseases, China Medical University, Shenyang, 110002, China.
Objective:
This study aimed to investigate variations in root and canal morphology of the mandibular second molars in a Chinese Kazakh population using cone-beam computed tomography (CBCT).
Methods:
A total of 374 mandibular second molars from 236 patients were included in the retrospective study. The mandibular second molars were categorized based on the radiographic morphology of their external roots: non-fused roots (NFR), fused roots (FR), and single roots with a single canal (SS). The configuration of the C-shaped canal at three different levels was categorized into C1-C5. A chi-square test was employed to assess the association between the incidence of C-shaped root canals and demographic factors such as sex and tooth position.
Results:
Mandibular second molars typically had two roots. C-shaped root canals appeared in 33.1% of second molars. The C-shaped form was most prominent in C3, followed by C1. Sex and tooth position did not exhibit notable differences.
Conclusions:
The incidence of C-shaped root canals in the Chinese Kazakh population was similar to that previously reported in Asian populations and higher than in Caucasian and Middle Eastern populations.
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