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KMID : 1034420180430040042
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Restorative Dentistry & Endodontics
2018 Volume.43 No. 4 p.42 ~ p.42
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C-shaped root canals of mandibular second molars in a Korean population: a CBCT analysis
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Kim Hee-Sun
Jung Da-Un
Lee Ho
Han Yoon-Sic
Oh So-Hee
Sim Hye-Young
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Abstract
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Objectives: The purpose of this study was to investigate the C-shaped root canal anatomy of mandibular second molars in a Korean population.
Materials and Methods: A total of 542 teeth were evaluated using cone-beam computed tomography (CBCT). The canal shapes were classified according to a modified version of Melton's method at the level where the pulp chamber floor became discernible.
Results: Of the 542 mandibular second molars, 215 (39.8%) had C-shaped canals, 330 (53%) had 3 canals, 17 (3.3%) had 2 canals, 12 (2.2%) had 4 canals, and 8 (1.7%) had 1 canal. The prevalence of C-shaped canals was 47.8% in females and 28.4% in males. Seventy-seven percent of the C-shaped canals showed a bilateral appearance. The prevalence of C-shaped canals showed no difference according to age or tooth position. Most teeth with a C-shaped canal system presented Melton's type II (45.6%) and type III (32.1%) configurations.
Conclusions: There was a high prevalence of C-shaped canals in the mandibular second molars of the Korean population studied. CBCT is expected to be useful for endodontic diagnosis and treatment planning of mandibular second molars.
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KEYWORD
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C-shaped canal, Mandibular second molar, Korean, CBCT
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