C-shaped root canals of mandibular second molars in a Korean population: a CBCT analysis
김희선, 정다운, 이호, 한윤식, 오소희, 심혜영,
소속 상세정보
김희선 ( Kim Hee-Sun ) - Seoul Metropolitan Government-Seoul National University Boramae Medical Center Department of Dentistry
정다운 ( Jung Da-Un ) - Seoul Metropolitan Government-Seoul National University Boramae Medical Center Department of Dentistry
이호 ( Lee Ho ) - Seoul Metropolitan Government-Seoul National University Boramae Medical Center Department of Dentistry
한윤식 ( Han Yoon-Sic ) - Seoul Metropolitan Government-Seoul National University Boramae Medical Center Department of Dentistry
오소희 ( Oh So-Hee ) - Seoul Metropolitan Government-Seoul National University Boramae Medical Center Department of Biostatistics
심혜영 ( Sim Hye-Young ) - Seoul Metropolitan Government-Seoul National University Boramae Medical Center Department of Dentistry
Abstract
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.
키워드
C-shaped canal; Mandibular second molar; Korean; CBCT
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