Kim Hee-Sun, Jung Daun, Lee Ho, Han Yoon-Sic, Oh Sohee, Sim Hye-Young
Department of Dentistry, Seoul Metropolitan Government-Seoul National University Boramae Medical Center (SMG-SNU BMC), Seoul, Korea.
Department of Biostatics, Seoul Metropolitan Government-Seoul National University Boramae Medical Center (SMG-SNU BMC), Seoul, Korea.
Restor Dent Endod. 2018 Nov 1;43(4):e42. doi: 10.5395/rde.2018.43.e42. eCollection 2018 Nov.
The purpose of this study was to investigate the C-shaped root canal anatomy of mandibular second molars in a Korean population.
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.
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.
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.
本研究旨在调查韩国人群下颌第二磨牙的C形根管解剖结构。
使用锥形束计算机断层扫描(CBCT)对542颗牙齿进行评估。在髓室底清晰可见的水平,根据改良的梅尔顿方法对根管形态进行分类。
在542颗下颌第二磨牙中,215颗(39.8%)有C形根管,330颗(53%)有3根管,17颗(3.3%)有2根管,12颗(2.2%)有4根管,8颗(1.7%)有1根管。C形根管在女性中的患病率为47.8%,在男性中为28.4%。77%的C形根管呈双侧出现。C形根管的患病率在年龄或牙位方面无差异。大多数具有C形根管系统的牙齿呈现梅尔顿II型(45.6%)和III型(32.1%)形态。
在所研究的韩国人群下颌第二磨牙中,C形根管的患病率较高。预计CBCT对下颌第二磨牙的牙髓病诊断和治疗计划有用。