Department of Endodontics, Faculty of Dentistry, Misr International University, Cairo, Egypt.
Department of Endodontics, Faculty of Dentistry, Ain Shams University, Cairo, Egypt.
J Endod. 2017 Jul;43(7):1089-1092. doi: 10.1016/j.joen.2017.02.014. Epub 2017 May 2.
The purpose of this study was to evaluate the number of roots and canal morphology of maxillary permanent molars in an Egyptian population.
Six hundred fifty-seven cases were included in this study. Digitized images from cone-beam computed tomographic scanning were assessed by 2 endodontists. The number of roots and canal configuration according to Vertucci were tabulated. Age, sex, and bilateral distribution differences were calculated.
All maxillary first molars showed 3-root configuration, whereas maxillary second molars showed 3-, 2-, and single-root configurations. For maxillary first molars, the most common Vertucci classifications for the mesiobuccal root were type II (2-1, 45.6%), type IV (2-2, 27.27%), and type I (1, 25.45%). For maxillary second molars, the most common Vertucci classifications for the mesiobuccal root were type II (2-1, 47.1%), type I (1, 42.06%), and type IV (2-2, 8.03%). The prevalence of a second mesiobuccal canal is statistically not affected by either sex, tooth position (right or left side), or age.
Under the conditions of this study, the root canal configurations of an Egyptian population showed that the most common Vertucci classifications for the mesiobuccal root for maxillary first molars were type II (2-1), type IV (2-2), and type I (1). For maxillary second molars, the most common types were type II (2-1), type I (1), and type IV (2-2). Pre-evaluation of the endodontic case using cone-beam computed tomographic digital imaging provides better information of root canal morphology, which might improve the management and prognosis of the case.
本研究旨在评估埃及人群上颌恒磨牙的牙根数量和根管形态。
本研究纳入了 657 例病例。由 2 名牙髓病医生评估锥形束 CT 扫描的数字化图像。根据 Vertucci 分类法，记录牙根数量和根管形态。计算年龄、性别和双侧分布差异。
所有上颌第一磨牙均呈现 3 根型，而上颌第二磨牙则呈现 3 根型、2 根型和单根型。对于上颌第一磨牙，最常见的 Vertucci 分类法对于近中颊根为 II 型（2-1，占 45.6%）、IV 型（2-2，占 27.27%）和 I 型（1，占 25.45%）。对于上颌第二磨牙，最常见的 Vertucci 分类法对于近中颊根为 II 型（2-1，占 47.1%）、I 型（1，占 42.06%）和 IV 型（2-2，占 8.03%）。第二近中颊根管的发生率无论性别、牙齿位置（右侧或左侧）或年龄均无统计学差异。
在本研究条件下，埃及人群的根管形态显示上颌第一磨牙近中颊根最常见的 Vertucci 分类法为 II 型（2-1）、IV 型（2-2）和 I 型（1）。对于上颌第二磨牙，最常见的类型为 II 型（2-1）、I 型（1）和 IV 型（2-2）。使用锥形束 CT 数字成像对牙髓病例进行预评估可以提供更好的根管形态信息，从而可能改善病例的管理和预后。
