Conservative Dental Science Department, Department of Preventive Dental Sciences, Dental Intern, College of Dentistry, Prince Sattam bin Abdulaziz University, Alkharj, Saudi Arabia.
Eur Rev Med Pharmacol Sci. 2022 Sep;26(18):6550-6560. doi: 10.26355/eurrev_202209_29753.
The study aims to evaluate maxillary molars' root and root canal morphology among the Saudi population using Cone-Beam Computed Tomography scanning (CBCT).
Retrospectively, the CBCT scans of 483 Saudi nationals were evaluated to identify the number of roots and root canals in maxillary first and second molars. The records were tabulated and classified according to Vertucci and a new system for root and canal classification given by Ahmed and Dummer. Fisher's exact test was used to analyze the data statistically. To check for symmetry, comparisons were made between all the maxillary first molars (MFM's) and maxillary second molars (MSM's) on opposing quadrants. Inter Observer variability was seen using Cohen's Kappa test.
MFM's presented with three roots with Type II Vertucci canal configuration (VC) commonly seen among them. MSM's had more variations in the number of roots and canals, although three roots and Type I VC were predominantly seen. When comparing the two genders statistically significant difference was observed in both maxillary molars at a 5% level using Fisher's exact test. Three roots with four canals (3R4C) were predominantly observed in the MFM's (85.6%) and three roots with three canals (3R3C) identified in 51.95% were more common than 3R4C (43.55%) in MSM's. Both the maxillary molars bilaterally, exhibited a high percentage of symmetry in root and canal configurations.
Identification of root canal morphology of molars would reduce the chances of root canal failures by making sure all canals are obturated. This study provides supplemental information about the root canals of maxillary molars in a Saudi Arabian subpopulation.
本研究旨在使用锥形束 CT 扫描（CBCT）评估沙特人群上颌磨牙的牙根和根管形态。
回顾性分析 483 名沙特国民的 CBCT 扫描图像，以确定上颌第一和第二磨牙的牙根和根管数量。将记录按 Vertucci 和 Ahmed 和 Dummer 提出的新根管分类系统进行分类和制表。使用 Fisher 精确检验对数据进行统计学分析。为了检查对称性，对所有上颌第一磨牙（MFM）和上颌第二磨牙（MSM）的相对象限进行了比较。使用 Cohen's Kappa 检验观察观察者间的变异性。
MFM 呈现出具有常见的 II 型 Vertucci 根管形态（VC）的三根牙根。MSM 中牙根和根管数量的变化更多，但常见的是三根和 I 型 VC。使用 Fisher 精确检验对两种性别进行统计学比较，在 5%的水平上观察到上颌磨牙均存在显著差异。MFM 中主要观察到三根四根管（3R4C）（85.6%），而 3R3C （51.95%）比 3R4C（43.55%）更常见。双侧上颌磨牙的根和根管形态都表现出很高的对称性。
确定磨牙的根管形态可以减少根管失败的机会，确保所有根管都被封闭。本研究为沙特亚种群上颌磨牙的根管提供了补充信息。
