Şendişçi Gök Rümeysa, Tercanlı Hümeyra, Ekinci Ali
Faculty of Dentistry, Departmant of Oral and Maxillofacial Radiology , Antalya Bilim University, Antalya, Turkey.
Faculty of Dentistry, Departmant of Oral and Maxillofacial Radiology , Akdeniz University, Antalya, Turkey.
BMC Oral Health. 2025 May 26;25(1):798. doi: 10.1186/s12903-025-06144-6.
The objective of the research was to analyze the differences in root structure found in mandibular molars through cone beam computed tomography (CBCT) and to highlight their morphological features.
This study retrospectively examined CBCT images of 200 patients, encompassing a total of 496 molars in the study group. The frequency of radix entomolaris (RE), radix paramolaris (RP), and C-shaped canals was assessed based on molar type, side, and gender. The data are presented as frequencies and percentages, and the Chi-square test was employed to analyze potential differences between groups. A significance level of p < 0.05 was set for all tests. The normality of the data was assessed using the Shapiro-Wilk test.
The study included 91 males (47%) and 109 females (53%), with a mean age of 32.49 ± 14.29 years. The frequency of RE was 4.2% (n = 21), RP was 0.8% (n = 4) and C-shaped canal was 7.1% (n = 35) in 496 molars (first molars n = 247, second molars n = 249). RE, RP and C-shaped canal were found in 3.4%, 0.2% and 0.2% of the mandibular first molars, respectively; RE, RP and C-shaped canal were found in 0.8%, 0.6% and 6.8% of the second molars, respectively. There was no statistically significant difference between the root variations examined and gender and lateralisation (p > 0.05).
Identifying anatomical variations in mandibular molars holds clinical importance, as it can improve endodontic treatment outcomes and provide insight into existing failures. Early detection of C-shaped canals and additional root structures can provide more effective cleaning and disinfection processes by more customizing treatment plans.
本研究的目的是通过锥形束计算机断层扫描（CBCT）分析下颌磨牙牙根结构的差异，并突出其形态特征。
本研究回顾性检查了200例患者的CBCT图像，研究组共有496颗磨牙。根据磨牙类型、侧别和性别评估乙状根（RE）、旁磨牙根（RP）和C形根管的发生率。数据以频数和百分比表示，采用卡方检验分析组间潜在差异。所有检验的显著性水平设定为p < 0.05。使用Shapiro-Wilk检验评估数据的正态性。
该研究纳入91名男性（47%）和109名女性（53%），平均年龄为32.49 ± 14.29岁。在496颗磨牙（第一磨牙n = 247，第二磨牙n = 249）中，RE的发生率为4.2%（n = 21），RP为0.8%（n = 4），C形根管为7.1%（n = 35）。在下颌第一磨牙中，RE、RP和C形根管的发生率分别为3.4%、0.2%和0.2%；在第二磨牙中，RE、RP和C形根管的发生率分别为0.8%、0.6%和6.8%。所检查的牙根变异与性别和侧别之间无统计学显著差异（p > 0.05）。
识别下颌磨牙的解剖变异具有临床重要性，因为它可以改善牙髓治疗效果，并为现有治疗失败提供见解。早期发现C形根管和额外的牙根结构可以通过更定制化的治疗计划提供更有效的清洁和消毒过程。
