Dogan Mehmet Emin, Turkoglu Burcu Nur, Şengul Ilhan
Faculty of Dentistry, Department of Dentomaxillofacial Radiology, Harran University, Sanliurfa 63200, Türkiye.
Şanlıurfa Oral and Dental Health Hospital, Sanlıurfa 63010, Türkiye.
Diagnostics (Basel). 2025 Jun 8;15(12):1459. doi: 10.3390/diagnostics15121459.
It has been suggested that the mandible may differ according to gender. The fact that the mandible and the anatomical structures on it show various changes with age and gender differences is important in gender and age determination. The aim of this study was to evaluate the morphometric variation in the condyle and coronoid processes and the gonial angle, which are anatomical structures forming the mandible, with gender and age. Cone beam CT images of 141 individuals (78 female, 63 male) were used in this study. The images of all patients were obtained with the same X-ray device; the images were obtained at 70 kVp, 10 mA, and a 32 s exposure time in accordance with the manufacturer's recommendations. Images displayed with 0.3 mm voxel with the IRYS 15.0 program were examined in the axial, sagittal, and coronal planes, and measurements were taken. The gonial angle, coronoid notch, condyle height, condyle-coronoid distance, and sigmoid notch depths were evaluated. The average age of 141 individuals was 43.21 ± 15.96 years, and 55.3% of them were female and 44.7% were male. The mean right gonial angle in females (128.66 ± 5.50°) was significantly higher than in males (125.68 ± 5.10°) ( < 0.005). Similarly, the mean left gonial angle in females (128.84 ± 5.97°) was significantly higher than in males (125.26 ± 4.89°) ( < 0.005). The sigmoid notch depth was found to be greater in men, with an average of 13.88 ± 2.46 mm, while in women, it had an average of 13.13 ± 1.80 mm, and this difference was statistically significant ( < 0.005). The relationship between the two sides' coronoid notch height, sigmoid notch depth, condyle height, and condyle-coronoid distance and age groups was not statistically significant ( > 0.005). Overall, our findings indicate that the male mandible may have a longer condyle, a narrower gonial angle, and a wider sigmoid notch depth than that of females. It has been observed that ramus measurements such as condyle length and sigmoid notch depth may be important in gender discrimination, and the male mandible exhibits larger values in these parameters. No differences in parameters were observed between age groups.
有人提出，下颌骨可能因性别而异。下颌骨及其上的解剖结构会随着年龄和性别差异呈现出各种变化，这一事实在性别和年龄判定中很重要。本研究的目的是评估构成下颌骨的髁突、冠突和下颌角等解剖结构在性别和年龄方面的形态测量变异。本研究使用了141名个体（78名女性，63名男性）的锥形束CT图像。所有患者的图像均使用同一台X射线设备获得；根据制造商的建议，图像在70 kVp、10 mA和32秒的曝光时间下获取。使用IRYS 15.0程序以0.3毫米体素显示的图像在轴向、矢状和冠状平面上进行检查并进行测量。评估了下颌角、冠突切迹、髁突高度、髁突 - 冠突距离和乙状切迹深度。141名个体的平均年龄为43.21±15.96岁，其中55.3%为女性，44.7%为男性。女性的平均右侧下颌角（128.66±5.50°）显著高于男性（125.68±5.10°）（<0.005）。同样，女性的平均左侧下颌角（128.84±5.97°）显著高于男性（125.26±4.89°）（<0.005）。发现男性的乙状切迹深度更大，平均为13.88±2.46毫米，而女性平均为13.13±1.80毫米，这种差异具有统计学意义（<0.005）。两侧冠突切迹高度、乙状切迹深度、髁突高度和髁突 - 冠突距离与年龄组之间的关系无统计学意义（>0.005）。总体而言，我们的研究结果表明，男性下颌骨的髁突可能更长，下颌角更窄，乙状切迹深度比女性更宽。据观察，诸如髁突长度和乙状切迹深度等下颌支测量值在性别歧视中可能很重要，并且男性下颌骨在这些参数上表现出更大的值。各年龄组之间在参数上未观察到差异。
