Department of Pediatric Dentistry, Faculty of Dentistry, Ondokuz Mayis University, Samsun, Turkey.
Acta Odontol Scand. 2022 Aug;80(6):419-426. doi: 10.1080/00016357.2021.2024877. Epub 2022 Jan 11.
Forensic examinations involve the identification of age and sex from living or mortal remains. The mandible comprises several growth parameters and is often recovered intact, making it an important tool for radiological identification. Therefore, the present study was conducted to determine the accuracy of various mandibular measurements on digital panoramic images in indicating sex and age in a subadult population. Methods: Panoramic images from 1,100 individuals (550 males, 550 females) ranging in age between 3 and 13 years were divided into 11 groups according to age. Ten mandibular linear dimensions (ramus height, condylar ramus height, coronoid ramus height, maximum ramus breadth, minimum ramus breadth, bigonial breadth, bicondylar breadth, bimental breadth, lateral length of mental foramen, vertical length of mental foramen) and gonial angle were measured bilaterally. Univariate discriminant and regression analyses were performed to determine the most significant predictors of sex and age.
All linear dimensions were higher for males than females for all age groups. Gonial angle did not vary significantly by gender. Discriminant analysis showed linear measurements and gonial angle exhibited poor accuracy in sex determination. Despite a positive correlation between linear measurements and a negative correlation between gonial angle and age, the discriminant analysis found that age estimations made using all the recorded variables had an accuracy of only 66.72%.
In line with previous research on different populations, findings for the selected subadult population sample showed that the growing mandible does not present sufficient sexual dimorphism to be useful for sex and age estimations.
法医检查涉及从活体或尸体遗骸中识别年龄和性别。下颌骨包含几个生长参数，且通常完整回收，使其成为放射学识别的重要工具。因此，本研究旨在确定数字全景图像中各种下颌骨测量值在指示未成年人群体性别和年龄方面的准确性。方法：将年龄在 3 至 13 岁之间的 1100 名个体（550 名男性，550 名女性）的全景图像分为 11 组，按年龄分组。测量了十个下颌骨线性尺寸（下颌支高度、髁突支高度、喙突支高度、最大下颌支宽度、最小下颌支宽度、下颌角宽度、双髁突宽度、双下颌支宽度、下颌孔外侧长度、下颌孔垂直长度）和下颌角。进行了单变量判别和回归分析，以确定性别和年龄的最显著预测因子。结果：所有线性尺寸在所有年龄组中男性均高于女性。下颌角的性别差异不显著。判别分析表明，线性测量和下颌角的性别确定准确性较差。尽管线性测量与年龄呈正相关，而下颌角与年龄呈负相关，但判别分析发现，使用所有记录变量进行的年龄估计准确性仅为 66.72%。结论：与先前对不同人群的研究一致，对所选未成年人群体样本的研究结果表明，不断生长的下颌骨没有足够的性别二态性，无法用于性别和年龄估计。
