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Accuracy of Cameriere's cut-off value for third molar in assessing 18 years of age

机译：Cameriere的第三磨牙临界值在评估18岁时的准确性

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摘要

Due to increasingly numerous international migrations, estimating the age of unaccompanied minors is becoming of enormous significance for forensic professionals who are required to deliver expert opinions. The third molar tooth is one of the few anatomical sites available for estimating the age of individuals in late adolescence. This study verifies the accuracy of Cameriere's cut-off value of the third molar index (I3M) in assessing 18 years of age. For this purpose, a sample of orthopantomographs (OPTs) of 397 living subjects aged between 13 and 22 years (192 female and 205 male) was analyzed. Age distribution gradually decreases as I3M increases in both males and females. The results show that the sensitivity of the test was 86.6%, with a 95% confidence interval of (80.8%, 91.1%), and its specificity was 95.7%, with a 95% confidence interval of (92.1%, 98%). The proportion of correctly classified individuals was 91.4%. Estimated post-test probability, p was 95.6%, with a 95% confidence interval of (92%, 98%). Hence, the probability that a subject positive on the test (i.e., I3M0.08) was 18 years of age or older was 95.6%.
机译：由于越来越多的国际移徙，估计无人陪伴的未成年人的年龄对于需要发表专家意见的法医专业人员来说，具有重要意义。第三颗臼齿是可用于估计青春期晚期个体年龄的少数解剖部位之一。这项研究验证了Cameriere第三摩尔指数（I3M）的临界值在评估18岁时的准确性。为此，分析了397位年龄在13至22岁（192位女性和205位男性）的活体受试者的正射电描记器（OPT）样本。随着I3M的增加，男性和女性的年龄分布逐渐降低。结果表明该测试的灵敏度为86.6％，置信区间为95％（80.8％，91.1％），特异性为95.7％，置信区间为95％（92.1％，98％）。正确分类的个人比例为91.4％。估计的测试后概率p为95.6％，置信区间为95％（92％，98％）。因此，受试者在测试中呈阳性（即I3M <0.08）年龄在18岁或以上的可能性为95.6％。

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