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Accuracy of four dental age estimation methods in determining the legal age threshold of 18 years among South Indian adolescents and young.
Journal of Forensic Odonto-stomatology 2021 December 31
The aim of this study was to compare the accuracy, specificity and sensitivity of four commonly used methods of dental age estimation in a sample of south Indian adolescents and young adults aged between 14 and 30 years, with an age threshold of 18 years, using receiver operating characteristic curves (ROC) and the area under the curve (AUC). A total of 1070 orthopantomograms (535 males and 535 females) of adolescents and young adults of south Indian origin were collected retrospectively and interpreted. The effectiveness of each method was evaluated by using sensitivity (Se), specificity (Sp), likelihood ratios (LR+ and LR-) and AUC. Among all methods, I3M< 0.08 resulted in better values of AUC, Se and Sp which were 0.950, 91.5%, 97.8% and 0.950, 88.5% and 98.6% in males and females, respectively. For "stage H" of Demirjian's system, the AUC, Se and Sp were 0.940, 84.9%, 97.7% and 0.930, 79.9% and 98.5% in males and females, respectively. The use of the Olze et al "stage 1 (or higher)" root pulp visibility and "stage D" of third molar eruption were not recommended in the studied population due to the greater percentage of third molars with incomplete mineralization in younger age groups and impaction. Taking into account the values of Se, Sp, both positive and negative LRs, we recommend the use of the cut-off value of I3M< 0.08 to discriminate adults and minors in south Indian adolescents and young adults.
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