Gonçalves do Nascimento L, Ribeiro Tinoco R L, Lacerda Protasio A P, Arrais Ribeiro I L, Marques Santiago B, Cameriere R
Department of Clinics and Social Dentistry, Federal University of Paraíba, Brazil.
Department of Anthropology, National Museum, Federal University of Rio de Janeiro, Brazi.
J Forensic Odontostomatol. 2020 Sep 30;38(2):2-11.
Dental age (DA) estimation is an extensively investigated resource used by forensic science. This study aimed to evaluate the applicability of the Measurement of Open Apices for DA estimation in north east Brazilians. A total of 429 orthopantomographs of individuals aged 5 to 14.99 years were used. The sample was distributed according to the age groups 5-6.99, 7-8.99, 9-10.99, 11-12.99 and 13-14.99 years, and the data were analyzed descriptively and by linear regression (α= 5%). The majority of the radiographs were from females (n = 241; 56.2%), with an overall mean age of 12 years (± 2.12). A significant difference was observed between DA and chronological age (CA) in the total sample and specifically in females and males. The method underestimated CA by 0.31 year (total sample) and by 0.3 and 0.32 year in females and males, respectively. In contrast, the method overestimated CA in the groups 5-6.99 and 7-8.99 years, with a mean difference (MD) of 0.48 year (p = 0.007) and 0.17 year (p = 0.182), respectively. In the other groups, DA was predicted to be below CA, with a significant difference in the group 13-14.99 (0.75 year). Based on the regression analysis, a correction factor was proposed from the original formula for this population, thereby reaching a predictive power of approximately 80%. To conclude, this method is applicable to the study population aged 5 to 13 years as the estimates obtained did not exceed the error limit of ±1 year.
牙齿年龄（DA）估算是法医学广泛研究的一项资源。本研究旨在评估在巴西东北部人群中使用根尖开口测量法进行DA估算的适用性。共使用了429张年龄在5至14.99岁个体的口腔全景片。样本按5 - 6.99岁、7 - 8.99岁、9 - 10.99岁、11 - 12.99岁和13 - 14.99岁年龄组进行分布，数据进行了描述性分析和线性回归分析（α = 5%）。大多数X光片来自女性（n = 241；56.2%），总体平均年龄为12岁（±2.12）。在总样本以及特定的女性和男性样本中，观察到DA与实际年龄（CA）之间存在显著差异。该方法在总样本中低估CA 0.31岁，在女性和男性中分别低估0.3岁和0.32岁。相比之下，该方法在5 - 6.99岁和7 - 8.99岁年龄组中高估了CA，平均差异（MD）分别为0.48岁（p = 0.007）和0.17岁（p = 0.182）。在其他年龄组中，预计DA低于CA，在13 - 14.99岁年龄组中差异显著（0.75岁）。基于回归分析，针对该人群从原始公式中提出了一个校正因子，从而达到了约80%的预测能力。总之，该方法适用于5至13岁的研究人群，因为所获得的估计值未超过±1岁的误差限度。
