Radiographic dental age estimation of Brazilian children and adolescents using a national reference sample

Q3 Medicine

Morphologie Pub Date : 2026-03-01 Epub Date: 2025-11-11 DOI:10.1016/j.morpho.2025.101081

E. Rodrigues , D. Moreira , R. Silva , A. Franco

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引用次数: 0

Abstract

Several radiographic methods have been proposed for dental age estimation, among which the Willems model and its Brazilian adaptation by Franco et al. (2024) have shown promising results. However, the Brazilian model has not yet been tested in Northeastern populations. This study aimed to validate Franco's model in a sample of children and adolescents from Alagoas, Northeastern Brazil. A retrospective, cross-sectional study was performed on 500 panoramic radiographs (250 males, 250 females) aged 6–15.99 years, distributed evenly across one-year intervals. Chronological age was calculated from documentary records and compared with dental age estimated using Demirjian's staging system and Franco's Brazilian model. Mean error (ME), mean absolute error (MAE), and root mean squared error (RMSE) were calculated and complemented by Bland – Altman analysis. The mean chronological age was 11.0 ± 2.9 years, while the mean estimated age was 10.8 ± 2.5 years. The overall ME was 0.18 years (0.06 males, 0.29 females). The MAE was 0.70 years (0.67 males, 0.73 females), with the best performance between 7 and 10.99 years (< 0.5 years). RMSE values increased in older groups, reaching > 1.0 year after age 13.99. Bland–Altman plots showed a transition from overestimation in younger ages to underestimation in older ages, earlier in females. The Brazilian model was adequate for the studied population, particularly for individuals aged 7–10.99 years, with overall differences below one year.

查看原文本刊更多论文

使用国家参考样本的巴西儿童和青少年的放射学牙齿年龄估计。

已经提出了几种用于牙齿年龄估计的放射学方法，其中Willems模型和Franco等人（2024）对其进行的巴西调整显示出有希望的结果。然而，巴西的模式还没有在东北部的人群中进行测试。这项研究的目的是在巴西东北部阿拉戈斯的儿童和青少年样本中验证佛朗哥的模型。对500张年龄6-15.99岁的全景x线片（男性250张，女性250张）进行回顾性横断面研究，平均间隔1年。从文献记录中计算出实足年龄，并将使用Demirjian的分期系统和Franco的巴西模型估计的牙齿年龄进行比较。计算平均误差（ME）、平均绝对误差（MAE）和均方根误差（RMSE），并辅以Bland - Altman分析。平均实足年龄11.0±2.9岁，平均预估年龄10.8±2.5岁。总ME为0.18年（男性0.06，女性0.29）。MAE为0.70岁（男性0.67岁，女性0.73岁），7 ~ 10.99岁表现最佳（13.99岁后1.0岁）。Bland-Altman图显示了从年轻人的高估到老年人的低估的转变，在女性中更早。巴西模型适用于研究人群，特别是7-10.99岁的个体，总体差异小于1岁。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Morphologie Medicine-Anatomy

CiteScore

2.30

自引率

0.00%

发文量

150

审稿时长

25 days

期刊介绍： Morphologie est une revue universitaire avec une ouverture médicale qui sa adresse aux enseignants, aux étudiants, aux chercheurs et aux cliniciens en anatomie et en morphologie. Vous y trouverez les développements les plus actuels de votre spécialité, en France comme a international. Le objectif de Morphologie est d?offrir des lectures privilégiées sous forme de revues générales, d?articles originaux, de mises au point didactiques et de revues de la littérature, qui permettront notamment aux enseignants de optimiser leurs cours et aux spécialistes d?enrichir leurs connaissances.