ArticleClinical oral investigations2024
The Brazilian (FRANCO) method for dental age estimation: Willems' model revisited.
Article in Clinical oral investigations, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers, 2 of them syntheses that pooled it.
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Who cites it
6 citing papers in PubMed, 2 syntheses or guidelines pooled it.
- Panoramic radiograph-based dental age estimation in children and adolescents using multi-tooth methods: a scoping review of methods used and reported accuracy (2020-2025).BMC oral health · 2026Pooled it
- Global lens of Willems' method for dental age estimation: where we are and where we are going - umbrella review.International journal of legal medicine · 2025Pooled it
- Forensic performance of dental age estimation methods at legal age thresholds in Latin America: a scoping review.Forensic science, medicine, and pathology · 2026Review
- Applicability and validation of Franco, Willems and Willems II dental age estimation models in a population of Ceará, Brazil.Scientific reports · 2026Article
- Assessing the impact of structured teaching on dental age estimation using the Demirjian staging system among undergraduate dental students.The Journal of forensic odonto-stomatology · 2025Article
- Evaluation of Demirjian staging method reproducibility and reliability for dental age estimation between eight forensic experts.International journal of legal medicine · 2025Article
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7 authors.
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Abstract
objectivesThis study aimed (I) to test the Willems' dental age estimation method in different geographic samples of the Brazilian population, and (II) to propose a new model combining the geographic samples in a single reference table of Brazilian maturity scores. MATERIALS AND
methodsThe sample consisted of 5017 panoramic radiographs of Brazilian males (n = 2443) and females (n = 2574) between 6 and 15.99 years (mean age = 10.99 ± 2.76 years). The radiographs were collected from the Southeastern (SE) (n = 2920), Central-Western (CW) (n = 1176), and Southern (SO) (n = 921) geographic regions. Demirjian's technique was applied followed by Willems' method and the proposed Brazilian model.
resultsWillems' method led to mean absolute errors (MAE) of 0.79 and 0.81 years for males and females, respectively. Root mean squared errors (RMSE) were 1.01 and 1.03 years, respectively. The Brazilian model led to MAE of 0.72 and 0.74 years for males and females, respectively, and RMSE of 0.93 years for both sexes. The MAE was reduced in 70% of the age categories. Differences between regions were statistically (p < 0.05) but not clinically significant.
conclusionThe new model based on a combined population had an enhanced performance compared to Willems' model and led to reference outcomes for Brazilians. CLINICAL RELEVANCE: Assessing patients' biological development by means of dental analysis is relevant to plan orthopedic treatments and follow up. Having a combined-region statistic model for dental age estimation of Brazilian children contributes to optimal age estimation practices.
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