ArticleBMC oral health2022
Comparative assessment of the Willems dental age estimation methods: a Chinese population-based radiographic study.
Article in BMC oral health, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers, 2 of them syntheses that pooled it.
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5 citing papers in PubMed, 2 syntheses or guidelines pooled it, 6 citations in OpenAlex.
- 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
- Deep learning-based dental age classification from panoramic radiographs: a multi-granularity, multi-model comparative study.BMC oral health · 2026Article
- A hybrid convolutional neural network model for dental age estimation using buccal alveolar bone level for Saudi children.BMC oral health · 2025Article
- A population-based study to assess two convolutional neural networks for dental age estimation.BMC oral health · 2023Article
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10 authors at 2 institutions in 1 country.
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Abstract
backgroundThe comparison of the two Willems dental age estimation methods (gender-specific (Willems I) and non-gender-specific (Willems II)) has not been fully investigated. Here we aimed to explore the applicability of the Willems dental age estimation in an Eastern Chinese population, which may cast light on the field of dental age estimation.
methodsA total of 1211 oral panoramic radiographs (582 boys and 629 girls) of the Chinese Han population aged 11-16 years old were collected. Dental ages (DAs) were calculated using the Willems method. Statistical significance was set at a p-value < 0.05. Age differences between chronological age (CA) and dental age were analyzed by paired t-tests and mean absolute error (MAE).
resultsThe differences between CA and DA determined by the Willems I method were + 0.44 and + 0.09 years for boys and girls, respectively. When using the Willems II method, these differences were + 0.57 and - 0.09. The MAEs of the Willems I method between DA and CA were 0.95 and 1.00 years in boys and girls, respectively. For Willems II, MAEs were 1.02 and 1.00 years in boys and girls.
conclusionsThis study showed that the Willems I method was more accurate than the Willems II method in the boys' group for predicting age from a whole scale. In comparison, Willems II is more competitive in the girls' group. Neither method may be satisfactory for 11-to-16-year-old teenagers in Eastern China.
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