Objectives. Dental age estimation has been employed in a range of legal operations as well as catastrophe victim identification. Dental age estimation is regarded as an appropriate method for estimating a person’s age because there is a high association between age and teeth. This study aims to assess the suitability of the Al Qahtani and Willems dental age estimation approaches for the Indonesian children and adolescent population. Methods. A total of 150 panoramic radiographs of patients (75 boys and 75 girls, 6-17 years old) were obtained from the Department of Radiology, Airlangga University, Indonesia. One researcher analyzed estimated dental age (EDA) twice in a one-week time-lapse using the Willems and Al Qahtani methods. The statistical analysis of the present study was carried out using IBM® SPSS® Statistics version 25.0 (IBM, Armonk, NY, USA). Results. The mean of this study’s chronological age (CA) was 11.60 ± 3.41. Using the Willems method, the mean difference between CA and EDA for boys and girls was -0.41 ± 0.90. The mean difference between CA and EDA for boys and girls is 0.33 ± 0.61 using the Al Qahtani method. Conclusions. According to the findings of this investigation, the dental age estimation method proposed by Al Qahtani and Willems can be applied to the population in Surabaya. However, a comprehensive study is required when using this method because the data revealed significant statistical disparities between the two methods.

Background: The Demirjian method is used in assessing the stages of growth and development of teeth to calculate a person’s estimated age. In 1973, Demirjian identified the eight stages of tooth growth and development and their respective criteria. Purpose: To analyze the validity of Demirjian’s method for estimating dental age among children aged 6–17 years old in Surabaya, Indonesia. Methods: From August–October 2020, 162 panoramic radiographs of patients aged 6–17 years were taken at the radiology department of Airlangga Dental Hospital. Data analysis was conducted using SPSS software for different tests, including a paired t test. Results: Using the Demirjian method, there was no significant dissimilarity between chronological age (CA) and estimated dental age (EDA) in the male group. However, a significant dissimilarity was found between CA and EDA in the female group.Conclusion: Demirjian’s method can be used as a tool for estimating the dental age of males age 6-17 years old in Surabaya.