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Background:Age assessment may be a crucial step in postmortem profiling leading to confirmativeidentification. In children, Demirjian’s method based on eight developmental stages was developed to determinematurity scores as a function of age and polynomial functions to determine age as a function of score. Aim: Of thisstudy was to evaluate the reliability of age estimation using Demirjian’s eight teeth method following the Frenchmaturity scores and Indian-specific formula from developmental stages of third molar with the help oforthopantomograms using the Demirjian method.Materials and Methods: Dental panoramic tomograms from 30 subjects each of known chronological age andsex were collected and were evaluated according to Demirjian’s criteria. Age calculations were performed usingDemirjian’s formula and Indian formula. Statistical analysis used was chi-square test and ANOVA test and the P-values obtained were statistically significant. Results: There was an average underestimation of age with both Indianand Demirjian’s formulas. The mean absolute error was lower using Indian formula hence it can be applied for ageestimation in present Gujarati population. Also, females were ahead of achieving dental maturity than males thuscompletion of dental development is attained earlier in females. Conclusion: Greater accuracy can be obtained ifpopulation-specific formulas considering the ethnic and environmental variation are derived performing theregression analysis.