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Background: Assessing the dental development of children and adolescents is an important part of treatment planning.The radiographic visualization of dental developmental stages prior to age estimation is currently feasible by means of digital software apps.Testing the existing software tools is necessary to safeguard application in practice.This study applied the London Atlas Software App 2nd edition™ for dental age estimation in Brazilian children.Material and Methods: The software was applied to 1.104 digital panoramic radiographs of females (n = 509) and males (n = 595) with ages between 6 and 15.99 years (mean = 10.88 ± 2.84 years).The sample included at least 100 individuals similarly distributed based on sex within 10 age categories of one year each (6├ 15.99) years.Metrics of errors were quantified between the estimated (EA) and chronological (CA) ages.Results: The mean absolute errors among females and males were 0.56 and 0.60 years, respectively (overall = 0.58 years for the combined sample).The lower error values were observed in the age interval of 6 ├ 9.99 years.Error values above one year were detected in older age intervals (10 ├ 15.99 years).Statistically significant differences in dental development were not observed between females and males (p > 0.05).Conclusions: The London Atlas Software App 2nd edition led to specific error rates that can be acceptable for case-specific clinical applications.In the forensic field, caution is advised if the application is planned in the transition between late childhood and early adolescence -when third molars play a major role among the scarce developing teeth.
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