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To assess the severity of external apical root resorptions (EARR) in orthodontic patients by using digital subtraction and image reconstruction.Periapical radiographs from 34 individuals were obtained on the beginning (T0), after 6–7 months (T1), and after 12–13 months (T2) of treatment. These individuals had Angle Class I and II malocclusion and were treated with standard edgewise full fixed appliances...