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Objective: To examine the prevalence of orthodontically induced root resorption after treatment and the correlation with resorption found after 7 months of treatment. Materials and Methods: One hundred forty patients (12–19 years) treated with fixed appliancesand extraction of four premolars were examined with con beam computed tomography before treatment, after 7 months of treatment (n=87), and at the end of active treatment. The MalmgrenIndex was used to describe the degree of root resorption. Results: Resorption root severe (>2 mm, score 3) was found in 30% of the patients at the end oftreatment. Extreme root resorption was found in two patients. Root resorption was seen morefrequently in the maxillary incisor region. There was no correlation between the severities of rootresorption after 7 months and the amount observed at the end of treatment. Conclusions:It was diagnosed significant resorpationin clinical in 30% of the patients, but nocorrelation with the resorption seen after 7 months was found.Radiographic examination after 7months of orthodontic treatment willnot reduce the number of patients who will have teeth with severe root resorption.

Root Resorption Investigated With Con Beam Computed Tomography End of Orthodontic Treatment With Fixed Appliance