Comparison of the orthodontic treatment outcomes with the extraction of lower incisors associated with torque control

Aim: This prospective clinical study evaluated the cephalometric effects of orthodontic treatment with lower incisor extraction associated with buccal torque. Methods: Cephalograms were evaluated at the beginning (T1) and the end (T2) of orthodontic treatment of 20 patients with a mean age of 32.2 years, Angle Class I malocclusion, and anteroinferior crowding. Orthodontic treatment was performed with a MBT prescription bracket, 0.022” slot with modified torque programming in the lower incisors (central and lateral: +6º), and a single lower incisor was extracted. Cephalometric measurements were performed using Dolphin® software by a single calibrated examiner. Data analysis was performed using the t-test for dependent samples, with a significance level of 5%. Results: No statistically significant differences were observed in the cephalometric measurements evaluated (p≥0.194). Conclusions: Orthodontic treatment carried out with extraction of lower incisors and associated with buccal torque did not promote dental and tegumentary cephalometric changes, positively impacting the completion of the treatment.