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Purpose: This study aimed to compare orthodontic treatment outcomes in maxillary protrusion enhanced by piezoelectric Corticotomy with and without bone graft guided by 3D surgical template. Subjects and Methods: sample of 20 patients with age range (18-25) year-old allocated randomly into 2 groups, Group I: patients were treated with piezocision corticotomy without bone graft guided by surgical template. Group II: patients were treated with piezocision corticotomy with bone graft guided by surgical template. Treatment changes were evaluated for each group and compared between groups. Data were analyzed using Paired t-test for each group and Student t-test to compare between the two groups. Results: There was a significant decrease in mean SNA, ANB, H angles, SN-U1, MP-L1, overjet measurements and significant increase in mean interincisal and nasolabial angles for both groups. While there was a non-significant difference between mean differences in skeletal, dental and soft tissue measurements between the two groups (p < 0.05). Both groups revealed decrease in the mean en masse retraction time. Conclusion: Maxillary protrusion cases treated with piezoelectric corticotomy revealed improvements in profile, esthetics and acceleration in orthodontic tooth movement.

Assessment of Orthodontic Treatment Outcomes in Maxillary Protrusion Enhanced by Guided Piezoelectric Corticotomy with Bone Graft (Comparative study)