The Effect of Corticotomy in En-mass Retraction

"Surgical procedure~1. After local anesthesia, vertical interproximal incisions will be done under the interdental papilla, on the labial aspect of upper arch using a blade No. 15.~2. The incisions will be kept minimal.~3. The incisions go though the periosteum, which permit the blade to reach to the alveolar bone.~4. A Piezo surgical knife will be used to make the cortical alveolar incision through the gingival incisions to a depth of approximately 3mm.~5. As we will not use bone graft so we don't need use suturing after cortication.~6. We give patient antibiotic and analgesic cover."