Tehran University of Medical Sciences Journal of Craniomaxillofacial Research 2345-5489 10 2 2023 10 16 79 81 Amirmohammad Arabi Daredor Craniomaxillofacial Research Center, Tehran University of Medical Sciences, Tehran, Iran; Department of Oral and Maxillofacial Surgery, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran. Alireza Parhiz Craniomaxillofacial Research Center, Tehran University of Medical Sciences, Tehran, Iran; Department of Oral and Maxillofacial Surgery, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran. Amirali Asadi Craniomaxillofacial Research Center, Tehran University of Medical Sciences, Tehran, Iran; Department of Oral and Maxillofacial Surgery, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran. 2023 07 29 2023 09 30 Sagittal split ramus osteotomy is one of the most efficient steotomy techniques for orthognathic surgery.  This technical note presents a new technique of mandibular osteotomy to prevent bony interferences  with simultaneous maxillary impctions. As well as increase in bone contact for great mandibular  advancements which results in better bone healing. furthermore, Fixation of bony segments in  this area is far from third molar alveolar socket if extraction is done and is not involved in the process.  Keywords: Orthognathic surgery; Mandible; Osteotomy; Maxilla; Impaction. https://jcr.tums.ac.ir/index.php/jcr/article/view/450 https://jcr.tums.ac.ir/index.php/jcr/article/download/450/380