Stability of pre-orthodontic orthognathic surgery depending on mandibular surgical techniques: SSRO vs IVRO

Postoperative stability of conventional bimaxillary surgery compared with maxillary impaction surgery with mandibular autorotation for patients with skeletal class II retrognathia

“…For the cephalometric measurements, we constructed an x-y coordinate system. 16 The x-axis originated at the N-point and formed an angle of 7 • upwards from the SN plane. The y-axis was defined as the line perpendicular to the x-axis and passing through the S-point.…”

Occlusal Plane Altering 2 Jaw Surgery Based on the Clockwised Rotational Surgery-First Orthognathic Approach

“…For aesthetic reasons, we chose to treat this patient using maxillary posterior impaction without maxillary advancement and mandibular setback based on the surgery-first orthognathic approach without presurgical orthodontic treatment. 3 , 4 The patient was followed up for a period of 60 months. The preoperative surgical treatment objective (STO) was different from that of the conventional Western STO.…”

A New Approach to Set the Absolute Midsagittal Plane of the Mandible Using a Similarity Index in Skeletal Class III Patients with Facial Asymmetry

“…Traditionally, SSRO has been preferred over IVRO in asymmetric surgery due to rapid postoperative recovery and reliable stability through rigid fixation. However, if a large amount of mandibular setback is required for the improvement of facial asymmetry in Asians, IVRO has the advantage of reducing the possibility of injury to the inferior alveolar nerve and less adversely affecting temporomandibular disorders [2,3].…”