1.Define orthognathic surgery. Discuss its indications, contraindications, and treatment planning. 2.Describe the management of skeletal Class III malocclusion. , mandibular prognathism.emphysise on Bilateral Sagittal Split Osteotomy (BSSO) with indications, technique, and complications. Explain bimaxillary surgery and its indications. genioplasty,describe each surgical steps of the procedure in detail and its role collectively prepare answer for management of skeletal Class III malocclusion. Fonseca's Oral and Maxillofacial Surgery , reffer the following standard mds text books · Proffit – Contemporary Orthodontics · Bell, Proffit & White – Surgical Correction of Dentofacial Deformities · Naini & Gill – Orthognathic Surgery: Principles, Planning and Practice