linguistic:paraphrasing
Other surgeries

Orthognathic surgery – surgical cutting of bone to realign the upper jaw (osteotomy). The bone is cut then re-positioned and held together by wires or rigid fixation plates to ensure there's no anterior-posterior discrepancy, also to reduce scarring as it reduces growth. Single piece or multi-piece osteotomy exist. Single piece osteotomy is carried out where there is sufficient alveolar continuity achieved from a successful bone graft. Multi piece osteotomy is performed when there is a notable residual alveolar defect with a dental gap and oronasal fistula (communication between the oral and nasal cavities). The goal of both single and multi piece osteotomy is to displace the maxilla forward to obtain adequate occlusion as well to provide better support for upper lip and the nose and to close any fistulae.