mandibular advancement

Full Definition

A type of orthognathic surgery where the mandible (lower jaw) is surgically repositioned forward to correct Class II skeletal malocclusion, improve facial aesthetics, or treat obstructive sleep apnea. The procedure typically involves bilateral sagittal split osteotomy (BSSO) and is often combined with other jaw surgeries. Patients require orthodontic preparation and may need temporary intermaxillary fixation during healing. Recovery involves dietary restrictions and gradual return to normal function over several weeks.

In Context

• "The patient underwent mandibular advancement to correct severe Class II skeletal pattern." — Surgical procedure summary
• "Post-operative edema is expected following mandibular advancement and typically peaks at 48-72 hours." — Patient education materials