bimaxillary protrusion
Condition where both upper and lower jaws project forward beyond normal facial proportions.
Full Definition
Bimaxillary protrusion is a dentofacial deformity characterized by forward positioning of both the maxilla and mandible, resulting in a convex facial profile and lip incompetence. This condition is often associated with dental crowding and may have functional implications for speech, mastication, and airway. Surgical correction typically involves bimaxillary orthognathic surgery with setback procedures of both jaws, often combined with orthodontic treatment. The condition is more prevalent in certain ethnic populations and requires careful treatment planning to achieve functional and aesthetic balance.
Usage
Usage note: Distinguish from unilateral maxillary or mandibular protrusion in clinical documentation.
In Context
- "The patient exhibited severe bimaxillary protrusion with significant lip incompetence and dental crowding." — Initial consultation note
- "Bimaxillary setback surgery was planned to address the patient's facial convexity and functional concerns." — Treatment planning document