maxillary impaction: Definition, Uses, and Clinical Overview
maxillary impaction is a planned surgical repositioning of the upper jaw (the maxilla) upward. It is most commonly discussed in orthognathic (jaw) surgery, often as part of a Le Fort I osteotomy. In plain terms, it reduces excessive vertical height of the upper jaw to improve bite and facial balance. It may also be described in orthodontic-surgical treatment plans for open bite or a “gummy smile.”