Genioplasty: a physiological approach.

Genioplasty results in aesthetic and functional changes to the chin and perioral areas. A physiological approach combines osseous and soft tissue reconstruction to produce a superior result that is especially important in individuals with bilabial incompetence. In this review, facial muscle hyperfunction and vertical maxillomandibular excess are identified and their treatment outlined. The modified Michelet genioplasty, an ideal technique for vertical chin reduction and/or advancement, is described.