The chin is an area of the face that greatly determines the definition of the facial profile. It can be projected or retracted on occasions causing an imbalance in the contour of the face. The chin surgery is the procedure designed to improve the jaw line and therefore the facial appearance by increasing or reducing its projection. It can be done alone or in combination with other facial surgery. It is performed through maxillofacial surgery or by the placement of silicone alloplastic implants.