A maxillofacial prosthesis made of implantable biocompatible material generally onlayed upon an existing bony area beneath the skin tissue to fill in or selectively raise portions of the overlaying facial skin tissues to create acceptable contours. Although some forms of premade surgical implants are commercially available, the facial augmentation implant prosthesis is usually custom made for surgical implantation for each individual patient due to the irregular or extensive nature of the facial deficit. Also called a facial implant.