Patients who want to reinforce jaw lines but do not want to obviously broaden their face choose a silicone mandible implant to reinforce the mandible contour. Silicone implants are relatively thin and soft and are used for the holistic correction of the concave mandible angle and body to make the sharp face relatively plump and round rather than make the mandible angle prominent like Medpor. Therefore, patients still retain the soft lines of the mandible after the operation, which better satisfies the needs of female patients. Another objective of this surgery is to fill the depression at the lower face or to thicken the masseters and buccal soft tissues, which support the cheek skin by the emplacement of silicone implants into the deep skeleton; it thus replaces autologous fat grafting in lateral cheek augmentation that is prone to absorption or loss and offers relatively long and stable results.
The procedures of this surgery are similar to those using Medpor. First, a 3–4-cm incision is made at the lower gum for subperiosteal space dissection, and then, appropriate sizes of silicone mandible implants are emplaced at the mandible surface. Soft in texture, silicone implants cannot be fixated by bone screws but require 1 month of internal wound healing to fully attach to the mandible and become stable.