Silicone implants are the most traditional materials for chin augmentation but are becoming increasingly diversified in models with time. It also comes in a single-piece oval and U shape. Surgery mainly corrects chin retraction to anteroinferiorly extend the jaw angle from the silhouette, but it is unable to elongate the proportion of the frontal face, which is suitable for patients who have mild retraction and a sufficiently long chin for regional correction or mild adjustment. Besides, for some patients with inadequate chin bone or skin conditions, silicone implants are likely to present a depression at the interface of the implants and bones at both sides of the chin; thus, results may not be quite natural. At present, limited by patient conditions and the implant size and models, the application scope of silicone implants is not as extensive and flexible as that of Medpor and Sili-Tex implants; thus, they are gradually being replaced.
Similar to other chin implants, the surgery is conducted by creating an incision at the intraoral lower gingiva, but the incision for silicone implants is the smallest (approximately less than 1.5 cm), and there is no need for screw fixation after implantation as long as the implant is stitched to the periosteum and naturally attached to the bone. Therefore, surgery is simple and requires a short recovery time, and emplaced silicone implants become fully stable within approximately 1 month.