Background: Chin contour is an important aspect of lower facial aesthetic with genioplasty being indicated for correction of microgenia and other congenital abnormalities. Traditionally, both alloplastic implantation using various materials including silicone h, and osseous genioplasty techniques have been utilised. However, silicone implants have been associated with various complications including infection, soft tissue deformities and bony resorption. This scientific report will present a case of a 36-year-old lady who presented with a mandibular symphyseal fracture, with a silicone genioplasty implant overlying the mental foramen and fracture line with significant associated bony erosion. After removal of the implant and subsequent fixation of the fracture, the patient underwent orthognathic surgery including genioplasty to correct the defect with a good cosmetic outcome. This report will also compare various alloplastic compounds used in genioplasties in the past, including polytetrafluoroethylene and silicone and resulting rates of resorption with these compounds. It will also outline other rare cases of bony resorption with silicone implants when used at head and neck regions including the temporomandibular joint. A greater awareness of the risks of silicone implants compared with osseous genioplasty techniques will ultimately lead to greater long-term outcomes for patients presenting with lower facial defects.