Alloplastic Chin Implants

Chin implants are composed of synthetic (alloplastic) materials such as silicone, PEEK and porous polyethylene (Medpor) - materials that provide a stable, long-lasting and natural-looking enhancement to the receding chin.


Chin implants augment areas of deficiency and increase the projection of the chin. Tapering into the mandibular bone to which they are attached, their function is to enhance facial contours and provide structural support to the overlying soft tissues


Biological implants made of bone and cartilage have been in use throughout the last century while synthetic implants have been used since the 1940’s. However, today's gold standard for chin augmentation is the use of synthetic alloplastic materials, which provides the firmness and tensile strength of bone. These implants are biologically inert and well-tolerated (biocompatible), and are designed to promote tissue in-growth and secure integration.

Biological implants

Although well-tolerated, biological material (bone graft) has a tendency to undergo resorption after implantation and therefore does not provide the same predictable contouring usually associated with alloplastic materials.


The biological component successfully used today for facial contouring is fat cells (fat grafting). This technique can be used to restore and volumise the soft tissues of the face. Fat grafting is often used by Dr Sorensen to further enhance the definition achieved with facial implants.

Alloplastic implants

Polyethylene has a long history for use as a surgical implant. Modern polyethylene implants are porous, strong and easily shaped. For this reason they are used in craniofacial reconstruction or for customised augmentation.


For aesthetic contouring, silicone rubber provides an advantageous combination of firmness and flexibility, enabling the implant to wrap around the lower edge of the mandible. Silicone implants come in a wide range of pre-formed shapes, which can be further refined during positioning, if required.

At the Sorensen Clinic we use the following implants


●  Silicone implants

Silicone (silastic rubber) exists in varying degrees of flexibility and firmness and is the most frequently used implant for facial contouring. Solid silicone does not allow tissue in-growth and thus the implants can easily be removed. Modern anatomical silicone implants incorporate a permeable grid pattern to enhance tissue interaction and allow the implants to closely conform to underlying bone structure.


●  PEEK implants

The organic polymer thermoplastic Polyetheretherketone, more commonly known as PEEK is a versatile material used in facial skeletal reconstruction or for advanced contouring of the craniofacial architecture. It is a strong material that can be manufactured to virtually any anatomical shape based on a patient’s CT scan. The use of 3D preoperative digital planning, ensures a very high level of accuracy and precision.


●  Porous polyethylene (Medpor) implants

Porous high-density polyethylene (PHDPE) is a material commonly used in facial skeletal reconstruction and aesthetic chin augmentation. It is a strong inflexible material that is customised (intraoperatively) to the mandibular bone. The material is macro-porous and provides for tissue in-growth (fibro-vascular integration).

 >    Facial Implants

 >    Chin Implant

 >    Cheek Implants

 >    Mandibular Implants