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<p>Originally <strong>bone grafts</strong> (bone taken from another part of the body to be used in the face) were used to help reshape the chin. The obvious disadvantage of this is the process of first having to collect a piece of bone from a donor site in the patient’s body.</p> <p><img style="margin: 5px; float: right;" src="../../../uploads/Image_Directory/Treatment_FAQs/TDfacialimpnagorchin190503.jpg" alt="Silicone Chin Implants" width="150" height="169" align="right" border="0" />The first synthetic (or man-made) implants that avoided this problem were designed in the 1950s and were made of solid silicone. These implants are safe, long lasting, and are still a popular choice used by many surgeons today.</p> <p>Rigid <strong>polyethylene</strong> implants are an alternative to silicone and can be screwed into place into the bones of the face to prevent them moving after the operation.</p> <p>Another common implant material used in the U.K. is a synthetic material called <strong>ePTFE</strong> (expanded polytetrafluoroethylene).</p> <p><img style="margin: 5px; float: right;" src="../../../uploads/Image_Directory/Treatment_FAQs/TDfacialimplants010503.jpg" alt="Silicone Implants" width="279" height="115" align="left" border="0" />It is a white "rubbery" material - the same thing used in Gore-Tex™ boots and rain jackets - but of course it is totally sterile and made specifically for medical use only.</p> <p>EPTFE was first used as an implant material in humans in the 1970s as a replacement for small sections of veins.</p> <p>Development of this material into different shapes has allowed it to be used as a facial implant for chin and cheek augmentation, lines and wrinkles in the face, and lip enhancement. Your own body tissues can grow around these implants and help to keep them in place.</p> <p align="right"><em>Silicone chin implants image courtesy of Nagor Limited</em></p> <p><strong>Hydroxyapatite</strong> Implants: medical science has come up with a way to alter coral into an implant material that closely resembles natural bone. It is called hydroxyapatite or simply, H.A. It has both the sponge-like structure and chemical make-up of bone so that the body accepts it completely. The body’s tissue can be integrated naturally and it will not cause the hardness that is sometimes the problem with silicone implants. H.A. is the closest thing to a natural bone graft that scientists have yet invented.</p> <p>Another different approach used by some doctors is the use of human tissue. Some surgeons will use small strips of your own tissue (cut from areas such as the groin) and, after careful preparation, implant these strips into your face. This is known as an autograft and has the benefits of being your own natural material, which will not be rejected by your body.</p> <p>In practice, this procedure is now little used owing to the fact that you will have scars at the point from which the tissue is taken and your donor tissue is difficult to prepare in order to achieve a successful graft.</p> <p><strong>Alloderm®</strong> is another alternative. This uses donated human skin that has been especially prepared by removing the outer layer of skin and freeze drying the layer underneath the surface. Using someone else’s tissue rather than your own is known as an allograft.</p> <p>Careful screening of the material for viruses is undertaken, and the material is specially prepared so that there is little chance of your body reacting to it or rejecting it. A skin test is not required before the insertion of this implant. Over time, this biological implant grows into the patient's own natural soft tissue, but it may not last as long as other forms of implant.</p> <p>Your own <strong>fat</strong> may also be suggested as an implant material. This can be collected from different parts of your body using liposuction and then injected into different parts of your body. Please see our <a href="../../../Treatments/Fat-Transfer-Injections" target="_self">fat transfer</a> section for more details.</p> <p>Certain <a href="../../../Treatments/Dermal-Filler-Injections" target="_self">dermal fillers</a> may also be suggested as an alternative to the implant materials described above.</p> <p>These are particularly used for lines and wrinkles or “plumping out” the cheeks.</p>
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