Prosthodontics is the branch of dentistry pertaining to the replacement of missing parts of the face with an artificial substitute which is also called the prosthesis. The missing parts of the face being replaced by the prosthesis include most commonly teeth and associated parts in the mouth, but can also involve external parts of the face. The prosthesis can either be removed from or fixed to the area where it is intended for. Removable prostheses include complete dentures and partial dentures primarily while fixed prostheses include crowns and bridges as well as implant supported ones. A Prosthodontist is the specialist in this field of dentistry.