A total prosthesis is a prosthesis that replaces all of the remaining natural teeth with artificial ones.
Hence, a total prosthesis is fabricated for patients with no teeth, and it serves the purpose of restoring chewing ability and esthetics. A total prosthesis is often referred to as a complete denture. The retention of a total prosthesis is achieved through adhesive forces between the mucosa and the prosthesis. A saliva film forms in between the prosthesis and the mucosa, similar to a water film between sheets of glass. Therefore, during prosthesis fabrication, it is very important to create an optimal seal at the edges of the prosthesis. Otherwise, the prosthesis would fall out or dislodge every time the mouth is opened. Prostheses designs can vary. The design process starts with artificial tooth selection. In this picture, cheap teeth can be seen at the top and expensive teeth can be seen at the bottom. In both cases, the teeth are made of plastic, also called acrylic. Ceramic teeth are sometimes used. Plastic teeth are more cost effective for the dentist and the technician. Contemporary plastic teeth can provide better and cheaper results than ceramic teeth. Another important disadvantage of ceramic teeth is that they will break immediately if the prosthesis falls by accident. Often, a transparent palatal plate is fabricated as well (called a clear palate). This is supposed to create a less artificial appearance.
Incorrect straining and/or overstraining of the jaws by an ill-fitting prosthesis can lead to increased jaw ridge resorption. This frequently results in inadequate support. To reduce pressure from the prosthesis as much as possible, the base should be supported by a large area in relation to the chewing area. Tooth replacement up to the 6th tooth is completely adequate; it can handle the stress between chewing pressure and the prosthetic base. Despite the various types of prostheses, a total prosthesis remains a compromise solution. Fortunately, most patients nowadays are spared from a total prosthesis because of bone reconstruction surgery and tooth implants. Total Prostehsis VideoTotal Prosthesis