The removable prosthesis are artificial substitutes of the teeth, designed for functional and cosmetic reasons, recommended for patients with partial or total absence of the teeth. They can be removed from the oral cavity by the doctor or by the patient himself.
They are recommended for a partially edentulous dental patient who desires to have replacement teeth but cannot afford to have a bridge (a fixed partial denture) for any number of reasons, such as a lack of required teeth to serve as support for a bridge (i.e. distal abutments) or due to financial limitations.
Removable prosthesis is of two types
Today, the removable prosthesis are often used thanks to their advantages. They contribute to the improvement of:
Still, they also have a series of disadvantages:
Women outrun men in the statistics.
The most common situations which require them are:
- major connectors (arch bars, palatal strap, etc.)
- tooth-carrying bases (saddles)
- minor connectors that join the body of the prosthesis to the retainer.
Retainers serve to hold the prostheses to the selected abutment teeth in such a way that it can be removed by the patient. A retainer may fit directly over a natural tooth or it may fit indirectly around or into an artificial crown which has been cemented onto a prepared tooth. Retainers can be either custom-made or prefabricated. Retainers consist basically of a positive portion and a negative one which fits around the positive.
Retainers must fulfill the following requirements:
The body of the partial denture is comprised of tooth-carrying denture basis, minor connectors and a major connector (stabilizing element). It is attached to the selected abutment teeth through retainers. For proper integration of a partial denture body into the stomatognathic system, the following principles must be observed:
In designing a partial prosthesis we should take in consideration simplicity, suitability and strength of the structures.
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