In some cases, not all teeth need to be removed and replaced. In this situation, a partial denture may be necessary. Some of the remaining teeth may need to be restored with fillings or crowns, but are worth keeping to stabilize the partial. Most people like keeping at least two teeth to anchor the denture in and keep it in place when speaking and chewing. As the remaining teeth fail, they can be added to existing partial. The lifespan of a partial all depends on the care given to keep the remaining teeth and the wear and tear of everyday use. A partial must be kept in the mouth daily as teeth are always moving and leaving it out for an extended period of time may make the partial no longer custom.
Dr. James L. Johnson