Overdenture is any removable dental prosthesis that covers and rests on one or more remaining natural teeth, the roots of natural teeth, and/or dental implants. ... An overdenture is usually used for elderly patients that have lost some teeth but not all, rendering them suitable for a set of full dentures.
There are three main types of full dentures: immediate, conventional, and implant-supported overdentures. Depending on your situation and needs, you might temporarily start with one type of full denture and switch to another type later.
Cast metal partial dentures are the most-used option when it comes to partials because they're strong and they're built to last many years.
While less sturdy than cast metal partial dentures, flexible partial dentures are valued for their comfort and flexibility.