An overdenture is a denture, the base of which covers one or more teeth, prepared roots or 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. The overdenture is not rigid in the mouth; it is removable. An overdenture is a complete or partial denture that sits on top of or is attached to underlying tooth structures or dental implants.

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