Overdenture is a removable partial or complete denture that covers and rests on one or more remaining natural teeth, roots, and/or dental implants.

This means that it is a denture which can be fabricated on remaining teeth or on dental implants in a mouth with no teeth.

The concept of tooth-retained overdentures is a simple and cost effective treatment than the implant overdentures. When few firm teeth are present in an otherwise compromised dentition, they can be retained and used for overdenture fabrication. This helps improve the retention and stability of the final denture significantly.