How does a full denture receive its support and retention?

• A. Underlying tissues
• B. Implants
• C. Cemented crowns
• D. Gingival veneers

Answer: (A)

A complete denture relies on the tissues it rests on for both support and retention. The denture base sits on the mucosa overlying the residual ridges, and the underlying bone helps resist masticatory loads. This tissue foundation distributes forces from chewing and keeps the denture stable during function. Retention in a traditional full denture comes mainly from a close, comfortable adaptation of the denture to the tissues and the peripheral seal that creates suction with the saliva—again, a result of the tissue foundation in contact with the denture.

Implants would change the retention mechanism by providing additional anchorage, not typical for a conventional full denture. Cemented crowns are used to restore existing teeth, not to support a complete denture, and gingival veneers are cosmetic and do not provide the functional support or retention of a denture.