Which term describes the resistance of the denture base to vertical seating forces and relies on structures such as the buccal shelf and retromolar pad in the mandible and the palate and alveolar ridge in the maxilla?

Which term describes the resistance of the denture base to vertical seating forces and relies on structures such as the buccal shelf and retromolar pad in the mandible and the palate and alveolar ridge in the maxilla?

• A. Resistance
• B. Retention
• C. Support
• D. Stability

Answer: (C)

Support is the term for the denture base’s resistance to vertical seating forces. This support comes from the tissues and underlying bone that bear and distribute the load when the denture seats. In the mandible, the buccal shelf and retromolar pad provide posterior basal support, while in the maxilla, the palate and alveolar ridge offer broad contact that helps hold the denture up against seating pressure. Retention, by contrast, refers to resisting dislodgement away from the tissues (often via border seal and suction), and stability refers to resisting movement in function in multiple directions.

Support is the term for the denture base’s resistance to vertical seating forces. This support comes from the tissues and underlying bone that bear and distribute the load when the denture seats. In the mandible, the buccal shelf and retromolar pad provide posterior basal support, while in the maxilla, the palate and alveolar ridge offer broad contact that helps hold the denture up against seating pressure. Retention, by contrast, refers to resisting dislodgement away from the tissues (often via border seal and suction), and stability refers to resisting movement in function in multiple directions.