What is the PRIMARY stress-bearing area in the maxilla for a complete denture?

Correct answer: D. Primary residual alveolar ridge (crest)

• A. Incorrect. The palatal torus requires RELIEF (not loading) to prevent soreness and denture rocking.
• B. Incorrect. The midline hard palate has a raphe (thin fibrous midline) that should be relieved, not used as a primary stress-bearing area.
• C. Incorrect. The rugae area serves as a secondary stress-bearing area — not primary.
• D. Correct. The primary stress-bearing area in the maxilla is the RESIDUAL ALVEOLAR RIDGE CREST. This cortical bone area best withstands occlusal compressive forces. Secondary areas include the hard palate and rugae.