A patient with a maxillary implant-supported denture develops peri-implant mucositis from plaque accumulating around the prosthesis. How should the prosthesis be modified?

Correct answer: A. Reshape the tissue-facing surface to be more convex and cleansable

• A. Correct. A convex, smooth, accessible surface bulges slightly outward, reducing the nooks where plaque and debris collect and allowing hygiene aids to reach the area.
• B. Incorrect. Concavities trap food and biofilm, worsening the mucositis.
• C. Incorrect. Undercuts create more plaque-retentive areas.
• D. Incorrect. A rough surface dramatically increases biofilm adhesion.