A denture is delivered from the laboratory. What should be done before inserting it in the patient's mouth?

Correct answer: A. Verify the prescription and patient identity, then disinfect the prosthesis

• A. CORRECT. Two things must happen. First, VERIFY that the case corresponds to the correct patient and prescription — delivering the wrong prosthesis is a real and avoidable error. Second, DISINFECT it: prostheses travel between the laboratory and the office and can carry contamination in both directions. Use an EPA-registered intermediate-level disinfectant compatible with the material, or an appropriate immersion disinfectant, then rinse thoroughly before insertion.
• B. Acrylic resin CANNOT be autoclaved — heat causes distortion, warping, and loss of fit.
• C. Both the laboratory and the office share responsibility for disinfection at each transfer point; the office must not assume it was done.
• D. Overnight immersion in glutaraldehyde is unnecessary, damages acrylic over time, and leaves toxic residue requiring extensive rinsing.

Note: CDC guidance: disinfect all items moving between the operatory and the laboratory in BOTH directions, and communicate with the lab about which method was used.