Prosthodontics & Occlusion · single question
What is the immediate next step after removing an alginate impression from the mouth?
Show answer and explanation
Correct answer: B. Rinse under running water to remove saliva and blood
- A. Alcohol immersion is not an approved alginate disinfection protocol and distorts the material.
- B. Correct. Rinse first to remove saliva, blood and debris, then disinfect (spray-and-bag) and pour promptly. Debris left on the surface degrades gypsum surface detail.
- C. Alginate is dimensionally unstable — storage causes syneresis and imbibition. Pour within 10-15 minutes.
- D. Pouring over saliva and blood produces a chalky, inaccurate cast surface.
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