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Infection Control · single question

What is the initial/first step when disinfecting a dental impression, before applying any disinfectant?

  1. Rinse the impression under running water to remove visible debris, blood, and saliva
  2. Immediately immerse it in concentrated disinfectant with no rinsing
  3. Place it directly in an autoclave/sterilizer
  4. Allow it to air-dry completely before any further handling
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Correct answer: A. Rinse the impression under running water to remove visible debris, blood, and saliva

The first step in impression disinfection is to rinse the impression under running water to physically remove visible blood, saliva, and debris — this step both protects the disinfectant solution from being overwhelmed/inactivated by organic material and improves the disinfectant's overall efficacy once applied.

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