Restorative & Materials · single question

After consuming acidic foods, what is the minimum time a patient should wait before brushing?

  1. 20 minutes
  2. 30 minutes
  3. 40 minutes
  4. 60 minutes
Show answer and explanation

Correct answer: C. 40 minutes

  • A. INCORRECT. 20 minutes is generally considered too short for enamel to recover.
  • B. INCORRECT. 30 minutes is a common minimum, but this recall set keys a longer wait.
  • C. CORRECT. This question keys 40 minutes as the minimum wait so softened enamel can reharden. General guidance is to wait at least 30 to 60 minutes.
  • D. INCORRECT. 60 minutes is a safe upper recommendation but not the minimum keyed here.

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