Oral Hygiene Instruction and Counselling · CDA

Why is nighttime brushing especially important?

  1. Saliva flow decreases during sleep
  2. Teeth grow faster at night
  3. Dental plaque disappears overnight
  4. Fluoride cannot work during the day
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Correct answer: Saliva flow decreases during sleep

Low saliva flow at night reduces natural buffering. Removing plaque before bed protects against caries and gingivitis.

Difficulty: Medium Question 14 of 20

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