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Restorative & Materials · single question

Dental caries forms as a result of:

  1. Cariogenic bacteria alone
  2. Persistence of pH ≤5.5 (critical pH) over time
  3. High sugar in a single episode
  4. Absence of fluoride alone
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Correct answer: B. Persistence of pH ≤5.5 (critical pH) over time

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