Pharmacology · single question

What is a key mechanism by which fluoride prevents caries?

  1. Increases salivary flow
  2. Decreases the solubility of enamel (forms fluorapatite)
  3. Kills all oral bacteria
  4. Buffers plaque acid as its sole action
Show answer and explanation

Correct answer: B. Decreases the solubility of enamel (forms fluorapatite)

  • A. Fluoride does not act primarily by stimulating saliva.
  • B. Correct. Fluoride forms fluorapatite, lowering enamel solubility and promoting remineralization (also has antibacterial effects).
  • C. It inhibits bacterial enzymes but does not sterilize the mouth.
  • D. Acid buffering is not fluoride's principal anticaries mechanism.

Practice Pharmacology questions Pharmacology study notes

More Pharmacology practice questions