Public Health · single question
What is most relevant about fluoride for caries prevention?
Show answer and explanation
Correct answer: B. Fluoride ion substantivity
- A. INCORRECT. Bioavailability matters for systemic effects, less for topical caries control.
- B. CORRECT. Substantivity, the sustained retention and slow release of fluoride at the tooth surface, drives ongoing topical protection.
- C. INCORRECT. A static enamel concentration is less important than sustained availability.
- D. INCORRECT. Salivary absorption is not the key topical mechanism.