How does fluoride intake during development relate to the prevalence of enamel fluorosis?

How does fluoride intake during development relate to the prevalence of enamel fluorosis?

• A. Inverse correlation
• B. Positive correlation
• C. No correlation
• D. Correlation only after eruption

Answer: (B)

Fluoride exposure during tooth development directly influences how many teeth end up with fluorosis, and to what extent. This is a dose-response relationship: the more fluoride a child ingests while enamel is forming, the more enamel areas become fluorotic, so prevalence rises with developmental fluoride intake. Enamel fluorosis occurs during formation, before eruption, so fluoride exposure after teeth erupt doesn’t create new cases. That’s why the relationship is positive: higher fluoride intake in early life means higher fluorosis prevalence.

Fluoride exposure during tooth development directly influences how many teeth end up with fluorosis, and to what extent. This is a dose-response relationship: the more fluoride a child ingests while enamel is forming, the more enamel areas become fluorotic, so prevalence rises with developmental fluoride intake. Enamel fluorosis occurs during formation, before eruption, so fluoride exposure after teeth erupt doesn’t create new cases. That’s why the relationship is positive: higher fluoride intake in early life means higher fluorosis prevalence.