A 4-year-old patient lives in an area WITHOUT fluoridated water. What is the recommended daily fluoride supplement dose?

For a child aged 3–6 years in an area with <0.3 ppm fluoride in the water supply: the ADA recommended daily supplement is 0.50 mg/day (sodium fluoride). For ages 6–16 years, the dose increases to 1.0 mg/day. For ages 6 months to 3 years (water <0.3 ppm), the dose is 0.25 mg/day. The supplement provides systemic fluoride for incorporation into developing teeth and topical benefits from the oral exposure.