A 4-year-old child lives in a non-fluoridated community (water fluoride <0.3 ppm). According to ADA guidelines, what is the recommended daily fluoride supplement dosage?

According to the ADA and American Academy of Pediatric Dentistry (AAPD) dietary fluoride supplementation schedule: Children aged 3 to 6 years in areas with water fluoride <0.3 ppm should receive 0.50 mg fluoride per day. The schedule is: Birth to 6 months: no supplement; 6 months to 3 years: 0.25 mg/day if water fluoride <0.3 ppm; 3 to 6 years: 0.50 mg/day if <0.3 ppm; 6 to 16 years: 1.00 mg/day if <0.3 ppm. Supplements are not indicated if water fluoride is ≥0.6 ppm. At 4 years old with no fluoride in water, the correct dose is 0.50 mg/day.