Dental Ramu, a 3 year 8 month old child is living in an area where fluoride water supply consists of 0.4 ppm. Fluoride supplement needed is A 0.15 mg B 0.25 mg C 0.50 mg D 1.0 mg 💡 Explanation Ramu, a 3 year 8 month old child is living in an area where fluoride water supply consists of 0.4 ppm. Fluoride supplement needed is ✓ Correct Answer: B. 0.25 mg