Question

A 4-year-old child living in an area with water fluoride content of 0.5ppm, should be given supplemental fluoride tablet of:

• A. 0.15 mg/day
• B. 0 mg/day
• C. 5 mg/day
• D. 0.25 mg/day

Hint:

Supplemental fluoride tablets are important for children living in areas with low fluoride content in water, but the dosage should be carefully managed.

Answer 1

The Correct Option is D

The question relates to the recommended supplemental fluoride intake for a 4-year-old child in an area with a specific water fluoride content. Ensuring proper fluoride levels is crucial for dental health, aiding in the prevention of tooth decay.

Let's break the solution down step by step:

1. Understanding Fluoride Requirements: Fluoride is important for dental health, particularly in children, as it helps prevent cavities by making the teeth more resistant to acid attacks from plaque bacteria and sugars.
2. Assessment of Current Fluoride Exposure:
   • The question states that the water fluoride content is 0.5 ppm.
   • For children aged 3-6 years, the recommended optimal fluoride exposure is around 0.7 to 1.2 mg/day, considering both water and other sources like food and toothpaste.
3. Determining Supplemental Fluoride Needs:
   • Since the water fluoride level is 0.5 ppm, which is below the lower bound of the optimal range (0.7 ppm), supplemental fluoride may be needed.
   • For a 4-year-old in this scenario, standard guidelines suggest providing an additional 0.25 mg/day of supplemental fluoride to reach optimal fluoride exposure.
4. Evaluating the Given Options:
   • 0.15 mg/day - This amount is insufficient to make up for the fluoride shortfall.
   • 0 mg/day - No fluoride supplement would not address the deficiency in optimal fluoride level.
   • 5 mg/day - This is excessively high and could lead to fluorosis, which is harmful.
   • 0.25 mg/day - This is the correct choice, addressing the fluoride deficit safely.

Conclusion: Based on the analysis, a 4-year-old child living in an area with a water fluoride content of 0.5 ppm should be given a supplemental fluoride tablet of 0.25 \text{ mg/day}.