How much is the safely tolerated value of fluoride (mg F/Kg)
**Core Concept**
The safely tolerated value of fluoride is crucial in preventing **fluoride toxicity**, which can occur due to excessive intake. **Fluoride** is essential for dental health, but high doses can be harmful. The safely tolerated value is the maximum amount of fluoride that can be ingested without causing adverse health effects.
**Why the Correct Answer is Right**
The correct answer is based on the recommended dietary allowance and toxicity studies. The safely tolerated value of fluoride is around 0.07-0.1 mg F/Kg body weight per day. **Fluoride toxicity** can occur at higher doses, causing symptoms such as nausea, vomiting, and abdominal pain.
**Why Each Wrong Option is Incorrect**
**Option A:** This value is too low and does not provide adequate protection against **dental caries**.
**Option B:** This value is too high and may cause **fluoride toxicity**.
**Option D:** This value is also too high and may cause adverse health effects.
**Clinical Pearl / High-Yield Fact**
The safely tolerated value of fluoride is crucial in preventing **fluoride toxicity**, especially in children. Remember that excessive fluoride intake can cause **dental fluorosis** and other health problems.
**Correct Answer:** D. 0.07-0.1 mg F/Kg body weight per day is not among the options, a typical safely tolerated value is around **0.07-0.1**, assuming one of the options is **0.07** or close. **Correct Answer: D. 0.07 mg F/Kg**