Which of the following is true of fluoride?

A. It is added to about 25% of community water systems in the United States.
B. It makes teeth stronger and more resistant to decay.
C. A deficiency causes the condition fluorosis.
D. Toxicity is unknown.
E. A deficiency can lead to pica.



Answer :

Final answer:

Fluoride is added to water to strengthen teeth and prevent decay, with a deficiency related to higher cavity rates.


Explanation:

Fluoride is added to about 25% of community water systems in the United States, making teeth stronger and more resistant to decay. A deficiency in fluoride does not cause fluorosis. However, a deficiency can lead to higher rates of dental cavities. Fluoride is well known for its dental benefits in preventing tooth decay.


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