Which of the following statement is are correct 1 Fluorosis is caused by deficiency of Fluorine in b...........

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Which of the following statement is/are correct?

1. Fluorosis is caused by deficiency of Fluorine in body.

2. It is marked by mottling of the teeth and, if severe, calcification of the ligaments.

Select the correct answer using codes given below

1 only

2 only

All of the above

None of the above

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Explanation:

First statement is incorrect. Fluoride is an important mineral required for bone and teeth development. Normal acceptable levels of fluoride range from 1.5 to 4 mg/day. Lower levels can cause fluoride deficiency, while higher levels can cause a condition called fluorosis. Fluoride deficiency results in Tooth decay.
Fluorosis is a chronic condition caused by excessive intake of fluorine compounds, marked by mottling of the teeth and, if severe, calcification