Chemistry, asked by siscor6489, 9 months ago

A dental disease characterised by mottling of teeth is due to
presence of a certain chemical element in drinking water.
Which is that element?
(a) Boron (b) Chlorine
(c) Fluorine (d) Mercury

Answers

Answered by mindfulmaisel

0

A disease which is characterized by mottling of the teeth is due to the presence of a certain chemical element in drinking water which is fluorine.

Option: (c)

Explanation:

Fluorine is both useful and harmful for our teeth.

Fluorine is used for strengthening and whitening of the teeth Similarly excess amount of fluorine results in the formation of endemic fluorosis a disease in which the teeth is gradually decayed.

Fluorine first causes blackening of the teeth. Then it causes necrosis of the gums and the corresponding vascular part of the teeth. Then there is mottling of the teeth and the teeth gradually falls off.

To know more about endemic fluorosis,

How does excess fluorine atom affect us? Brainly.in

https://brainly.in/question/1994798

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