Fluorine is the lightest member of the halogen group and documented as one of the most reactive and electronegative of all chemical substances. It is poisonous, pale, yellowish brown gas. Fluorine does not occur free in nature, therefore, fluorine in the environment is found as fluorides and represent about 0.06-0.09 per cent of the earth's crust. Acute and chronic exposure to excessive oral fluorides has many adverse effects. Therefore, the aim of this review is to bring forward data for dental personal and dental students about fluoride intoxication as fluoride is used excessively in dentistry due to its anti-cariogenic effect.
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