Fluorine is an essential trace element and as fluoride it is a natural constituent of all water and some foods. However, the amounts found from "natural" sources are often not sufficient to help develop decay-resistant teeth and strong bones.
Fluoridation is an adjustment of fluoride levels in the water supply to a level of 0.7 to 1.2 parts of fluoride per million parts (ppm) of water.
Fluoride ingested in water that has been fluoridated is completely safe. Fluoridation reduces tooth decay by 50...
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