Fluoride to prevent cavities.
fluorine
fluids and chemicals
It is the element Fluorine. It is added as Fluoride.
to help prevent tooth decay, just like there is fluoride in tooth paste to prevent tooth decay. The fluoride added to water is no where near as high concentration as in tooth paste though
Fluoride.
Only a lot of compounds in tooth paste (mixture of many compounds), no elements.
The tooth paste is not so abrasive and the enamel is not so fragile. The abrasive is added to help cleaning.
Fluorine
Fluorides of sodium and potassium, stannous fluoride, etc.
I do not believe that anything is added to help tooth decay. Fluorides are added to fight (not help!) tooth decay.
tooth paste is alkaline
It is called tooth paste because the paste is for cleaning you teeth for example it can protect your teeth from cavities or gum pain also can whiten you teeth with special tooth paste products and you brush it on to your teeth TOOTH-PASTE.