Fluoride in toothpaste?

Why is it that toothpaste manufactures don%26#039;t use calcium fluoride in their toothpaste, please site your answers if at all possible, thank you.

Fluoride in toothpaste?
Fluoride toothpastes generally use either:


1. sodium fluoride


2. sodium. monofluorophosphate
Reply:Calcium fluoride is a solid and is not water soluble. Therefore, it really wouldn%26#039;t be practical for brushing. And in fact, because calcium fluoride isn%26#039;t water soluble, if you did happen to try to brush with it, virtually no fluoride would coat the enamel of your teeth and you%26#039;d probably either end up spitting it out or swallowing it.





Sodium fluoride is water soluble, and sodium is basically just a spectator ion that doesn%26#039;t really come into play in the actual enamel strengthening that fluoride does.