Odd News Odd News from en 60 Fluorine Used In Toothpaste Formed In Dying Stars John Hopton for - Your Universe Online From ancient, dying stars to our toothbrushes, the chemical element fluorine which is used in toothpaste was formed in stars of the same type as our sun billions of years ago, scientists from Lund University in Sweden believe. The formation happens towards ... Fri, 22 Aug 2014 23:55:25 -0500 Oddities