I am so disappointed in myself, I have not used fluoride toothpaste in 15 years and yesterday i went to the dentist to get my teeth cleaned. Everything was going ok(just a cleaning and a check up) and then the hygenist said ok here Im going to give you a fluoride rinse, I dont no why but I took it and while it was in my mouth I was freaking out and saying to myself what are you doing-- spit it out! It was only about 1/2 an ounce and in my mouth for a minute. So now my tongue hurts, I can feel every little bump and crack. How much damage would this do? On another note my teeth are great, that was the second time I have been to the dentist in over 10 years, so whoever says you need fluoride to keep your teeth healthy is crazy!