as it is, i vaguely recall having white spots on my teeth when i was a kid and my dentist telling my mom "but, that's a good thing". it must have been fluorosis, and it would have been from overbrushing rather than swallowing - and from drinking an insane amount of water, because my mom smoked three packs a day in the house.

it's in the same spots as it used to be. 

so, it's probably evidence that my fluoride stores are rebuilding to what they used to be.

but, i can hold out hope that it's more than that.