Ok so I stopped smoking cigs back in 09. My buddy came over one day with his ecig and a bunch of juices. They were so tasty that I thought, well I have a 510 battery already? Why don't I just go get some 0mg e juice to puff on when I'm not vaping oil? That way I can have a nice taste and bring back that calming effect that cigs had. Well it was good for a few days and them my teeth started to hurt really bad? I know my teeth aren't that good lol but could the Ejuice be negatively effecting me? I stopped and my teeth haven't been hurting anymore. I was going to try again just to make sure.