When I first started eating a lot of sugar, which was mainly coming from candy, my teeth were pretty sore the very next day. Since then (about 6 weeks) they have been on/off sore better never bad enough to not eat anything. These last couple weeks have been pain free. I’ve also never had many tooth problems, but I just noticed a chip or something at the top of one of teeth right by the gum. I can’t see it really but I can feel it. The sore teeth don’t really bother me, but the chip sucks.