Have a look at the thread "Is this just a toddler phase? He used to eat so well"...we've been discussing exactly this there and there's already some ideas down.

It can be SO frustrating! At this stage my thinking is that, I don't mind so much what DD gets into her, as long as she eats something. I think they pick up on our anxiety too....I know that if I feel uptight and stressed when I offer her food that she probably won't eat, she won't eat it. As I said in the other thread...the other day I offered a piece of toast and feigned disinterest...and she eventually ate it. It was 2 hours later, but she ate.

Taking her to the store to pick out her own fruit has been working too.

My DD got her 2yo molars very early and is hitting this fussy eating stage earlier than 2...so it's probably just the normal toddler phase that we all get eventually, rather than teeth so much.