My nephew fell once at day care and pushed one of his front teeth back a fair bit. Ouch must have hurt the poor bugger. My sister took him to the dentist to get it checked out and they said as its just one of his baby teeth, it will fall out eventually and then the other tooth to come through should be fine.

I would take him to the dentist just to make sure its ok to leave it as it is, but yeh i dont think they can really do much with baby teeth, except just wait for it to fall out and the new one to come through. With waiting.. is he in pain? Usually they will see you right away if your in pain. Just tell them when you ring up what is happened and see if they can take a look sometime during the day.

Hope hes ok.