What do I do? I think my hamster lost her tooth..?

My hamster was chewing on the wire of her cage. Her teeth got stuck and she begand flailing all over the cage and when she finally got them off the wire, there were traces of blood on the wire and she was really scared.. She's playing in her ball right now.. but how worried should i be? Should i take her to a vet? how can i tell if she lost her tooth or not? is there a place i can call for answers like petsmart or petco or something?