My kitten is believed to suffer a broken jaw is this something that can heal on its own or do I need a vet? Won't eat or drink

I would take your kit to the vet right away but who diagnosed a broken jaw, that is critical to the kittens well being certainly.

Please take the poor thing to a vet!

More than likely this cat was hit by a car,and could have other internal injuries.The jaw will probably need surgery.Please take it to the vet,she could die from dehydration,and also become infected.Let us know how she is doing.