David Tobler;4705488; said:From what I could see in those pictures previously posted, it seems the snake had an infection in it's lower jaw. You can see the yellowish, cheesy puss buildup fairly well in those pictures. I'd only assume the vet cleaned out the jaw, and gave some antibiotics to your snake. Though, I'd be surprized that one injection would rid your snake of the infection. It's possilbe the vet filled in the infectous hole with something to keep it clean while the antibiotics and the snake's immune system had time to catch up and heal the jaw.
If you looked that Green tree python isn't mine and that picture was posted by another member. Her bump was no where as serious as that and had no sign of infection inside the mouth.