I don't know. I don't have a lot of information about this, but I was curious what your vet thought about it? I'm sorry that this is happening. I know it can be frustrating not knowing what is going on. There are a lot of threads on here with mouth problems, so if you look in the search bar on the site or type into google, "chameleon forums: mouth problems" then you'll probably find a lot of good information. I hope this helps you!