yikers.
yeah, i agree totally, some dragons ya cannot get that mouth open, and a vet can do things we cant do on our own.
my concern would that it might be mouth rot (stomatitis) ... which my rescue has but the damage it has done is severe b/c they let it go for a LONG TIME - but, if you catch it early on, you can manage it.
i dont know for sure, i just hope you can get him to a herp vet. GOOD LUCK and let us know whats going on please. i personally have never had my other healthy dragon lose teeth that i am aware of, or have a bloody mouth, so i kinda automatically am thinking gum disease or mouth rot.
best of luck.