Medical advice wanted: Has anyone ever owned a dog with a tooth in it's nose canal??

Hi everyone... I have a Jack Russell male who liked fence fighting (we have secured all those spots so he cannot do it anymore). 2 years ago he got into a fence fight with a bigger dog, and the bigger dog bit down just the right way to push one of Apollo's canine teeth up into his nose canal. Our vet was able to stitch his nose and mouth up, but he didn't want to remove the tooth as he felt he didn't want to mess around with the nerves there. So the tooth is still in there, and he sounds like a pug sometimes. His breath is extremely bad these days, and tomorrow he is booked for another dental at our vet, but I'm worried that it could be the tooth in his nose giving him trouble. I'd just like to hear your opinion please. Could that tooth be the problem?