I don't always know the fancy names and dr. lingo for things. However if I understand what you are describing with the bad teeth and ulcers, does it look like this?


*graphic pix below*
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We had a client's cat come in a few years ago with this problem. (yes we do sometimes take pix of the animals in surgery, and they are usually under anesthetic when we do it, we take them mostly for client education to show them why preventative measures are important) anyways....

As I recall with this particular cat we had to put it on antibiotics for a week or so before we could even attempt a dentistry because of infection risk. And when we did the dentistry they had to pull several teeth and put on quite a lot of antibiotics afterwards. As I recall the cat is still around and doing fairly well last I knew although the owner is definately more concious (sp?) of the importance of clean teeth.