That's a hard call Roseann. Anesthesia is always risky for seniors, but those teeth sound like they absolutely need to be fixed for her quality of life. I think I would have all the pre-op stuff done, blood panel and everything else they do for seniors before surgery and then talk it over carefully with the vet and see what he recommends. In the end it's still your decision, but I'm sure you will make the best decision you can. Good luck!