Sorry -- I did not see this earlier. I just had dentals done on two of mine. I had the pre-blood work done. That just lets the doc know if there are any significant health issues that they don't know about. Makes sure they are not anemic, low or high sugar levels, that sort of thing. Then I made sure they were experienced with anesthesia for small dogs. Actually I had already had that discussion when I picked them for our vet, and knew they were. But I went over it again. They had a whole checklist of information they went over with me too. They polished the teeth and did ultra-sonic scaling. They also had me sign that it was okay for the vet to pull teeth that were a problem. They monitored heart & respiration during and after surgery/procedure. I asked for pain meds for after too. One of mine needed some teeth pulled so they also got anti-biotics after.
I was nervous as this was the first time either of mine had anesthesia but they did fine. Ben even was neutered at the same time and although he had a rough day after, by the 3rd day they were both doing well. I had to feed Ben soft food for 3 days because of his pulled teeth but he started eating the kibble on his own the 4th day. Don't let the first day worry you. Ben was very lethargic and even cried. Broke my heart. But I knew from what they told me to expect that he might be feeling rough for a couple days. Candy had no teeth pulled and she was back to herself as soon as we got home. Good luck -- they are really very good with these things and there is not much to worry about. We have to worry a little -- it's our job.