HI Amy -
When is Dental Day scheduled for? I know you are scared and worried (who wouldn't be?) but your civvie will be so much better for it - really!
Last summer my diabetic cat Molly and one of my civvies, Lincoln, had dental surgery on the same day. I felt like a lot of anticipatory measures were taken for Molly (with her diabetes) that Lincoln was kinda being treated as second fiddle and i was worried. Both did beautifully!!
When they came home they were hungry - and i mean hungry! I was surprised by this given both had extractions and had been through so much that day. I guess since they hadn't eaten since the night before they were ravenous. Offer your baby a little food upon his return home but obviously, just wet food (not that you would dare give dry food anyway

).
We came home with Bupe for pain. I remember whining and crying that i didn't want to jab a needless syringe in their mouths given how sore they must be. I think it was Jess (Jess & Earl) who wrote and said something like 'suck it up, they need pain meds, 30 seconds of discomfort will be forgotten for hours worth of relief. She was right.
Expect drooling. I wish someone would have warned me about that. I think i was thrown by the fact that one drooled and the other didn't at all. My civvie Lincoln was leaving actual puddles behind! It was perfectly normal and after a few days he stopped.
I wish you the best of luck - please ask more questions as you think of them and of course let us know how he does on the big day. Thinking about you, Michele