I awoke from having all four removed as a teenager (smarter people have to have them taken out early doors you see) feeling only groggy, no real pain whatsoever. Possibly because I was pumped full of pain killers.
They gave me an entire 5 minutes to recover then basically forced me out to the car where - whilst sat next to my mother - I vomited up a good size bag worth of blood. Apparently you swallow like a litre of blood or something as your sat there.
Enjoy!
I had all four done at once. A very light version of a general anaesthetic with loads of injections. Took an hour with a LOT of drilling but it was fine. ****ing painful about three hours later when the injections wore off but then the pills he gave me kicked in. Uncomfortable for a week (and you look a bit of a ****) but otherwise its no big deal.
Mine were deep but crooked. If yours are already coming out they literally just give it a tap and the whole thing takes ten minutes. If they are deeper its the full monty....