When I was getting my wisdom teeth out a few years back, (more than I care to mention ;) ) things didn't work out so well for me. They ran an IV in my arm and whatever was in that concoction knocked me out so they could do the procedure. However, I was supposed to wake up about 30 min later, but they couldn't get me "unsedated". 2 hours later I woke up with a splitting headache and felt terrible. I never wanted to leave that
San Francisco dentists office so badly in my life. Apparently they had forgot to do something, but by the next morning I was feeling okay.