ya know I don't know what the deal was, but I had to go to the hospital and be put under for mine. (I had braces so I am guessing something affected it).
I was a swollen chipmunk for weeks, and I had a wickedly painful reaction to the anesthetic when it wore off.
The best part is spitting out the goat stiches in your mouth once they start disolving after a couple of weeks. You wanna talk about bad breath WOAH!!
Everyone else I knew had there's done in a chair with just local freezing. Guess everyones wisdom situation is different.