When I got my 4 teeth out last year I had 12 Local injections and was a awake the entire time. Procedure took about an hour. After that the only pain killers I had were ibuprofen with codeine over the counter stuff. Felt absoultely no pain what so ever but I did take the meds at the times suggested rather that waiting to feel pain before taking them. No the less I was expecting a nightmare and ended up having a mildly unpleasent experience in the dentists chair and a slightly uncomfortable feeling mouth for a few days.