i had a lot of teeth pulled when i was young, and the injections into the gums were the painful bit...it sodding HURTS!!!! then you wander about feeling like you've just had a bad trip for hours...the dentist was one of incredibly unsympathetic 'hates small boys' type of dentist that you get in English public schools.
my wisdom teeth have mostly come through but i'm hoping i won't need to have them taken out...well, not after reading all that anyway