had 2 of mine taken out, one from top other from bottom, the dentist said that my jaw was too small for the amount of teeth i had and was causing the tooth to grow back the way into my jaw, it eventually got infected and thats what i went to the dentist for, i couldnt eat anything before it due to the pain, was awake when he pulled both of them out, felt like my jaw was gonna come away in his pliers! after it i can say i didnt feel any pain, although i did spend the next week playing about with the stitches in my mouth lol