Wisdom teeth are often bracketed with the appendix or tonsils- something that has outgrown its usefulness and is now defunct. In some ways that can be true of wisdom teeth though it is not always the case. The reason why wisdom teeth are seen as a problem is because as we have evolved, our mouths have generally become smaller, which leaves little room in the mouth for the wisdom teeth to break through and if their route to fresh air is blocked, they have a habit of growing in all manner of directions without even showing, which is why they have to be removed. This whole process normally occurs from the age of 17 and can be for some a very traumatic and painful time. For the lucky ones among us, the teeth will erupt, with a little discomfort, quite normally and if they have the room and cause no problems at all, there is no reason for them to be removed- ever. But for most, the teeth do have to be removed and this can be quite a delicate operation. Wisdom teeth are deeply rooted into the jaw and it takes extreme forces to pull them out, especially if the tooth is not showing. Normally, all four would be done at once, usually in a hospital, because of the complexities involved and afterwards, there is the recovery which too, needs to be handled delicately.