What are the sideffect of wisdome teeth being pulled?

Paresthesia or temporary numbness because of nerve damage. I had one wisdom tooth pulled out two weeks ago and my lower lip, chin, gums and face are still numb. I am also having constant headaches since then. The dentist said that could really happen and there is nothing they can do about it. They said the nerve will heal itself depending on how your body acts to it, it could take weeks, months or even years. And there is a very little chance that it could be permananent. So if you are planning to have your wisdom tooth removed, think about it, discuss it thoroughly with your dentist or oral surgeon. This is the worst thing that ever happen to me.