Many people do not have wisdom teeth because of evolution. This might sound funny or even unreal but this is real - just like some people that are not born with appendix. The wisdom teeth should come in a total of 4 teeth on each person, however some people only develop 1, 2 or even none. Others (like myself) have all of them. There is also a possibility that you have them but they never come out, which means they stay inside of your gums forever. These teeth can cause lots of pain and can destroy the job done by braces, that is why it is always a very good idea to have them surgically removed by a professional dentist, that way you do not have the risk of having your smile ruined.