For anyone who may still doubt that headaches can be caused by wisdom teeth, I am here to tell you that yes this is the case. Years ago I was having serous sinus headaches, I was known to have them but these were even worse then anything I had experience before. I went to the doctor and they found nothing in the sinus cavity itself that could be causing these headaches. Months later I started to experience mouth problems and thought I had a cavity and went to my dentist. My dentist found that I had a double impacted wisdom tooth with one tooth on top of another and one of them was pressing against the sinus cavity, no doubt being the cause of those headaches. I also know someone who had serious ear problems a few years ago, went to the doctor several times for it and it turned out they had a bad tooth that needed to be removed. Moral of these stories if you are having severe headaches, vertigo or ear problems and have seen a doctor but they can't determine the problem, see a dentist, there's a chance there could be a serious problem with your teeth.