http://www.courant.com/features/lifestyle/hc-headaches.artjun22,0,2228672.story
This article is from the Hartford Courant, and discusses how it can be the jaw alignment that could be causing migraines (the periodontist first mentioned even thinks that King Tut suffered from a jaw alignment problem, causing him severe headaches!).
It’s an interesting read. I have already visited a TMJ/myofacial pain specialist and had a night guard made because he said that I grind my teeth at night. I wore the thing for a year and a half straight with no difference. I still have it, of course, but it would just suck the moisture out of my mouth within the first minute of having it in, and I just haven’t been wearing it because I haven’t felt that it was helping me at all. BUT, you never know — the answer for some people could be as simple as a visit to the dentist 
