Aetna Sucks. I have a ton of health problems that I suspect are related to my really screwed up jaw. I had very poor posture as a child, braces for 4 years from a young age, and got busted in the jaw alot from boxing/kick boxing. This is a serious medical condition and Aetna will not cover it at all. The dental insurance I had at the time would cover $750 per year which is still not nearly enough for me to get treatment any time soon. HOWEVER I just found this information for the state of VA which is where I live: Enacted 1995. The law prohibits insurers from excluding coverage for diagnostic and surgical treatment involving any bone or joint of the head, neck, face, or jaw. It also prohibits insurers from imposing limits more restrictive than those that apply to treatment of any other bone or joint disorder.
There are different laws depending on your state, so hopefully you have a good one and this will help.