Some TMJ patients do report their troubles started after they had dental work done but one would think this would be due to problems with their bite. You should probably have your bite checked out by your regular dentist.
http://www.tmj.org/contact.asp
Some dentists do specialize in TMJ. You can find a couple in the URL below. Perhaps you should have one do an examination of your jaw and bite (?). Note that TMD is a complex problem and many treatments have undergone the rigor of scientific study - its a kind of grey area with regard to treatment.
http://www.tmjscale.com/tmj-dentist-list.html
Good luck!