Hi, I too have very bad jaw/TMJ pain. Before I was diagnosed I went to 7 dentists - 3 specialized in TMJ and face pain. I have worn bite splints, etc. and have paid big bucks for them (in the thousands!).
After 10 1/2 weeks of antibiotics I still have TMJ problems. My back teeth also hurt on one side and the roof of my mouth is numb and painful. The bite splints did not help at all. I am hoping this goes away over time. I think TMJ from Lyme is different than regular TMJ. My LLMD thinks I just need to detox more - because symptoms are a result of my body not getting rid of the dead bacteria (YUCK!). I just bought an Infrared Sauna and hope this will help.
I feel for you - because I am in the same boat.