I am so sorry to hear of your jaw pain. I had some needed dental work, and because I could not open my mouth wide enough, I had to get Botox injected in my jaw muscles - at MY Cost of $1,400. Insurance does not cover that! And now I see that Prednisone may cause cavities! I am pretty angry that doctors just throw Prednisone at patients without a serious discussion of possible side effects. Our "corporate owned" doctors are so overworked and I think our medical system is in big trouble.