Did you know that Botox can be used to help with TMJ pain and tightness? If you suffer from this jaw condition, you know how uncomfortable it can be. Botox injected into the jaw muscle can be very effective at offering relief without affecting normal jaw muscle movement. I have been offering this particular injection for over a year now and have seen great results. Generally it takes 15-20 units per side and lasts about as long as Botox injected for wrinkle reduction.