When I move my jaw up and down (in a biting motion) even slightly (keeping my lips together), it makes an odd sound. It s definantly not a popping, it s like the sound that rubbing wet rubber would make. It s not causing any discomfort at the moment, but I have a history of unexplained jaw lockings. At one point when I was 13, my jaw locked so I could only open it to about two-three inches for eight months, and when I was 14 I had unexplained jaw pains on the right side. Now, I m hearing this odd creaking sort of sound on the right side. What might it be?