The JVA is a screening tool for TMJ Dysfunction. The Joint Vibration Analysis is an instrument resembling a set of headphones, but instead of listening to music, it listens to the jaw joints. A healthy jaw joint creates very little friction, whereas a damaged joint is noisier.
Depending on the type of vibration created, a joint may be considered stable or continuing to breakdown. In the case of a degenerative joint, the way the bite comes together can influence the future health of the joint.