If this happens, the disc can get bunched between the jawbones when opening and closing your mouth. This disc prevents your two jaw bones from grinding on each other. What causes the joints in your jaw to vibrate?Ī small cartilage disc sits in the joint of your upper and lower jawbone that is supposed to be attached to your lower jawbone and slide along with it as you open and close your mouth. This device can detect if there is any vibration when you open and close your mouth and how severe it is. ![]() The TMJ is the joint of your jaw on the left and right side, and it’s used to open and close your mouth.Ī JVA is done by placing a device that looks like small headphones on your left and right joints, right next to your ears. ![]() ![]() Joint Vibration Analysis, or JVA, is a test done by your dentist to detect vibrations in your temporomandibular joint (TMJ). What is a Joint Vibration Analysis (JVA)?
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