Do you have frequent headaches or migraines, earaches or tinnitus, tender jaw muscles, or a dull aching facial pain? Do you often have neck and shoulder pain? Does your jaw lock or stray to one side when you open your mouth? These aches and pains may be related to the jaw joint, called the temporomandibular joint or “TMJ,” and the muscles that work to move the joint. These painful conditions are often called “TMD” for temporomandibular disorders.