The temporomandibular joint (TMJ) is the hinge-like bone that connects your jaw and your skull. You can feel it moving by pressing your index fingers to your cheeks and opening and closing your mouth.

TMJ pain may go away on its own. But specific exercises and other doctor-recommended practices, such as wearing a mouth guard, may help fix the issue sooner. You may not think about your ...

A tight jaw can happen for many reasons, such as stress, temporomandibular joint disorders, grinding the teeth at night, and tetanus, among others. Share on Pinterest Nes/Getty Images Jaw tightness ...