Jaw tightness and pain, also known as temporomandibular joint (TMJ) tightness, can be caused by various factors. Stress or anxiety can lead to muscle tension in the jaw, resulting in tightness and discomfort. TMJ disorders, teeth grinding (bruxism), tetanus infection, rheumatoid arthritis (RA), and osteoarthritis (OA) are other potential causes. To relieve a tight jaw, patients can try jaw joint stretches, opt for a soft food diet, and use mouthguards to prevent teeth grinding. Treatment options may include shortwave diathermy, hot and cold compresses, medication, or even acupuncture. It’s important for patients to consult a doctor or dentist if symptoms worsen or interfere with daily activities. By addressing the underlying cause and providing appropriate remedies, dental professionals can help patients find relief from jaw tightness and pain.