What to Do If Your Jaw Locks: First Aid & Prevention

Jaw locking occurs when the lower jaw becomes temporarily stuck, preventing the mouth from fully opening or closing. This can cause discomfort and limit essential functions like speaking and eating. While alarming, it is often a temporary issue manageable with appropriate care. An estimated 5-12% of people experience jaw locking at some point in their lives.

Immediate Steps for a Locked Jaw

When experiencing a locked jaw, relax the jaw muscles, as tension can worsen the situation. Deep breathing exercises can help promote overall relaxation, aiding in easing jaw muscle tightness. Gently massaging the muscles around the jaw can help relieve spasms. Apply warm compresses to the affected area for 15-20 minutes to further relax the muscles and increase blood circulation.

After applying warmth and gentle massage, carefully attempt controlled jaw movements. Slowly open and close your mouth, or try moving your jaw gently from side to side, without forcing any motion. These gentle exercises aim to improve flexibility and decrease discomfort. Over-the-counter pain relievers, like ibuprofen, can be used for significant pain. Avoid aggressive actions like forcing the jaw open or attempting to crack it, as this could lead to further injury.

Common Causes of Jaw Locking

Jaw locking frequently stems from issues with the temporomandibular joint (TMJ). Problems like disc displacement within the TMJ, where the cushioning disc moves out of its normal position, can lead to the jaw getting stuck in either an open or closed position. Inflammation in the joint area, sometimes caused by trauma, can also restrict jaw movement.

Muscle spasms are another common reason for a locked jaw. Habits such as teeth clenching or grinding, known as bruxism, can strain the jaw muscles, leading to spasms and tightness. Stress and anxiety often contribute to unconscious jaw clenching, increasing pressure on the TMJ. Additionally, overextending the jaw during activities like a wide yawn or taking a large bite can cause a temporary lock. Prolonged jaw opening during dental procedures may also trigger a locked jaw.

When to Seek Professional Help

While many cases of jaw locking resolve with home remedies, professional medical or dental intervention may be necessary. If your jaw remains locked despite attempting immediate self-care steps, or if locking episodes occur frequently, seek a professional evaluation. Severe or debilitating pain that significantly impacts your ability to eat, speak, or swallow warrants prompt medical attention.

Other concerning symptoms requiring professional help include swelling, fever, or difficulty breathing, as these could signal a more serious underlying issue. A dentist, oral surgeon, or a TMJ specialist can diagnose the cause of jaw locking and recommend appropriate treatment. These professionals can offer tailored solutions beyond initial home care.

Preventing Future Jaw Locking

Proactive strategies can reduce future jaw locking episodes. Managing stress and tension is important; stress can lead to jaw clenching and muscle tightness. Techniques such as deep breathing, meditation, and yoga can reduce stress levels. Becoming aware of and breaking habits like chronic jaw clenching, teeth grinding, or excessive gum chewing can also prevent strain on the jaw.

Regularly performing gentle jaw exercises maintain jaw flexibility and strengthen the surrounding muscles. These can include controlled opening and closing movements or gentle side-to-side stretches. Maintaining good posture, especially when sitting for long periods, reduces strain on the neck and jaw muscles. During periods of jaw discomfort, opting for softer foods rests the jaw muscles. For individuals who grind their teeth at night, a custom-fitted night guard or splint can protect the teeth and jaw from excessive force.