Your jaw does a lot of work throughout the day. From talking and laughing to chewing your favorite foods, you probably don’t think much about your jaw until something feels wrong. If your jaw suddenly becomes stiff, painful, or difficult to open and close, it can be uncomfortable—and sometimes alarming.
A locked or stiff jaw can have several possible causes. Understanding why it happens can help you decide what to do next.
Why Does My Jaw Feel Stiff?
Jaw stiffness can happen for a variety of reasons. One common cause is temporomandibular joint (TMJ) dysfunction, which affects the joints and muscles responsible for jaw movement. TMJ problems may cause stiffness, soreness, clicking or popping, headaches, and difficulty opening your mouth.
Muscle tension can also contribute to jaw stiffness. Stress and anxiety may cause you to unconsciously clench your teeth or tighten your jaw muscles, especially while sleeping. Over time, this can leave your jaw feeling tired, sore, or tight.
Other possible causes include teeth grinding, inflammation, an injury to the jaw, arthritis, dental infections, and certain oral health conditions.
What Does It Mean If My Jaw Is Locked?
A locked jaw generally means you’re having trouble moving your jaw normally. It may become difficult to open your mouth fully, or you may find that your jaw gets stuck while opening or closing.
Sometimes, jaw locking is related to an issue with the TMJ’s movement. The joint contains a small disc that helps the jaw move smoothly. If the disc shifts out of its normal position, it can interfere with normal jaw movement and potentially cause the jaw to catch or lock.
A jaw that is suddenly and completely locked should be taken seriously, particularly if you cannot open or close your mouth at all.
Can I Treat Jaw Stiffness at Home?
If your symptoms are mild, a few simple measures may help ease discomfort. Applying a warm compress to the jaw can help relax tense muscles, while gentle massage may also provide relief.
You can also give your jaw a break by choosing softer foods temporarily and avoiding chewy or crunchy foods, gum, and very large bites. Try to avoid intentionally stretching or forcing your jaw open, as this could potentially make the problem worse.
If you notice yourself clenching your teeth, consciously relaxing your jaw throughout the day may also help. Your teeth should generally remain slightly apart when you aren’t eating or swallowing.
When Should I See a Dentist or Doctor?
Persistent or recurring jaw stiffness deserves professional attention, particularly if it interferes with eating, speaking, sleeping, or daily activities. You should also seek care if your jaw pain is worsening, your jaw repeatedly locks, or you have difficulty opening your mouth normally.
A locked jaw accompanied by significant swelling, fever, difficulty breathing or swallowing, or severe pain may require prompt medical attention. These symptoms can sometimes indicate an infection or another condition that needs urgent treatment.
A dentist or other qualified healthcare professional can evaluate your symptoms, determine the underlying cause, and recommend appropriate treatment. Depending on the problem, treatment may include conservative measures, exercises, a nightguard, medication, or TMJ therapy.
Don’t Ignore Ongoing Jaw Problems
An occasional tight jaw may resolve with some rest, but recurring stiffness or locking is worth discussing with a professional. Getting to the root of the problem can help you protect your comfort, oral health, and ability to move your jaw normally.
When your jaw keeps telling you something is wrong, it’s worth listening.
About the Practice
Dr. Mauck and Dr. Ricci provide dental care with a focus on helping patients maintain comfortable, healthy smiles. The practice offers TMJ therapy to help patients experiencing jaw discomfort and other symptoms associated with problems affecting the jaw joints and muscles. If your jaw is hurting, come see us!
Call us at (303) 745-1400 or schedule your appointment online.