Jaw tension usually comes from clenching or grinding you may not even realize you’re doing. The fastest way to relax your jaw is to place the tip of your tongue on the roof of your mouth, let your teeth separate slightly, and let your lips barely touch. This simple resting position physically prevents your upper and lower teeth from pressing together, which is the main driver of muscle tightness. But if your jaw stays tight despite conscious effort, there are deeper strategies worth knowing.
The Resting Position Your Jaw Should Be In
Most people assume their teeth should touch when their mouth is closed. They shouldn’t. The natural resting position of a relaxed jaw has a small gap between the upper and lower teeth at all times.
A technique taught at the USC Orofacial Pain and Oral Medicine Center makes this easy to find. Say the letter “N” and freeze. Your tongue tip is now pressing lightly against the roof of your mouth, just behind your front teeth. Your teeth are slightly apart, and your lips are barely touching. This is the position your jaw should be in whenever you’re not eating or talking. Keep it as much as possible during the day, especially when you’re concentrating at a screen, driving, or exercising. These are the moments most people unknowingly clench.
Self-Massage for Tight Jaw Muscles
The large chewing muscles on each side of your face, running from your cheekbones to the corners of your jaw, are usually where the tension lives. You can work on them yourself in about two minutes.
Place two to three fingers on the muscles just below your cheekbones. Press firmly into the tissue and hold that pressure for 6 to 10 seconds. Keep your jaw relaxed while you hold. Then move your fingers to a different spot on the same muscle and repeat. Try to find at least four to five different points along the muscle, working from just below the cheekbone down toward the jaw angle. You’ll likely find some spots that are noticeably more tender. Spend a little extra time on those. Do this once or twice a day, or whenever you notice tension building.
Heat, Cold, and When to Use Each
For mild to moderate tightness or achiness, moist heat works best. A warm, damp towel held against the side of your face for 10 to 20 minutes helps loosen the muscles and increase blood flow. You can microwave a damp washcloth for 15 to 20 seconds as a quick option.
For sharper or more intense pain, a cold pack or gel pack applied for 10 to 20 minutes can reduce inflammation and numb the area. You can alternate between the two if your jaw feels both tight and sore. Repeat either approach as needed throughout the day.
Progressive Muscle Relaxation for the Jaw
If your jaw tension is tied to stress (and it usually is), progressive muscle relaxation trains your body to recognize the difference between a clenched jaw and a relaxed one. The technique is simple: you deliberately tighten the muscles, hold, then release.
Squeeze your eyes shut, clench your jaw hard, and wrinkle your forehead and nose all at once. Feel the pulling across your forehead, the tightness around your cheeks and eyes, and the tension in your jaw. Hold that for about five seconds while taking a deep breath into your belly. Then slowly exhale and let your entire face go slack. Let your forehead smooth out, your cheeks soften, your lips part slightly, and your jaw hang completely loose. The contrast between the tension and the release teaches your nervous system what “relaxed” actually feels like. Repeat two or three times. Doing this before bed is especially useful if you tend to clench in your sleep.
How Your Posture Affects Your Jaw
There’s a direct mechanical link between the position of your head and the tension in your jaw. When your head drifts forward, as it does during hours of looking at a computer or phone, the muscles in the front of your neck tighten and shorten. This pulls on the small bone in your throat (the hyoid), which in turn tugs the lower jaw backward and downward. The jaw joint gets compressed in an unnatural position, and the muscles around it have to work overtime to compensate.
Over time, this habitual forward head posture can stretch the ligaments that stabilize the jaw joint, contributing to clicking, popping, and chronic tightness. If you spend most of your day at a desk, stacking your ears over your shoulders and keeping your screen at eye level can take a surprising amount of strain off your jaw.
Night Guards and Bite Splints
If you grind your teeth at night, no amount of daytime relaxation fully solves the problem. A dental device worn during sleep can protect your teeth and reduce the strain on your jaw muscles, but the type matters.
Over-the-counter boil-and-bite guards are inexpensive and offer some protection by creating a barrier between your upper and lower teeth. You can still clench and grind while wearing one, but your teeth grind against the softer guard material instead of each other. Stock, pre-formed guards are the cheapest option but tend to be bulky and poorly fitting. A poor fit can sometimes make jaw problems worse rather than better.
Custom-fitted guards made from dental impressions are more precise and comfortable. A step beyond that is a bite splint: a rigid acrylic device custom-made by a dentist, designed not just to protect your teeth but to reposition your jaw into a more relaxed alignment. Bite splints take pressure off the jaw joints and the surrounding muscles, which makes them the better choice for people whose main issue is jaw pain or joint dysfunction rather than just tooth wear.
When Jaw Tension Needs Professional Attention
Occasional tightness after a stressful day is normal. But if your jaw clicks or pops when you open it, if opening your mouth fully has become difficult, or if you have pain that keeps returning despite self-care, these are signs worth getting evaluated. A dentist or doctor will typically listen to your jaw while you open and close, check your range of motion, and press around the joint to locate pain points. If initial treatments like a night guard or physical therapy don’t provide enough relief, you may be referred to a specialist in jaw disorders.
For persistent clenching that doesn’t respond to other approaches, targeted injections into the jaw muscles can temporarily weaken them enough to break the clenching cycle. A typical starting dose is about 15 units per side. Results appear within a few weeks and last roughly 2 to 4 months, which can give the muscles time to “unlearn” the habit of constant tension.