Daytime teeth grinding, known as awake bruxism, is a habit you can train yourself out of with the right techniques. Unlike nighttime grinding, which happens unconsciously during sleep, daytime clenching and grinding occurs during wakefulness, meaning you have direct access to interrupt and correct it. The challenge is that most people don’t realize they’re doing it until their jaw aches, their teeth hurt, or their dentist points out the wear. Up to 30% of the population grinds or clenches, and daytime clenching is driven primarily by stress, concentration, and ingrained muscle habits rather than the sleep-cycle disruptions behind nighttime grinding.
Why You Clench During the Day
Awake bruxism is defined as repetitive or sustained tooth clenching, grinding, or jaw bracing during wakefulness. It tends to spike during moments of concentration, frustration, or anxiety. You might notice it while staring at a screen, driving in traffic, or working through a stressful task. The jaw muscles tighten without any conscious decision on your part, and over time, this becomes an automatic pattern your brain defaults to whenever tension builds.
The causes are a mix of psychological, physiological, and lifestyle factors. Stress and anxiety are the strongest drivers. Certain medications can also trigger or worsen it: antidepressants, particularly paroxetine, venlafaxine, and duloxetine, are the most commonly linked. One study found the prevalence of bruxism was 24.3% among people taking antidepressants compared to 15.3% in a control group, with an incidence of new-onset bruxism at 14%. Nicotine use also increases the likelihood of bruxism, with research showing a statistically significant positive correlation. If you smoke or vape, that habit may be feeding your clenching habit.
Learn the Correct Resting Position
The foundation of stopping daytime clenching is retraining your default jaw position. Your teeth should not be touching when your mouth is closed. The ideal resting position follows a simple rule: lips together, teeth apart. Your jaw should hang slightly open inside your closed lips, with a small gap between your upper and lower teeth. At the same time, the tip of your tongue should rest gently against the roof of your mouth, just behind your front teeth. It should not press against your lower teeth or sit on the floor of your mouth.
This position keeps the jaw muscles in a relaxed state. Practice checking in with yourself throughout the day. Every time you notice your teeth are touching or your jaw feels tight, consciously return to this position: lips closed, teeth apart, tongue on the roof of your mouth. The goal is to make this your new default.
Use Awareness Cues to Catch Yourself
The biggest obstacle to stopping daytime clenching is that you don’t notice you’re doing it. Awareness cues solve this problem by creating regular interruptions that prompt you to check your jaw. This approach borrows from a behavioral psychology method called habit reversal training, which pairs a cue with a corrective response.
Set a recurring timer on your phone every 30 to 60 minutes. Each time it goes off, scan your jaw. Are your teeth touching? Is your jaw tight? If so, drop your jaw into the resting position, take a slow breath, and let the muscles soften. You can also place small visual reminders in your environment: a colored sticker on your computer monitor, a note on your steering wheel, or a rubber band on your wrist. Every time you see the cue, check your jaw.
Another simple technique involves a physical prompt. When you catch yourself clenching, open your mouth slightly and say “ahh” or just let your jaw drop open for a few seconds before resetting to the lips-together, teeth-apart position. This brief exaggerated opening helps release the tension pattern and signals your brain to relax the muscles.
Biofeedback Devices for Stubborn Clenching
If awareness cues alone aren’t enough, biofeedback technology offers a more precise approach. EMG biofeedback devices use small sensors placed on the jaw muscles to detect electrical activity. When your clenching exceeds a set threshold, the device sends an alert through sound, vibration, or a visual signal, giving you real-time feedback you can act on.
The research behind this approach is strong. A review of 13 studies found that 69% of patients using EMG biofeedback were symptom-free or significantly improved, compared to just 35% who improved with a placebo. A more recent analysis found significant reductions in both sustained clenching events and rhythmic grinding events during the day. One particularly striking study showed that just two days of daytime biofeedback training reduced nighttime grinding episodes by roughly 60% compared to a control group, suggesting that breaking the daytime habit carries over into sleep.
Wearable biofeedback devices designed for home use are available, though they vary in quality and cost. Some are headband-style sensors, others attach directly to the jaw area. They work best as a training tool over several weeks rather than a permanent fixture.
Jaw Exercises That Reduce Tension
Targeted exercises can help relax overworked jaw muscles and retrain the joint to move smoothly. These are especially useful if your clenching has already caused jaw pain, stiffness, or clicking.
The relaxed jaw exercise is the simplest starting point. Place your tongue on the roof of your mouth. Slowly open and close your jaw while keeping your teeth apart and the surrounding muscles as relaxed as possible. Repeat this 10 times, focusing on smooth, gentle movement.
The goldfish exercise targets partial opening. Place one finger on the joint in front of your ear (you’ll feel it move when you open your mouth) and another finger on your chin. Drop your lower jaw halfway open, then close. You should feel a gentle stretch without pain. For the full-opening version, follow the same finger placement but open your mouth as wide as you comfortably can while keeping your tongue on the roof of your mouth.
Chin tucks help release tension in the muscles connecting your jaw to your neck. Tuck your chin toward your chest while keeping your head and neck straight, hold for a few seconds, then release. Resisted opening is another useful exercise: place your fingers under your chin and gently try to open your mouth against that resistance, holding for a few seconds. This strengthens the muscles that oppose clenching and helps rebalance the jaw. Side-to-side and forward jaw movements, done slowly and gently with the mouth slightly open, also improve range of motion and reduce stiffness. Aim for a few minutes of these exercises two to three times a day.
Stress Management as Treatment
Because stress and anxiety are the primary drivers of daytime clenching, any strategy that ignores stress management is incomplete. The jaw is one of the first places the body stores tension. Many people who clench during the day are essentially carrying their emotional stress in their jaw muscles without realizing it.
What works varies by person, but the most effective approaches for bruxism-related tension include diaphragmatic breathing (slow, deep belly breaths that activate the body’s relaxation response), progressive muscle relaxation (deliberately tensing and then releasing muscle groups, including the jaw), and regular physical exercise. Even a short walk can reduce the background muscle tension that fuels clenching. Cognitive behavioral therapy has also been shown to help, particularly for people whose clenching is tied to anxiety or high-pressure work environments.
Signs Your Clenching Is Causing Damage
Daytime grinding leaves physical evidence. One common sign is a white horizontal line on the inside of your cheeks, called linea alba. It’s a thickened ridge running along the level where your upper and lower teeth meet, caused by the friction of clenching or cheek biting. It’s painless and doesn’t require treatment on its own, but it’s a reliable indicator that you’re clenching regularly.
Other signs include flattened or chipped tooth surfaces, tooth sensitivity (especially to cold), soreness in the jaw muscles when you wake up or at the end of the workday, headaches concentrated in the temples, and clicking or popping in the jaw joint. If you’re noticing these, the behavioral strategies above become more urgent, and it may be worth discussing your options with a dentist or physical therapist who specializes in jaw disorders.
When Behavioral Strategies Aren’t Enough
For persistent daytime clenching that doesn’t respond to self-directed techniques, injections of botulinum toxin into the masseter muscles (the large muscles on the sides of your jaw) can reduce clenching force. The typical treatment uses 60 to 100 units depending on muscle thickness, and the effects last around six months per session. This doesn’t eliminate the habit, but it weakens the muscle enough to reduce the damage and pain while you work on behavioral retraining.
If you take an antidepressant and noticed your clenching started or worsened after beginning the medication, that connection is worth raising with your prescriber. The incidence of medication-induced bruxism is high enough that adjusting the dose or switching to a different class of medication can sometimes resolve the problem. Paroxetine, venlafaxine, and duloxetine carry the strongest associations.
Daytime clenching is ultimately a habit, and habits respond to consistent correction. Most people see meaningful improvement within a few weeks of practicing the resting jaw position, using awareness cues, and managing their stress levels. The key is catching yourself early and often, then redirecting your jaw to where it belongs: lips together, teeth apart, tongue resting on the roof of your mouth.