Daytime teeth grinding and clenching is a habit you can break, but it takes a deliberate combination of awareness-building, muscle retraining, and addressing the underlying triggers. Unlike nighttime grinding, which happens unconsciously during sleep, daytime bruxism occurs while you’re awake, which means you have the ability to catch it and intervene. Up to 30% of the population grinds or clenches their teeth, and for many people, the daytime version is driven by stress, anxiety, or sheer habit they’ve never noticed.
The good news: because you’re conscious when it happens, daytime bruxism responds well to behavioral strategies. Here’s how to tackle it.
Why You’re Clenching Without Realizing It
Most people who grind or clench during the day don’t know they’re doing it. Your jaw muscles, particularly the masseter (the large muscle running from your cheekbone to your jawline), can hold low-level tension for hours without registering as pain. Researchers describe this as “bracing,” where your jaw muscles stay partially contracted at a level similar to what they’d produce during speech, even though you’re silent. Full clenching generates much stronger contractions, but bracing flies under the radar because it doesn’t feel like you’re doing anything unusual.
The primary driver is psychological. Studies consistently link daytime bruxism to higher levels of both ongoing (trait) anxiety and situational (state) anxiety, along with a tendency toward emotional instability and excessive worry over everyday situations. People with daytime bruxism also show more physical symptoms of stress, like tension headaches and tight shoulders. Many patients report that their jaw tightening isn’t constant but spikes during stressful moments: a difficult email, a tense conversation, a looming deadline. Some researchers believe the clenching may actually function as a stress-release mechanism, which is part of why it becomes so habitual.
Check Whether Medications Are Contributing
If you take an antidepressant, it’s worth knowing that several common ones can trigger or worsen teeth grinding. Medications that increase serotonin activity are particularly associated with bruxism. This includes SSRIs like fluoxetine, paroxetine, escitalopram, and citalopram, as well as SNRIs like venlafaxine and duloxetine. Stimulant medications, certain anti-seizure drugs, and nicotine can also contribute.
If your clenching started or worsened after beginning a new medication, bring it up with your prescriber. Dose adjustments or adding a secondary medication to counteract the side effect are both options that have worked for many patients.
Build Awareness With Reminders and Check-Ins
The single most important step is catching yourself in the act. Research using portable biofeedback devices found that patients were “startled to discover how frequently they engaged in clenching or grinding.” That moment of recognition is powerful. In studies where patients wore a small device that buzzed whenever their jaw muscles tensed, daytime bruxism dropped significantly within days, and many reported lasting improvement even after the training period ended.
You don’t need a clinical device to replicate this principle. Set timed reminders on your phone every 30 to 60 minutes throughout your workday. When the reminder goes off, do a quick scan: Are your teeth touching? Is your jaw tight? Are your shoulders raised? You can also place small visual cues in your environment, like a colored sticker on your computer monitor or steering wheel, that prompt you to check your jaw position each time you notice them.
The goal is to move from unconscious clenching to conscious recognition. Once you can reliably notice when you’re doing it, you can intervene before the tension builds into soreness or headaches.
Learn the Correct Resting Position for Your Jaw
Your teeth should not be touching when your mouth is closed. This surprises many people, but the natural resting position of a relaxed jaw has a small gap between the upper and lower teeth, with the lips gently closed and the tongue resting lightly on the roof of the mouth just behind the front teeth.
This tongue position is the foundation of several clinical jaw relaxation programs. Place the tip of your tongue on the palate, right behind your upper front teeth, and let your jaw hang slightly open. It’s physically difficult to clench while holding this position, which makes it an effective default to return to every time you catch yourself grinding. Dentists and physical therapists sometimes call this “lips together, teeth apart.” Practice it deliberately throughout the day until it starts to feel natural.
Exercises That Release Jaw Tension
When you’ve been clenching for hours, your jaw muscles are shortened and fatigued. These exercises help release that tension and retrain the muscles toward a more relaxed baseline.
- Resisted opening: Place your thumb under your chin and push gently upward. Slowly open your mouth against that resistance, hold for a few seconds, then close slowly. This strengthens the muscles that oppose clenching while encouraging the clenching muscles to relax.
- Resisted closing: Keep your thumb under your chin and place your index finger on the ridge between your chin and lower lip. Push gently as you close your mouth. This builds control over the closing motion rather than letting it happen reflexively.
- Tongue-up wiggle: Press your tongue to the roof of your mouth, then slowly move your jaw side to side. This mobilizes the joint while reinforcing the relaxed tongue position.
- Controlled opening stretch: Open your mouth as wide as comfortable, hold for five seconds, then close. Repeat six times. This stretches the masseter and helps reset its resting length.
Aim to do these two or three times daily, especially during breaks at work and before bed. They take about two minutes total.
Address the Stress Behind the Habit
Because daytime bruxism is so tightly linked to anxiety and stress reactivity, treating the clenching without addressing the underlying tension is like mopping a floor while the faucet’s still running. You don’t need to overhaul your life, but building in even small stress-management practices can reduce how often your jaw tightens in the first place.
What works varies by person, but strategies with good evidence behind them include regular aerobic exercise, progressive muscle relaxation (where you systematically tense and release muscle groups from your feet to your face), and mindfulness-based breathing. Progressive muscle relaxation is especially relevant because it trains you to notice the difference between a tense muscle and a relaxed one, a skill that transfers directly to catching jaw clenching throughout the day. Even five minutes of slow diaphragmatic breathing during a stressful workday can measurably lower the kind of situational anxiety that triggers clenching episodes.
When Behavioral Strategies Aren’t Enough
If you’ve consistently practiced awareness techniques and jaw relaxation for several weeks and your clenching is still causing pain, tooth damage, or headaches, there are clinical options worth exploring.
Botox injections into the masseter muscle are increasingly used for bruxism. In clinical trials, patients received 30 units per side in the masseter, sometimes with additional injections in the temporalis muscle at the temple. The treatment works by partially weakening the muscle so it can’t generate the same clenching force. The effect peaks around four weeks after injection but typically wears off by three to four months, meaning repeat treatments are necessary. It’s most useful for people whose clenching causes significant jaw pain or has already led to muscle enlargement along the jawline.
A daytime dental splint or thin occlusal guard can serve as a physical reminder not to clench. Some people find that simply having something between their teeth disrupts the habit loop. These are different from bulky nighttime mouth guards and are designed to be worn discreetly during the day.
Cognitive behavioral therapy focused on habit reversal is another option with solid evidence. A therapist helps you identify your specific clenching triggers, build a competing response (like the tongue-on-palate position), and practice it until the new behavior replaces the old one. For people whose bruxism is heavily tied to anxiety or perfectionism, this approach tackles both the habit and its root cause simultaneously.