Several approaches can reduce teeth grinding, from mouthguards and jaw exercises to stress management and treating underlying sleep problems. The right combination depends on whether you grind during the day, at night, or both, since these two forms have different triggers and respond to different strategies.
Daytime grinding tends to be driven by stress, anxiety, or deep concentration. You may catch yourself clenching during a tense meeting or while staring at a screen. Nighttime grinding, on the other hand, is linked to brief arousals during sleep and often happens without your awareness. Many people only discover it when a partner hears it or a dentist spots the wear on their teeth.
Mouthguards and Oral Appliances
A mouthguard is the most common first step for nighttime grinding. It won’t stop you from clenching, but it creates a barrier between your upper and lower teeth, preventing enamel damage, chips, and fractures. Custom-fitted guards made by a dentist offer better protection and comfort than store-bought options. Over-the-counter “boil and bite” guards are cheaper, but the Cleveland Clinic notes they’re less effective for both fit and long-term protection against grinding.
Custom guards are molded from an impression of your teeth, so they stay in place and distribute bite force more evenly. They typically cost more upfront but last longer and are less likely to shift during sleep. If cost is a barrier, a store-bought guard is still better than nothing while you explore other options.
Jaw Exercises and Physical Therapy
Targeted exercises can relieve the muscle tension that builds up from chronic grinding, especially soreness in the jaw, temples, and around the ear. A few well-studied routines are worth trying daily:
- Tongue-on-palate opening: Place the tip of your tongue on the roof of your mouth, just behind your front teeth. Gently open and close your jaw while keeping your tongue pressed to the palate. This limits how far the jaw opens and encourages the chewing muscles to relax rather than clench.
- Controlled stretching: With your teeth slightly apart, slowly open your mouth as wide as comfortable while looking upward with your eyes. Hold for a few seconds, then close. Next, shift your jaw to the left (eyes looking left, head still) and hold. Return to center and repeat on the right side.
- Resisted closing: Place your thumb under your chin and your index finger on the ridge between your chin and lower lip. Gently push inward as you close your mouth. This builds awareness of the muscles involved and trains them to engage at lower intensity.
- Chin tucks: Pull your chin straight back toward your neck, creating a “double chin,” then release. This targets the muscles connecting your jaw to your neck and upper back, which often tighten alongside the jaw itself.
Physical therapists who specialize in TMJ disorders can tailor these exercises and add manual techniques like massage or dry needling to the jaw muscles. Even a few sessions can teach you how to release tension on your own.
Biofeedback Training
Biofeedback uses sensors on the jaw muscles to alert you when you’re clenching, helping you learn to catch and release the habit. It’s particularly effective for daytime grinding. A systematic review in the International Journal of Environmental Research and Public Health found that auditory biofeedback (a small tone that plays when sensors detect clenching) significantly reduced both sustained clenching and rhythmic grinding episodes compared to no treatment. In one study, participants cut their clenching events roughly in half after just two days of training.
The benefits carried into nighttime grinding as well, with significant reductions in both types of grinding events during sleep. Some newer devices are wearable and can be used at home, though many biofeedback programs still run through a therapist’s office.
Stress and Anxiety Management
Since daytime bruxism is closely tied to emotions like anxiety, frustration, and tension, reducing your baseline stress level can directly lower how often you clench. Cognitive behavioral therapy helps you identify the thought patterns that trigger clenching and replace them with relaxation responses. Even simpler habits make a difference: progressive muscle relaxation before bed, regular exercise, and cutting back on stimulants like caffeine in the afternoon.
One practical technique is the “lips together, teeth apart” rule. Throughout the day, check in with your jaw. Your lips can rest closed, but your teeth should never be touching when you’re not eating. Setting a phone reminder every hour or two can help build this awareness until it becomes automatic.
Treating Sleep Problems
Roughly 30% of people with obstructive sleep apnea also grind their teeth at night. The connection appears to be the frequent brief awakenings that follow each paused breath. Your jaw muscles activate as part of the arousal response, leading to clenching or grinding. If you snore heavily, wake up feeling unrefreshed, or have been told you stop breathing in your sleep, treating the apnea (often with a CPAP device or oral appliance) may reduce or eliminate the grinding on its own.
Even without apnea, poor sleep quality worsens bruxism. Alcohol, screen time before bed, and irregular sleep schedules all increase the number of micro-arousals during the night, giving your jaw more opportunities to clench. Improving basic sleep hygiene is one of the simplest and most overlooked interventions for nighttime grinding.
Nutritional Factors
Deficiencies in vitamin D, magnesium, and omega-3 fatty acids have been linked to increased neuromuscular excitability and heightened stress sensitivity, both of which can contribute to grinding. A case-control study published in BMC Oral Health found that self-reported sleep bruxism was associated with vitamin D deficiency and low dietary calcium intake. Magnesium plays a direct role in muscle relaxation; when levels are low, muscles are more prone to sustained contraction.
This doesn’t mean supplements will cure bruxism on their own, but if your diet is low in leafy greens, nuts, fatty fish, or fortified dairy, correcting those gaps may reduce how intensely your muscles fire during clenching episodes. A simple blood test can check your vitamin D and magnesium levels.
Injections for Severe Cases
When grinding is severe enough to cause chronic pain, headaches, or visible jaw muscle enlargement, injections that relax the masseter muscles can provide significant relief. The treatment weakens the grinding force without affecting your ability to chew normally. A typical session involves 20 to 30 units per side, and the effects last about four to six months before the muscles gradually regain their full strength. Most people notice reduced clenching within one to two weeks.
This approach doesn’t address the underlying cause, so it’s generally used alongside other strategies rather than as a standalone fix. It’s most useful for people whose grinding has led to jaw pain, tooth damage, or tension headaches that haven’t responded to guards and exercises alone.
Combining Approaches for Best Results
Teeth grinding rarely has a single cause, which is why the most effective strategy usually layers several interventions. A mouthguard protects your teeth while you work on the root issues. Jaw exercises and stress management reduce muscle tension and clenching frequency. Addressing sleep quality or nutritional gaps removes background contributors. The goal isn’t to find one magic fix but to chip away at the problem from multiple angles until the grinding becomes manageable or stops entirely.