Bruxism, the habit of grinding or clenching your teeth, affects roughly one in five adults during sleep and nearly one in four during waking hours. There’s no single cure, but a combination of approaches can dramatically reduce how often it happens and protect your teeth from damage. The right fix depends on whether you grind at night, clench during the day, or both, and what’s driving the habit in the first place.
Figure Out What Type You Have
Sleep bruxism and awake bruxism are considered separate conditions with different triggers. Sleep bruxism involves rhythmic, side-to-side grinding tied to brief arousals during sleep. You might not know you’re doing it until a partner hears the noise or a dentist spots wear on your teeth. Awake bruxism is mostly clenching (pressing the teeth together without the grinding motion) and is strongly linked to stress, concentration, or habit.
The distinction matters because treatments differ. A mouth guard protects teeth at night but does nothing for daytime clenching. Stress management helps daytime bruxism but may not stop grinding that happens during sleep arousals. Many people have both types, which means layering multiple strategies.
Check for Hidden Triggers
Certain medications are well-documented bruxism triggers. Antidepressants in the SSRI and SNRI classes, including sertraline, fluoxetine, escitalopram, venlafaxine, and duloxetine, have all been linked to new or worsened grinding. In reported cases, about 76% of patients were being treated for major depression, generalized anxiety, or both. If your bruxism started or worsened after beginning one of these medications, that connection is worth raising with your prescriber. Switching to a different class of antidepressant or adjusting the dose often resolves it.
Sleep apnea is another common culprit. The micro-arousals caused by interrupted breathing can trigger grinding episodes. Treating the apnea (typically with a CPAP device or oral appliance) often reduces bruxism as a side effect. Acid reflux, heavy alcohol use, and high caffeine intake are also associated with more frequent grinding at night.
Retrain Your Jaw During the Day
One of the most effective and overlooked fixes for bruxism is learning a new resting position for your jaw. The goal is simple: lips together, teeth apart, tongue resting gently on the roof of your mouth just behind your front teeth. This position keeps the jaw muscles relaxed and breaks the habit of holding tension. Practice it deliberately throughout the day, especially during activities where you tend to clench, like working at a computer, driving, or exercising.
A set of exercises called the Rocabado 6×6 routine is commonly used in physical therapy for jaw problems. The core movements include:
- Controlled jaw opening: Press your tongue lightly against the roof of your mouth, then open and close your jaw slowly. The tongue pressure prevents you from opening too wide and keeps the joint tracking correctly.
- Resisted opening: Place two fingers on your chin, press your tongue to the palate, and open and close against the gentle resistance of your fingers.
- Lateral stretches: With your tongue on the palate, move your jaw slowly from side to side.
- Gentle maximum opening: Relax your jaw, keep your teeth slightly apart, and slowly open as wide as comfortable while looking upward with your eyes.
These exercises work best when done six times per day, six repetitions each. They reduce muscle tension, improve joint mobility, and help you become more aware of unconscious clenching patterns. Most people notice improvement within two to three weeks of consistent practice.
Mouth Guards and Splints
Occlusal splints are the most commonly prescribed treatment for sleep bruxism, but the evidence behind them is more nuanced than most people realize. A Cochrane review found no significant difference in grinding episodes, sleep quality, or sleep efficiency between hard stabilization splints and simple palatal splints that don’t change how your teeth meet. In other words, the protective barrier matters, but the specific design may not reduce grinding itself.
That said, splints clearly protect teeth from damage, and that alone makes them worthwhile if you’re a nighttime grinder. The forces involved in bruxism can reach over 1,000 newtons, roughly double what a healthy jaw produces during a normal maximum bite. Over time, that kind of force cracks teeth, wears down enamel, and damages dental work.
Hard acrylic splints are generally preferred over soft rubber guards for long-term use. Soft splints degrade quickly and may actually increase muscle activity in up to 50% of users, compared to about 20% with hard splints. A custom-fitted hard splint from a dentist costs more than a drugstore boil-and-bite guard, but it lasts longer and is less likely to make clenching worse.
Biofeedback Devices
Biofeedback takes a different approach: instead of just protecting your teeth, it trains your brain to stop grinding. Wearable devices detect jaw muscle activity during sleep and deliver a gentle vibration when clenching exceeds a certain threshold. The vibration isn’t meant to wake you fully. It triggers just enough awareness for your nervous system to relax the muscles.
A pilot study comparing biofeedback to a standard occlusal splint found striking results. After 12 weeks, biofeedback users averaged about 3.3 grinding episodes per eight hours of sleep, while splint users averaged 11.4. The duration of each episode also dropped, from typical pre-treatment levels down to about 9 seconds per event in the biofeedback group versus 14 seconds in the splint group. The concept behind biofeedback is that grinding is a learned behavior that can be unlearned when you’re made aware of it, even during sleep.
These devices are still relatively niche and can be expensive, but they represent one of the few approaches that may actually reduce grinding frequency rather than just managing the consequences.
Botox for Severe Cases
When other approaches haven’t worked, injections of botulinum toxin into the jaw muscles can provide significant relief. The treatment weakens the masseter (the main chewing muscle) enough to reduce grinding force without affecting normal eating or speaking. A typical treatment involves 25 to 30 units per side in the masseter and 15 to 20 units per side in the temporal muscle above the ear.
Relief generally lasts three to six months before the muscles regain full strength and the treatment needs repeating. Muscle mass in the jaw begins decreasing within about three weeks of injection and stays reduced for up to six months. For people with visible jaw enlargement from years of heavy grinding, this also slims the jawline as a cosmetic side effect. Botox for bruxism is typically not covered by insurance and runs several hundred dollars per session, so it’s usually reserved for cases where grinding is causing significant pain or dental damage that other treatments haven’t controlled.
Address Stress and Nutrient Gaps
Stress is the single most consistent risk factor for awake bruxism, and it plays a role in sleep bruxism as well. Any stress reduction technique that actually works for you, whether that’s exercise, meditation, therapy, or simply cutting back on overcommitment, can reduce clenching. The connection isn’t vague: stress hormones directly increase muscle tension in the jaw.
Magnesium deficiency deserves specific attention. Low magnesium causes neuromuscular irritability, meaning your muscles are quicker to tense and slower to relax. It also contributes to anxiety, insomnia, and headaches, all of which overlap with bruxism symptoms. Magnesium helps regulate the body’s stress response by calming activity in the hypothalamus, the brain region that controls the fight-or-flight system. Combined supplementation of magnesium and vitamin B6 has been shown to improve neural excitability and anxiety symptoms that feed into grinding patterns. Many adults don’t get enough magnesium from diet alone, and supplementation is inexpensive with a low risk of side effects at moderate doses.
Limiting alcohol and caffeine, particularly in the evening, also reduces nighttime grinding. Both substances disrupt sleep architecture in ways that increase the brief arousals during which grinding episodes occur.
Combining Approaches for Best Results
Most people who successfully manage bruxism use a combination of strategies rather than relying on any single fix. A practical starting plan might look like this: wear a hard splint at night to protect your teeth, practice the resting tongue position and jaw exercises during the day to retrain your muscles, address any medication triggers or sleep disorders, and add magnesium supplementation if your intake is low. If stress is a major factor, make that a priority rather than treating it as optional.
Bruxism tends to wax and wane with life circumstances. You may grind heavily during a stressful period and barely at all during calmer stretches. The goal isn’t necessarily to eliminate every episode forever, but to reduce grinding enough that it stops damaging your teeth, causing headaches, and disrupting your sleep.