Waking up with a sore jaw, headaches, or sensitive teeth? You might be grinding or clenching your teeth at night—and you may not even realize it. For many people, these symptoms are the result of bruxism, a condition where you involuntarily grind, gnash, or clench your teeth, especially during sleep. One of the most effective and non-invasive ways to protect your teeth and relieve these symptoms is by using a night guard. But what exactly is a night guard, and why might you need one?
What Is a Night Guard?
A night guard—also called an occlusal guard, bite splint, or dental guard—is a custom-fitted dental appliance that you wear over your teeth while you sleep. It acts as a barrier between your upper and lower teeth, absorbing the pressure and friction caused by grinding or clenching. Night guards are typically made from durable acrylic or soft plastic, and they are designed specifically for your mouth to ensure a comfortable, secure fit. Some people might try over-the-counter options, but custom night guards from a dentist offer far better protection, comfort, and longevity.
Why Might You Need a Night Guard?
There are several reasons your dentist may recommend a night guard. Here are the most common ones:
1. To Prevent Damage from Teeth Grinding (Bruxism)
Bruxism affects millions of people—many of whom are unaware they have it. The pressure from grinding can be up to 250 pounds of force, enough to wear down enamel, crack teeth, or even damage dental restorations like crowns or fillings. A night guard cushions your teeth and minimizes this damage, helping to protect your smile for the long term.
2. To Reduce Jaw Pain and Tension
Chronic clenching and grinding often lead to temporomandibular joint (TMJ) disorders. These disorders cause jaw pain, tightness, and clicking or popping sounds when opening and closing your mouth. Wearing a night guard helps reduce strain on the jaw muscles and joints by keeping your bite in a more relaxed position during sleep.
3. To Prevent Morning Headaches and Facial Pain
Do you often wake up with a dull headache or facial soreness? That might be because the muscles in your face and head are overworked during the night from clenching. A night guard can help distribute the pressure more evenly and reduce the frequency and severity of these headaches.
4. To Protect Dental Work
If you’ve had dental crowns, veneers, bridges, or implants, grinding can shorten their lifespan. Night guards act as a layer of protection between your teeth and these restorations, helping to avoid costly repairs or replacements.
5. To Improve Sleep Quality
Chronic jaw tension and tooth sensitivity can disturb your sleep, even if you’re not aware of it. By relieving the pressure and discomfort associated with bruxism, a night guard can help you sleep more comfortably—and wake up feeling more rested.
Signs You Might Need One
Not sure if you grind your teeth at night? Since bruxism often happens subconsciously, especially during sleep, the signs might be subtle. Here are some red flags to look out for: worn, flattened, or chipped teeth; increased tooth sensitivity; jaw soreness or stiffness in the morning; frequent headaches or earaches; clicking or popping in the jaw; cracked dental work; and sleep disturbances or a partner hearing grinding sounds at night. If you’re experiencing any of these symptoms, it’s a good idea to mention them at your next dental visit. Your dentist can assess your bite, check for signs of wear, and determine whether a night guard is appropriate for you.
Custom vs. Over-the-Counter Night Guards
There are many night guards available at drugstores, but they aren’t one-size-fits-all—literally. Over-the-counter guards are bulkier and less precise, which can make them uncomfortable or even ineffective. They may shift around during sleep or cause additional issues if they don’t align well with your bite. Custom night guards, on the other hand, are made using a mold of your teeth. They’re more comfortable, fit securely, and provide better protection because they’re designed just for you.
Caring for Your Night Guard
Like any dental appliance, your night guard needs proper care to stay clean and effective. Rinse it with cool water after each use. Clean it with a toothbrush and mild soap (avoid hot water). Store it in a ventilated case when not in use. Avoid exposing it to heat or direct sunlight. Bring it to your dental appointments for regular checks. With proper care, a custom night guard can last several years.
Final Thoughts
If you’re grinding or clenching your teeth at night—even if you’re not aware of it—you could be doing serious damage to your teeth and jaw over time. A night guard is a simple, non-invasive solution that can relieve discomfort, prevent further damage, and even help you sleep better. Protecting your smile while you sleep is one of the smartest moves you can make for your long-term oral health. Talk to your dentist if you suspect you might benefit from a night guard—they can help you find the best option tailored to your needs.