What it is
A night guard (also called an occlusal guard or bite guard) is a smooth, firm or slightly flexible piece of plastic that fits over the upper or lower teeth. It creates a barrier between the teeth so they don't rub directly against each other while you sleep.
Grinding and clenching during sleep is often called bruxism. Many people don't know they do it until a partner hears it, or a dentist notices wear on the teeth, or they wake up with a sore jaw or a tired feeling in the face.
Night guards come in a few forms: ones made by a dentist from a mold or digital scan of your teeth, boil-and-bite versions sold in stores, and others sold online. They differ in fit, thickness and materials. A night guard doesn't necessarily stop the grinding itself. It's generally meant to help protect teeth and may ease strain on the jaw.
How it’s traditionally been approached
Dentists have long used custom-fitted guards as a common way to protect teeth from wear in people who grind or clench. The dentist typically examines the teeth, gums and jaw, then takes an impression or digital scan so the guard can be made to fit.
Store-bought and online options have become popular because they are easy to get. Some people use them as a starting point, while others find a custom fit more comfortable. A dental exam first is wise, since a dentist can check that nothing else is going on and that the guard suits your bite.
Grinding is often looked at alongside other factors, such as stress, sleep quality, bite alignment and jaw joint comfort. Depending on the situation, a dentist may talk about a guard on its own or as one part of a broader conversation, and may refer you to a specialist if something needs a closer look.
How the right dentist may help
The right dentist may help by looking closely at your teeth, gums and jaw, asking about your symptoms, and talking through whether a night guard makes sense for you. A visit is usually relaxed and conversational. If you feel nervous, you can say so, and a good team will go at your pace.
If a guard is a good fit for you, the dentist may take a mold or scan, then have you come back to try it on. They typically check that it feels comfortable and that your bite feels natural. Costs vary by practice, location and case, so it's fair to ask for a written treatment plan and estimate.
Good questions to ask include: Do you see signs of grinding or clenching? What type of guard do you suggest and why? How should I clean and store it? How will we know if it's working for me? Should my jaw, gums or sleep be looked at too? If you snore or feel very tired, mention it, since sleep apnea is diagnosed by a physician and dentists provide oral appliances only as part of that care.
The whole-person view
Body, mind and stress are closely connected. Jaw tension, sleep and daily stress can influence one another, so many people find it helpful to look at the whole picture rather than just the teeth. Gentle habits like winding down before bed may also be part of that conversation.
If stress feels like part of the story, body-based support such as Somatic Experiences may be one avenue to explore, and talk therapy through Therapists.plus is another. These are simply options for people who are curious, and they work alongside, not instead of, dental care.
Somatic Experiences: nervous system regulation →Therapists.plus: sleep focus and habits →
Keep in mind
- This page is educational only and is not dental or medical advice. Only a licensed dentist can examine you and decide what is appropriate.
- Jaw pain, headaches or worn teeth can have several causes, so an exam is the best first step rather than guessing.
- Facial or neck swelling with fever, trouble breathing or swallowing, uncontrolled bleeding, or a serious face or jaw injury is a medical emergency. Call 911 or go to the ER. A knocked-out adult tooth needs a dentist right away.
- If stress ever feels overwhelming, you can call or text 988 at any time to reach the Suicide & Crisis Lifeline.
Not sure where to start? Answer a few gentle questions and choose who you’d like to hear from.
Frequently asked questions
What is a night guard for teeth grinding?
A night guard is a mouth cover worn during sleep that sits between the upper and lower teeth. It's meant to help protect teeth from wear caused by grinding or clenching. A dentist can tell you whether one makes sense for you.
Does a night guard stop teeth grinding?
Not necessarily. A night guard is generally designed to protect teeth and cushion the bite rather than stop the grinding itself. Ask your dentist what to realistically expect in your situation.
Is a custom night guard better than a store-bought one?
Each has a place, and the best choice depends on your mouth and your needs. Custom guards are made to fit your teeth, while store-bought ones are easier to get and may feel bulkier. Having a dental exam first is a wise step either way.
How do I know if I grind my teeth at night?
Common clues include a sore or tired jaw in the morning, worn or chipped teeth, or a partner who hears grinding. Only a dentist can confirm what is happening after an exam, so it's worth mentioning any signs at your next visit.
How much does a night guard cost?
Costs vary by practice, location and case, so there isn't one answer. Ask your dentist for a written treatment plan and estimate, and check with your insurance plan about what it covers.
How do I clean and care for a night guard?
Your dentist will give you care instructions that suit the material of your guard, and following them is the best approach. In general, people rinse and clean it regularly and store it in a case. Bring it to checkups so the dentist can see how it's holding up.
Educational resource. Tuung shares general information and connects people with independent dentists. It is not medical advice, diagnosis or treatment. Talk with a licensed professional about your health.