Grinding your teeth at night, known as bruxism, is usually caused by a combination of stress, an uneven bite, or a sleep disorder, and most people who do it aren't aware of it until a dentist points out the wear or a partner mentions the sound. Left alone, it gradually flattens and cracks teeth and can lead to jaw pain or headaches. A custom-fitted night guard is the most common and effective way to protect teeth from the damage while the underlying cause is addressed.
Common Signs You're Grinding Your Teeth
- Waking up with a sore or tight jaw, especially first thing in the morning
- Frequent dull headaches near the temples after waking
- Teeth that look shorter, flatter, or chipped compared to a few years ago
- Increased tooth sensitivity to hot or cold without an obvious cavity
- A partner or family member mentioning they can hear grinding at night
- Unexplained wear on a night guard or retainer you already wear
Any one of these on its own isn't necessarily bruxism, but a few of them together are a strong enough signal to have it looked at, since the wear itself doesn't reverse on its own.
What Causes Nighttime Teeth Grinding?
Stress and anxiety are the most commonly cited triggers, and grinding often gets noticeably worse during particularly demanding stretches of life. An uneven bite, where the upper and lower teeth don't meet quite right, can also cause the jaw muscles to clench and grind as they search for a comfortable resting position. Sleep disorders, including sleep apnea, are linked to bruxism as well, since disrupted sleep and grinding often show up together. In many patients, it's a mix of more than one of these rather than a single clean cause.
What Happens If It's Left Untreated
Grinding doesn't stay the same severity indefinitely - it tends to progress. Flattened edges become chips, chips become cracks, and cracks eventually put a tooth at risk of fracture in a way that requires a crown or worse. The jaw muscles involved in grinding can also become chronically sore, and some patients develop TMJ-related pain that radiates into the ears or neck. None of that requires waiting years to develop; a few months of unaddressed heavy grinding can visibly change a tooth's shape.
How a Night Guard Actually Helps
A night guard doesn't stop the grinding itself, but it puts a barrier between the upper and lower teeth so the force of grinding wears the guard instead of the enamel. A custom night guard, made from an impression of your own teeth, fits precisely and stays in place through the night, unlike a one-size boil-and-bite version that can feel bulky and tends to get left in the nightstand drawer instead of worn. For patients whose grinding is tied to an uneven bite, a guard can also help the jaw settle into a more relaxed resting position.
Custom Night Guard vs. Store-Bought Mouthguard
A store-bought guard is boiled and bitten into shape at home, which produces a rough approximation of a fit rather than an accurate one. That's usually fine for occasional sports use, but for something worn every night for years, a loose or bulky fit gets uncomfortable fast, and an uneven guard can actually make jaw clenching worse rather than better. A custom-fitted night guard in Christiansburg is built from an impression of your own bite, so it stays put, feels less intrusive, and holds up to nightly wear far longer than a generic one ever does.
Frequently Asked Questions
How do I know if I actually grind my teeth?
Since it happens while you're asleep, most people find out from a dentist noticing wear patterns during a checkup, from a partner mentioning the sound, or from waking up with jaw soreness or headaches on a regular basis.
Can teeth grinding go away on its own?
Sometimes mild, stress-related grinding eases up once the underlying stress does, but there's no way to predict that in advance, and the wear that's already happened doesn't reverse itself. A night guard protects your teeth in the meantime regardless of the cause.
Is a night guard the same as a retainer?
No. A retainer is built to keep teeth from shifting position after orthodontic treatment, while a night guard is built to absorb the force of grinding and clenching. Some patients need one, the other, or occasionally both, which is worth discussing at an exam rather than assuming.
How long does a custom night guard last?
With normal nightly wear, a well-made night guard typically lasts several years before it needs replacing, though heavy grinders may wear through one faster than light grinders do.
If mornings regularly start with a sore jaw or a headache, it's worth having your teeth grinding treatment in Christiansburg looked at before the wear adds up. As a dentist in Christiansburg, Opulent Dental can check for the signs during an exam and fit a custom night guard built around your actual bite. Schedule an appointment to get it looked at.
Medically Reviewed By
Dr. George is a general dentist at Opulent Dental with a special interest in dental implants and restorative dentistry. He earned his Doctor of Dental Medicine from the Lake Erie College of Osteopathic Medicine (LECOM) and is licensed to practice in Virginia.