Most people who grind their teeth have no idea they’re doing it. The grinding happens at night, while they’re completely asleep, and the only evidence shows up later. A dull headache in the morning. Jaw soreness that won’t quit. Teeth that look shorter than they used to. A partner who mentions a strange noise coming from your side of the bed.
At TLC Dental Center in Cherry Hill, NJ, Dr. Julie Kardon sees the effects of bruxism regularly. It’s one of those conditions that causes real, progressive damage before most patients even connect the symptoms to their teeth. The good news is that once it’s identified, it’s very manageable. The harder part is catching it early enough to prevent the worst of it.
This post covers what bruxism actually is, the signs that point to it, what happens to your teeth if it goes untreated, and the options available to protect your smile.
What Is Bruxism?
Bruxism is the clinical term for teeth grinding and clenching. It falls into two categories based on when it happens.
Sleep bruxism occurs during the night. Because it happens unconsciously, most people don’t realize they have it until a dentist spots the wear patterns or a symptom becomes noticeable enough to prompt a conversation.
Awake bruxism happens during the day, often during stress. Some people clench their jaw while driving, concentrating, or sitting through a tense conversation. This type is usually easier to catch because the person is conscious when it happens.
Both types create cumulative pressure on teeth and the surrounding structures. The jaw muscles involved in chewing are among the strongest in the body. The force they generate during grinding can reach levels that far exceed anything produced by normal chewing. Over months and years, that adds up.
Signs You Might Be Grinding Your Teeth
Because sleep bruxism is so easy to miss, it’s worth knowing the indirect signs. Many of them show up outside the mouth.
Morning headaches. This is one of the most common complaints. The muscles used during grinding attach near the temples and the base of the skull. Hours of sustained tension overnight can leave those muscles fatigued and sore by morning. Patients often describe it as a headache that’s already there when they wake up, not one that builds through the day.
Jaw soreness or stiffness. The jaw may feel tight or difficult to open fully, particularly in the first hour after waking. This is the masseter muscle and temporomandibular joint recovering from a night of overwork.
Ear pain without an ear infection. The temporomandibular joint sits just in front of the ear canal. Inflammation or tension in that joint can produce a deep ache that feels like it’s coming from the ear. Patients sometimes treat this as an earache for months before the real cause is identified.
Tooth sensitivity. Grinding wears away enamel, the outer protective layer of the tooth. As that layer thins, the dentin underneath becomes more exposed. Dentin contains tiny tubules connected to the nerve, which is why worn teeth react to hot, cold, and sweet.
Flat, chipped, or worn teeth. A dentist can see this clearly in the mouth. Teeth that should have natural rounded cusp shapes begin to look flat across the top. The edges of front teeth may look chipped or increasingly straight. This kind of wear is a direct signature of grinding.
Cheek or tongue bite marks. Some patients press their tongue or cheek against their teeth while they sleep, leaving scalloped impressions along the sides of the tongue or small sores on the inside of the cheek.
Your sleep partner hears it. The grinding sound can be audible. Not always, but frequently enough that partners mention it.
Why Bruxism Happens
There’s rarely a single cause. Bruxism tends to be multifactorial, meaning several contributing factors overlap.
Stress and anxiety are the most commonly cited triggers. The jaw holds tension. For many people, unresolved emotional stress gets processed physically during sleep as clenching and grinding.
Sleep disorders play a significant role. Sleep apnea and bruxism frequently occur together, and research has shown a meaningful connection between disordered breathing during sleep and nighttime grinding. Treating the sleep disorder sometimes reduces the bruxism.
Bite misalignment can contribute when teeth don’t fit together properly. The jaw may shift and compensate during sleep.
Certain medications, particularly some antidepressants in the SSRI class, list bruxism as a potential side effect. Caffeine and alcohol can also amplify it.
Personality and coping style matter too. People who are naturally more high-strung, competitive, or prone to internalizing stress tend to show higher rates of bruxism.
Understanding the likely cause is useful because it informs the treatment approach. A nightguard protects the teeth regardless of cause, but addressing an underlying stressor or sleep issue can reduce how frequently or intensely the grinding happens.
What Happens When Bruxism Goes Untreated
This is where the stakes become clear. Grinding isn’t just uncomfortable. Left unchecked, it causes damage that ranges from cosmetically frustrating to structurally serious.
Enamel Loss
Enamel does not grow back. The body has no mechanism for replacing it once it’s worn away. As enamel thins from persistent grinding, teeth become more susceptible to decay, sensitivity, and fracture. Whitening becomes less effective on worn enamel. Restorations placed on heavily worn teeth are also harder to match cosmetically.
Cracked and Fractured Teeth
The repetitive, high-force contact of grinding can cause cracks in teeth over time. Some cracks are hairline fractures that are difficult to see but painful to bite on. Others progress into full breaks that require crowns or, in severe cases, extraction. A cracked tooth is not always something that can be repaired with a filling. The depth and location of the crack determine what’s possible.
TMJ Disorder
The temporomandibular joint is the hinge connecting the jaw to the skull. Bruxism puts chronic, repetitive stress on this joint. Over time, this can lead to TMJ disorder, sometimes called TMD.
Symptoms of TMJ problems include:
- Clicking or popping when opening and closing the mouth
- Pain in the jaw, face, or neck
- Difficulty opening the mouth wide
- A locked jaw that gets stuck open or closed
TMJ disorder can become its own chronic condition that requires separate treatment. Getting ahead of bruxism before it progresses to that point is significantly simpler and less costly than managing established TMD.
Gum Recession and Bone Loss
The excessive forces generated by grinding don’t only affect the crowns of teeth. They transmit down through the roots, stressing the ligaments and bone that hold teeth in place. Some patients with long-standing bruxism develop recession and bone loss that compounds any gum disease they may also have.
Restorative Failures
Patients who grind their teeth and don’t protect against it will wear down dental restorations faster than normal. Fillings, veneers, and crowns placed in a grinding mouth without a protective nightguard have a shorter lifespan. The investment in dental work gets diminished without protection.
Nightguard Options: What Actually Works
A custom nightguard is the most reliable first-line treatment for protecting teeth from bruxism. The key word there is custom.
Custom Dental Nightguards
A custom guard is fabricated from an impression of your actual teeth, made specifically for your bite. It fits precisely, stays in place during sleep, and provides even contact across all teeth so the grinding forces distribute rather than concentrate on individual teeth.
Custom guards are made from hard acrylic, soft materials, or a combination of both. Dr. Kardon can recommend the right type based on the severity of the grinding and how the jaw moves. Hard acrylic guards tend to hold up better for heavy grinders and are generally preferred for long term use.
Over-the-Counter Guards
Pharmacy nightguards are available, and they’re inexpensive. They’re also a significant step down from a custom appliance. Most are bulky, difficult to keep in place, and don’t provide even contact across the teeth. Some patients find them so uncomfortable that they stop using them. For mild cases or as a short-term measure, they’re better than nothing. For moderate to severe bruxism, they’re not a real solution.
What a Nightguard Does Not Do
A nightguard protects the teeth from wear and reduces muscle fatigue, but it does not stop the grinding behavior itself. Think of it as a shield, not a cure. For some patients, especially those whose bruxism is driven by stress, addressing the underlying anxiety through other means produces a more complete result. Stress management, therapy, and biofeedback have all shown benefit in reducing grinding frequency for some patients.
Frequently Asked Questions About Bruxism and Nightguards
How do I know if I need a nightguard or treatment for TMJ?
The two often go together. If you’re experiencing jaw pain, clicking, or headaches alongside wear patterns on your teeth, Dr. Kardon will evaluate both during your appointment. A nightguard can help both conditions in many cases, but significant TMJ symptoms sometimes require additional therapy or a different type of appliance.
Can children grind their teeth?
Yes. Bruxism is actually fairly common in children, particularly during primary tooth development and again when adult teeth are coming in. Most children outgrow it without intervention. However, if a child is waking with jaw pain or headaches, it’s worth discussing at their next dental visit.
How long does a custom nightguard last?
With proper care, a well-made custom nightguard typically lasts 3 to 5 years, though heavy grinders may go through them faster. The guard absorbs the forces that would otherwise go to your teeth, so some wear on the guard itself is expected and normal.
Will my dental insurance cover a nightguard?
Coverage varies by plan. Many dental insurance plans cover a portion of the cost for a custom nightguard, particularly when bruxism is documented. TLC Dental Center can help you understand your benefits and discuss payment options if coverage is limited.
Can stress management actually reduce grinding?
For some patients, yes. Studies have found that patients who actively work to reduce stress through exercise, therapy, or relaxation techniques report a reduction in grinding symptoms. It works best alongside a nightguard, not as a replacement for one. Both approaches together give the best outcome.
What happens if I just ignore it?
The damage will progress. Enamel loss is permanent. Cracked teeth become more likely. TMJ symptoms tend to worsen without intervention. The cost of treating advanced bruxism damage including crowns, implants, and TMJ therapy is significantly higher than the cost of a nightguard placed early.
Teeth grinding is not something to push to the back of your mind because the symptoms seem manageable right now. The damage accumulates quietly, and by the time it becomes obvious, the repair work is more involved.
If you wake up with headaches, notice jaw tension, or have been told your teeth look worn, a consultation with Dr. Kardon at TLC Dental Center in Cherry Hill is the right next step. Book an appointment today and find out whether a custom nightguard is the right fit for you.