Answered by Dr. Sarah Choi, Secure Dental in East Peoria, Illinois

“Most people who grind their teeth at night do not know they are doing it. They usually find out because a partner hears the grinding, they wake up with a sore jaw, or we show them flattened edges, small cracks, or changes in a digital scan.”

Occasional clenching may not cause permanent harm. Frequent or forceful grinding, however, can gradually wear through enamel, damage dental restorations, strain the jaw muscles, and increase the risk of cracked teeth.

The medical term for grinding or clenching is bruxism. It can happen while you are awake or asleep. Because sleep bruxism occurs without conscious awareness, the damage may progress for months or years before you recognize it.

How Do I Know If I Grind My Teeth at Night?

You may never hear yourself grinding, but your teeth and jaw can leave clues.

At home, watch for:

• Jaw soreness or tightness in the morning
• Morning headaches, especially near the temples
• Facial muscle fatigue
• Tooth sensitivity
• Pain when biting or chewing
• A partner hearing grinding sounds
• Chips that appear without an obvious injury
• Rough, flattened, or shortened tooth edges
• Cracks in fillings, crowns, or veneers

During an examination, we look for worn enamel, small fractures, damaged restorations, tender chewing muscles, changes in the bite, and areas where the upper and lower teeth have repeatedly contacted each other.

Secure Dental’s East Peoria office also offers a 3D smile assessment. The scan can help track tooth wear and create a visual heat map showing how forces are distributed across the bite. Traditional X-rays may still be used to evaluate the roots, bone, decay, or other concerns below the tooth surface.

A person can also clench without sliding the teeth back and forth. Clenching may create less visible wear, but it can still contribute to sore jaw muscles, headaches, and pressure on the teeth.

What Does Grinding Do to Teeth Over Time?

Enamel is strong, but it is not indestructible.

Repeated grinding can gradually flatten the chewing surfaces and edges of teeth. Once enamel has been worn away, the body cannot grow it back. The softer layer underneath, called dentin, may become exposed and make the teeth more sensitive.

Severe bruxism may contribute to:

• Flattened or shortened teeth
• Chipped enamel
• Cracked teeth
• Loose teeth
• Tooth sensitivity
• Jaw soreness or fatigue
• Facial pain
• Morning headaches
• Damaged fillings, crowns, veneers, or implant restorations

The National Institute of Dental and Craniofacial Research identifies worn enamel, chipped or cracked teeth, tooth sensitivity, jaw tightness, tired jaw muscles, headaches, and facial pain as possible signs of bruxism.

Grinding can also complicate cosmetic and restorative treatment. A new veneer or crown may look excellent, but it can still chip or fracture when exposed to uncontrolled nighttime forces. Our guide, “What’s the Difference Between a Crown and a Veneer?”, explains how these restorations protect different portions of a tooth.

Why Do People Grind Their Teeth?

Bruxism rarely has one universal cause.

Stress and emotional tension can play a role, particularly with daytime clenching. Some patients notice that they tighten their jaw while driving, concentrating, working at a computer, or dealing with a difficult situation.

Other possible contributing factors include:

• Anxiety or emotional distress
• Alcohol or caffeine consumption
• Tobacco use
• Certain medications
• Sleep disruption
• A family tendency toward bruxism
• Other medical or sleep-related conditions

The NIDCR lists stress, mood, genetics, alcohol, caffeine, smoking, and certain medicines among factors associated with bruxism.

During your examination, tell us about your medications, sleep quality, caffeine intake, alcohol use, stress level, and whether anyone has noticed snoring or unusual breathing while you sleep. Those details can help determine whether the concern appears limited to tooth protection or deserves additional medical evaluation.

Is Teeth Grinding Connected to Sleep Apnea?

Sleep bruxism and obstructive sleep apnea can occur in the same person, but that does not mean every person who grinds has sleep apnea or that one condition always causes the other.

Research has found a meaningful rate of co-occurrence. One sleep-laboratory study reported sleep bruxism in nearly half of the participating adults with obstructive sleep apnea. More research is still needed to understand exactly how the conditions are connected in different patients.

Grinding deserves additional attention when it occurs with signs such as:

• Loud, frequent snoring
• Pauses in breathing witnessed by another person
• Gasping or choking during sleep
• Persistent daytime sleepiness
• Morning dry mouth
• Morning headaches
• Difficulty concentrating
• High blood pressure

A dentist may recognize oral signs that raise concern, but a dentist does not diagnose obstructive sleep apnea based solely on tooth wear. Diagnosis may require evaluation by a physician and an overnight or home sleep study.

A standard bruxism night guard is also not the same as a sleep apnea appliance. Oral appliances for diagnosed sleep apnea are designed to reposition and stabilize the jaw or tongue to help maintain the airway. They should be prescribed as part of coordinated care between a qualified medical provider and dentist.

What Does a Night Guard Do?

A night guard creates a protective barrier between the upper and lower teeth.

Instead of natural enamel or a crown absorbing the full contact of grinding, the appliance receives much of that wear. A properly designed guard can separate the teeth, protect against additional damage, and may reduce some jaw-muscle activity.

A night guard may help:

• Protect natural enamel
• Reduce damage to crowns, veneers, and fillings
• Distribute biting forces
• Reduce morning muscle fatigue for some patients
• Give the dentist a surface that can be monitored for grinding patterns

Secure Dental’s East Peoria office provides custom night guards for patients who grind while sleeping.

Does a Night Guard Stop Teeth Grinding?

Not necessarily.

A night guard primarily protects the teeth from direct contact. It may reduce muscle activity or symptoms for some patients, but it does not guarantee that the brain and jaw muscles will stop producing grinding movements.

That is why treatment should not end with simply handing someone an appliance. We may also discuss stress reduction, daytime clenching awareness, sleep habits, medication concerns, caffeine or alcohol use, and whether a medical sleep evaluation is appropriate.

For daytime clenching, a helpful resting position is to keep your lips together while allowing the upper and lower teeth to remain slightly apart. Your teeth generally do not need to touch unless you are chewing or swallowing.

Custom Night Guard vs. Store-Bought Guard

Over-the-counter guards are widely available and may be useful as a temporary option for certain people. They are generally made in a stock size or softened in hot water so the patient can shape them at home.

The main limitation is fit. A bulky, loose, or uneven guard may be uncomfortable, fall out, interfere with sleep, or place force unevenly across the teeth.

A custom night guard is made from a dental impression or digital scan of your mouth. The dentist can select the material, evaluate the bite against the appliance, and adjust areas that contact too heavily.

The American Dental Association’s patient guidance states that a custom guard generally provides the closest and most comfortable fit, while store-bought products may not provide the same protection.

A night guard for grinding is also different from an athletic mouthguard. Sports guards are designed to cushion sudden impacts. Night guards are designed around repeated tooth contact during sleep.

Is a Night Guard Covered by Dental Insurance?

Coverage depends on your dental plan.

Some plans provide benefits for an occlusal guard when it is considered medically necessary. Others exclude it, limit how often it can be replaced, require documentation of tooth wear, or apply the cost to the deductible.

The ADA maintains separate procedure codes for full-arch hard guards, full-arch soft guards, and partial-arch hard guards, but having an applicable code does not guarantee that an insurance plan will pay for the appliance.

Before treatment, the Secure Dental team can review available benefit information or submit documentation when appropriate. The final coverage decision remains with the insurance carrier.

When Should I See a Dentist About Grinding?

Schedule an examination when you repeatedly wake up with jaw pain, notice new tooth sensitivity, develop morning headaches, break a restoration, or see your teeth becoming flatter or shorter.

Seek care more promptly if you have:

• A tooth that has cracked
• Severe pain when biting
• Swelling
• A tooth that feels loose
• Difficulty opening your mouth
• Jaw locking
• A major change in your bite

Do not wait for a tooth to break before asking about protection. Early signs of wear are usually easier to manage than a deep fracture.

Have Your Teeth Checked for Grinding Damage

A bruxism examination can help us determine whether you are grinding, how much damage has occurred, and whether a custom night guard is appropriate.

Request an appointment with Dr. Sarah Choi at Secure Dental, 502 Riverside Drive, East Peoria, Illinois 61611.

Call (309) 606-5008 or visit the Secure Dental East Peoria location page to request an appointment. The office provides custom night guards and 3D bite and tooth-wear assessments.

If your jaw also hurts during the day, watch for our related guide, “Why Does My Jaw Hurt? Could It Be My Teeth?”.

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