Waking up with a sore jaw or a dull headache more mornings than not is easy to brush off as a bad night’s sleep. But if it keeps happening, the real cause might be something you’re not even aware of while it’s happening: bruxism, or chronic teeth grinding and clenching.

Bruxism is common, often silent, and can quietly cause serious damage to your teeth and jaw over time. Here’s what causes it, how to recognize it, and what Weston Dental Office in Toronto can do to help protect your smile.

What Is Bruxism?

Bruxism is the involuntary grinding, gnashing, or clenching of teeth, and it comes in two forms. Awake bruxism happens during the day, often tied to concentration or stress, while people usually don’t realize they’re doing it. Sleep bruxism happens at night and is classified as a sleep-related movement disorder, which is why it’s frequently harder to catch until damage has already started.

Because so much of it happens unconsciously, many people only discover they grind their teeth when a partner mentions the noise or a dentist spots the wear during a routine exam.

What Causes Teeth Grinding?

Bruxism doesn’t have one single cause. It’s usually the result of a combination of factors, including:

• Stress and anxiety — by far the most common trigger, especially for daytime clenching
• Sleep disorders, including sleep apnea
• Misaligned bite or crooked teeth, which can cause the jaw to grind to find a comfortable position
• Lifestyle habits, such as high caffeine or alcohol intake, smoking, or recreational drug use
• Certain medications, including some antidepressants
• Age, as bruxism is more common in children and tends to ease with adulthood in many cases

Identifying the underlying cause matters because it shapes the right treatment. A mouth guard protects the teeth either way, but addressing stress or a sleep disorder can reduce how often grinding happens in the first place.

Signs and Symptoms to Watch For

Bruxism can be subtle at first, which is part of why it goes undiagnosed for so long. Common signs include:

1. Jaw soreness or tightness, especially first thing in the morning
2. Frequent headaches near the temples
3. Teeth that look flattened, chipped, or increasingly sensitive
4. Clicking, popping, or pain in the jaw joint (TMJ)
5. Cheek tissue damage from chewing
6. A partner reporting grinding noises at night

If any of these sound familiar, it’s worth bringing up at your next visit, even if you’re not sure grinding is actually the cause.

Why Untreated Bruxism Is a Problem

Left unmanaged, chronic grinding places far more pressure on your teeth and jaw than normal biting and chewing ever would. Over time this can wear teeth down, crack or loosen them, and put existing dental work at risk. Fillings, crowns, and even dental implants can fail faster under the constant strain of grinding, which turns a manageable habit into a much costlier repair down the line.

Bruxism can also contribute to gum recession and added stress on the tissues supporting your teeth, which is why our periodontal surgery team sometimes sees grinding as a contributing factor in gum health cases. In more advanced cases, chronic wear can even affect the fit and appearance of cosmetic work, making cosmetic dentistry touch-ups necessary sooner than expected.

Treatment Options: Night Guards and Beyond

The most effective and widely recommended treatment for bruxism is a custom-fitted night guard. Unlike over-the-counter versions, a guard made from a mould of your own mouth fits securely, stays comfortable through the night, and is built to absorb the pressure of grinding so your teeth don’t have to.

Beyond a night guard, a full treatment plan may include:

• Stress-reduction techniques, such as deep breathing or relaxation exercises before bed
• Cutting back on caffeine, alcohol, or nicotine, particularly in the evening
• Addressing an underlying sleep disorder with your physician
• Correcting a misaligned bite where that’s a contributing factor
• Daytime awareness strategies to catch and stop clenching before it becomes a habit

Because bruxism is often connected to stress or sleep quality, treating it sometimes involves more than dentistry alone. Your dentist can help identify when it makes sense to loop in a physician or sleep specialist.

When to See Your Dentist

Bruxism rarely fixes itself, and the earlier it’s addressed, the less wear your teeth take on. During a routine visit through our general dentistry services, we check for the flattening, chipping, and jaw tenderness that point to grinding, often before patients notice anything themselves. According to Health Canada, regular dental checkups are one of the most effective ways to catch oral health problems, including bruxism, before they lead to bigger complications.

FAQs

Can children grind their teeth too?

Yes. It’s fairly common in children, especially around the time baby teeth emerge and again when permanent teeth come in. Most children outgrow it, but it’s still worth mentioning to your dentist.

Will a store-bought mouth guard work just as well?

Not usually. Over-the-counter guards are bulkier, fit less precisely, and tend to wear out faster than a custom guard made specifically for your bite.

Is bruxism always caused by stress?

No. Stress is the most common factor, but sleep disorders, bite alignment, certain medications, and lifestyle habits can all play a role, sometimes together.

Protect Your Smile at Weston Dental Office

If you’re waking up with jaw pain or noticing new wear on your teeth, don’t wait for it to get worse. Our team can assess your bite, check for signs of grinding, and fit you with a custom night guard designed to protect your smile.

Call Weston Dental Office at (416) 247-1928 or book an appointment today. We’re located at 1928 Weston Rd, York, ON, and proudly serve patients across Toronto and the GTA.