5 Signs You’re Grinding Your Teeth at Night (And What To Do About It)
Are You Grinding Your Teeth Without Knowing It? Here’s What to Look For
Teeth grinding — clinically known as bruxism — is one of the most under-diagnosed problems I see in my patients at The Grove Dental Rouse Hill. The reason it goes undetected for so long is simple: it usually happens while you’re asleep. By the time patients notice something is wrong, there’s often already measurable damage to the teeth, the jaw joint, or both. If you’ve been waking up with a sore jaw, tension headaches, or your partner has mentioned hearing a grinding noise at night, this post is for you. Let me walk you through the five signs I see most often — and what we can do about it.
Why Does Teeth Grinding Happen?
What causes people to grind their teeth?
In my experience, bruxism rarely has a single cause. It’s usually a combination of factors working together. Stress and anxiety are the biggest contributors I see clinically — and that’s worth taking seriously in winter, when cold weather disrupts sleep, routines shift, and many people are carrying more tension in their bodies than usual. The jaw muscles are remarkably responsive to emotional stress, and for some people, grinding is how that tension releases during sleep.
Other common contributing factors include sleep disorders like sleep apnoea, certain medications (particularly some antidepressants), bite misalignment where the upper and lower teeth don’t sit together evenly, and high caffeine or alcohol intake. I always take a thorough history with any patient I suspect may be grinding, because understanding the likely driver helps us choose the right management approach.
The 5 Signs You Might Be Grinding Your Teeth
How do I know if I’m grinding my teeth if I’m asleep when it happens?
This is exactly the right question, and it’s one I hear constantly. Here are the five signs I look for — both as a clinician and as things patients notice themselves:
1. You wake up with jaw pain, facial soreness, or a dull headache. The muscles you use to grind — the masseter and temporalis muscles — are powerful. Working them hard all night leaves them sore in the morning, much like any overused muscle. Morning headaches concentrated around the temples are a classic sign.
2. Your teeth look shorter, flatter, or more translucent at the edges. When I look at a grinder’s teeth, I can often see visible wear on the biting surfaces. Teeth that were once rounded and natural-looking become flat and almost glassy at the edges. This is one of the most reliable clinical signs I use to flag potential bruxism during a routine check-up.
3. You have increased tooth sensitivity. As the protective enamel layer wears down from grinding, the underlying dentine becomes exposed. Dentine is far more sensitive to temperature changes and sweet foods, so if your sensitivity has crept up gradually with no obvious cause, grinding may be contributing. I covered tooth sensitivity in detail in a separate post if you want to read more on that.
4. You notice clicking, popping, or pain in your jaw joint. Grinding puts significant load on the temporomandibular joint (TMJ) — the hinge that connects your jaw to your skull. Over time, this can lead to clicking or popping sounds when you open and close your mouth, limited jaw movement, or a dull ache in front of the ears. Our Teeth Grinding and TMJ Treatment page explains how we assess and address this.
5. Your partner tells you they can hear grinding sounds while you sleep. This one is unmistakable. The sound of teeth grinding can be quite audible — enough that a sleeping partner notices before you do. If someone has mentioned it, please don’t brush it off. It’s a genuinely useful piece of information that’s worth bringing up at your next appointment.
What Happens If You Leave Teeth Grinding Untreated?
Is teeth grinding actually serious, or will it sort itself out?
I always tell patients this: tooth enamel does not grow back. Once it’s worn away, it’s gone. That’s why I treat bruxism seriously even in its early stages. Left untreated, grinding can lead to cracked or fractured teeth, worn-down enamel that requires restoration with crowns or veneers, chronic jaw pain and TMJ disorders, and in severe cases, significant structural damage that becomes complex and costly to address.
If you’ve already invested in cosmetic dental work — Porcelain Veneers, composite bonding, crowns — grinding is particularly important to address. I’ve seen beautiful restorations chip or fracture because unmanaged bruxism was putting excessive force through them. Protecting that investment is just as important as placing it correctly in the first place.
How Is Teeth Grinding Treated?
What can a dentist actually do about teeth grinding?
The most common and effective first-line treatment is a custom-fitted Occlusal Splint — also called a nightguard. This is a precision-made device that sits over your teeth while you sleep, absorbing the grinding forces and protecting both your teeth and your jaw joint. At The Grove Dental, we take detailed impressions to ensure the splint fits accurately and comfortably. A poorly fitted splint can actually make things worse, which is why I’m always cautious about the over-the-counter boil-and-bite options available from pharmacies.
Beyond the splint, we look at what’s driving the grinding. If stress is a significant factor, I often suggest patients explore this alongside their GP. If bite alignment is contributing, orthodontic treatment may be part of the longer-term plan. In some cases, Cosmetic Injectables administered into the jaw muscles can reduce their activity and provide significant relief from jaw tension and associated headaches — this is a treatment some of my patients find genuinely life-changing.
Where there is already visible wear or damage, we’ll discuss what restorative options make sense — whether that’s monitoring, tooth-coloured fillings, or in more advanced cases, crowns. The approach always depends on what I find on examination and what you’re experiencing day-to-day.
Questions I Get Asked Most
Can stress really cause teeth grinding?
Yes, and it’s one of the most common triggers I see. The jaw is deeply connected to the body’s stress response. Many patients don’t even realise how much tension they’re holding until I point out the signs of wear. Managing stress is genuinely part of managing bruxism.
Will a nightguard stop me from grinding, or just protect my teeth?
A well-fitted nightguard primarily protects your teeth and jaw joint from the forces of grinding — it doesn’t stop the grinding reflex entirely. However, many patients report less jaw soreness and better sleep quality once they’re wearing one consistently, which suggests there may be some reduction in muscle activity as well. It depends on the individual.
How do I know if I need a nightguard or something more?
That’s exactly what a thorough clinical assessment is for. At your appointment, I’ll examine the wear patterns on your teeth, assess your jaw joint, review your symptoms, and take a full history. From there, we put together a plan that matches your situation. There’s no one-size-fits-all answer.
My teeth look fine — could I still be grinding?
Absolutely. In the early stages, wear may not be visually obvious to you, but I can see subtle changes that most patients miss. Jaw soreness, morning headaches, and reports from a partner are often the first clues, well before the teeth look noticeably different.
Is teeth grinding more common in winter?
I do see an uptick in patients reporting jaw pain and grinding-related symptoms during winter. Cold weather increases muscle tension throughout the body, sleep is often more disrupted, and stress levels tend to run higher. It’s a good time of year to have your teeth assessed if you’ve been noticing any of these signs.
Can children grind their teeth too?
Yes, bruxism is actually quite common in children, particularly during periods of tooth development. Most children grow out of it without lasting damage, but it’s worth mentioning to your dentist if you notice it. I always check for grinding signs during children’s check-ups at The Grove Dental.
How much does a nightguard cost at The Grove Dental?
The fee for a custom Occlusal Splint depends on the complexity of your case and what’s involved in your assessment. For current fees, I’d encourage you to download our New Patient Guide, which has a full breakdown. We also offer payment plans through Zip, Afterpay, and Humm if that’s helpful — details are on our payment options page.
Think You Might Be Grinding? Let’s Take a Look
If any of the signs in this post sound familiar, I’d genuinely encourage you not to wait. Bruxism is one of those problems that gets quietly worse in the background — and the earlier we catch it, the simpler the solution tends to be. Whether you’re new to the area or have been meaning to come in for a while, I’d love to see you for a proper assessment.
New patients can book a Comprehensive Dental Assessment, which is capped in fee or gap-free with eligible private health cover. During that appointment, I assess for wear, check your jaw joint, and give you a full picture of what’s going on. No surprises here.
Book an appointment online, call us on (02) 8817 2879, or visit us at G01/320 Annangrove Rd, Rouse Hill NSW 2155. We’re open Monday to Friday, 8:30am to 5:30pm.
This content is general information only and is not a substitute for personalised dental advice. Results and treatment outcomes vary by individual. Please consult a qualified, AHPRA-registered dentist for advice specific to your situation. For more information visit thegrovedental.com.au.
