Maybe you wake up with a sore jaw and a headache you can’t quite explain. Or your partner has pointed out that you make grinding sounds at night. If any of this sounds familiar, you may be dealing with bruxism.
What you’re describing is bruxism: the involuntary clenching or grinding of teeth, usually during sleep but sometimes during the day too. It’s more common than most people realise. Research suggests that somewhere between 8 and 10 percent of adults grind regularly, and a significant number have no idea they’re doing it until a dentist spots the evidence on their teeth.
This guide is a practical introduction: what bruxism is, how to recognise the signs in yourself, why the causes are rarely simple, what happens when it’s left untreated, and the treatment options available. The Smile Collective provides bruxism assessment and management across all six locations: Greensborough, Mooroolbark, Oakleigh, Strathmore, Mount Eliza, and Mornington.
What is bruxism?
Bruxism is the clinical term for involuntary clenching or grinding of the teeth. There are two forms, and they’re worth knowing about because they have different triggers and respond differently to treatment.
- Sleep bruxism
This happens while you’re asleep, often without any awareness whatsoever. You might grind through multiple cycles in a single night and wake with no specific memory of it. Sleep bruxism is classified as a sleep movement disorder, and research has shown it often clusters around disruptions to the normal breathing cycle, which is why the link to snoring and sleep apnoea is so clinically significant. - Awake bruxism
Awake bruxism is the daytime form. People tend to clench rather than grind, and it usually happens during moments of focus or stress, like driving, working, or taking a difficult call. It often goes unnoticed for a long time. Clenching can produce forces that rival those from chewing, which is part of why the damage is more significant than people expect.
Some jaw tension and occasional grinding is completely normal under stress. The issue is when it becomes habitual, starts leaving physical signs on the teeth, or interferes with sleep quality.
Signs you may be grinding your teeth, even if you don’t realise it
Because sleep bruxism happens unconsciously, many people are not diagnosed until a dentist spots it during a routine check-up. But there are a number of symptoms you can look out for yourself. The more of these you recognise, the more worthwhile it is to bring it up at your next appointment.
- Waking with a sore, tired, or stiff jaw: this is one of the most consistent symptoms of sleep bruxism, and it tends to be worst first thing in the morning
- Frequent dull headaches, particularly around the temples or behind the eyes: the temporalis muscle, which is heavily recruited during clenching, attaches along the side of the skull and can refer pain across a wide area
- Earache without any sign of ear infection: the TMJ (temporomandibular joint), the hinge joint connecting your lower jaw to your skull, sits directly in front of the ear canal, and referred pain from an overworked jaw is often mistaken for an ear problem
- Flattened, chipped, or worn-down tooth edges: teeth wear into each other when ground together over years, and front teeth in particular can lose their natural shape and biting edge
- Increased sensitivity to cold: as enamel wears away, the dentine layer beneath it (which is more porous and connected to the nerve) becomes exposed
- Tightness, soreness, or a ‘full’ feeling in the cheek muscles, especially the masseter muscles on the sides of the face just below the cheekbones
- Disrupted sleep, restless nights, or your partner reporting grinding sounds
- Scalloped indents along the sides of your tongue, or a raised ridge of tissue running along the inside of your cheeks at the line where the upper and lower teeth meet
- Clicking, popping, catching, or locking of the jaw when you open or close your mouth: a sign the TMJ may already be affected
Not every bruxer will have all of these symptoms. Some people grind significantly and experience minimal discomfort for years, while others develop symptoms quickly. Either way, the damage to teeth accumulates silently.
What causes teeth grinding?
This is where bruxism gets genuinely complicated, because there is rarely a single cause. Most cases involve a combination of factors, and working out which ones are most relevant to you is an important part of getting effective treatment.
- Stress and anxiety: This is the most commonly cited trigger in adults. your jaw tends to absorb physical tension, and many people clench or grind without realising they’re doing it
- Sleep apnoea and disordered breathing: There is a well-documented association between sleep bruxism and obstructive sleep apnoea. Grinding episodes often occur in clusters around airway obstructions during sleep. In some cases, treating the airway problem resolves the bruxism
- Bite problems (malocclusion): an uneven bite forces the jaw muscles to keep working to find a comfortable resting position. That constant effort can drive grinding, especially during sleep
- Caffeine, alcohol, nicotine, and recreational substances: All four are associated with increased bruxism activity, particularly when consumed in the hours before bed. Alcohol in particular is known to fragment sleep architecture, which may increase the frequency of grinding episodes
- Certain medications: Some antidepressants (particularly SSRIs) and stimulant medications used for ADHD have bruxism listed as a documented side effect. This is relatively uncommon, but worth discussing with both your GP and your dentist if you’re on these medications and experiencing symptoms
- Genetics: Bruxism does appear to run in families, which suggests a hereditary component alongside environmental and psychological factors
- In children: Teeth grinding is very common in children, often linked to teething, ear infections, or normal jaw development. The vast majority outgrow it without any intervention needed
Why untreated bruxism matters
Bruxism is one of those conditions that can feel manageable right up until it isn’t. The symptoms are often vague and easy to attribute to other things: stress, bad posture, not enough sleep. But the cumulative physical damage is real, and it tends to accelerate as the teeth wear thinner and the jaw joint comes under increasing load.
- Tooth damage
Over time, grinding literally wears teeth away. The biting edges go flat, enamel erodes, and fillings start breaking down faster than usual. Because you can’t regrow enamel, this kind of damage stays. Left long enough, it can get to the point where crowns or root canals are needed. - TMJ dysfunction
Long-term bruxism puts a lot of strain on the TMJ (temporomandibular joint), and TMJ dysfunction is a common result. Pain, clicking, limited jaw opening, and occasional locking are all signs it’s become affected. The jaw joint isn’t designed for that level of sustained force, and once problems develop they can be slow to resolve. - Headaches and facial pain
The muscles responsible for grinding (mainly the masseter and temporalis) become chronically overworked. Tight, fatigued muscles refer pain across the jaw, temples, and into the neck and shoulders. Many bruxism sufferers spend years treating headaches as a primary problem without realising the jaw is the source. - Damage to dental restorations
Veneers, crowns, bridges, and implants all carry a much higher risk of early failure if bruxism goes untreated. Whether you already have restorative work or are planning to get some, managing teeth grinding first is important for protecting it long-term.
How is bruxism diagnosed?
In a lot of cases, bruxism gets picked up at a regular check-up before the patient even suspects it. The key signs your dentist is looking for: flattened or chipped tooth edges, cracked fillings, sensitive or tight jaw muscles, and indents along the tongue. Serial photos and bite records help track whether the damage is progressing.
For more complex or severe cases where sleep-related causes are suspected, your dentist may recommend a sleep study to investigate bruxism patterns and rule out or confirm co-existing obstructive sleep apnoea. The relationship between the two conditions is close enough that investigating them together is often clinically worthwhile.
Treatment options for bruxism
The good news is that most bruxism is very manageable. Treatment generally starts with the simplest, most reversible options and layers in additional approaches if needed.
- Custom-fitted occlusal splints (night guards)
A custom occlusal splint is the go-to treatment for sleep bruxism. It’s made from impressions of your own teeth and sits over the upper or lower arch, acting as a cushion between the teeth. It takes the grinding pressure off the tooth surfaces and jaw joint. The fit is far more precise than anything off the shelf, and most people find them comfortable enough to wear full-time within a week or two. - Stress management and lifestyle changes
Bruxism and stress feed into each other, so managing one helps with the other. Regular exercise, better sleep routines, evening mindfulness, and cutting back on caffeine and alcohol before bed have all shown measurable reductions in grinding frequency. If anxiety is a significant factor, it’s worth speaking with a GP or psychologist. - Habit-awareness training for daytime clenching
With awake bruxism, awareness itself is usually the main tool. Most people have no idea they’re doing it. Something as simple as a sticky note on the monitor or an hourly phone reminder to check your jaw position can make a real difference. You’re aiming for a resting position where lips are together but teeth are apart. - Treating co-existing sleep apnoea
There’s a strong overlap between sleep apnoea and bruxism. Sorting out the breathing issue often improves the grinding as a side effect. Talk to your dentist about getting a sleep study done. From there, options include dental appliances or CPAP. - Bite correction
Occasionally the issue comes down to how the teeth meet. If the bite is genuinely misaligned, an orthodontist or targeted adjustment to the bite may be part of the plan. It’s not routine, but it does address something a splint can’t. - Muscle relaxant injections
For severe or hard-to-treat cases, botulinum toxin (Botox) injected into the masseter muscles can reduce their size and the forces they produce. It’s a specialist-level option, reserved for situations where other treatments haven’t worked well enough, and not something used as a starting point.
Why choose The Smile Collective for Teeth Grinding (Bruxism) Treatment in Melbourne (Greensborough, Mooroolbark, Oakleigh, Strathmore) and Mornington Peninsula (Mount Eliza, Mornington)
The Smile Collective brings together six experienced dental teams across Melbourne and the Mornington Peninsula. Our clinics, formerly known as Diamond Valley Dental Group (Greensborough), Mooroolbark Family Dental, Station Square Dental (Oakleigh), Strathmore Dental Surgery, and Peninsula Smiles (Mount Eliza and Mornington), have extensive collective experience in managing bruxism and its downstream effects on teeth, the jaw joint, and overall oral health.
Here is what patients across our six locations can expect:
- Custom-fitted occlusal splints: Precise, comfortable night guards made from detailed impressions of your teeth, designed to protect your enamel and reduce jaw muscle strain. Far superior to anything available over the counter
- TMJ assessment and management: Full jaw joint assessment, including referral to a specialist where needed. See our TMJ dysfunction page for more detail
- Sleep-related screening: Where appropriate, we can assess for signs of sleep apnoea contributing to bruxism and discuss management options or arrange referral for a sleep study. See our snoring and sleep apnoea page
- Monitoring and review: Scheduled reviews that use photos and records to track wear, so problems get caught before they become harder to treat
- Six convenient locations: Greensborough, Mooroolbark, Oakleigh, Strathmore, Mount Eliza, and Mornington. patients dealing with acute jaw pain can often get a same-day appointment
Book a bruxism assessment at your nearest clinic: Greensborough | Mooroolbark | Oakleigh | Strathmore | Mount Eliza | Mornington
Further reading
- Bruxism & Teeth Grinding Treatment at The Smile Collective
- Custom-Fitted Mouthguards at The Smile Collective
- TMJ Dysfunction Assessment & Management at The Smile Collective
- Snoring & Sleep Apnoea at The Smile Collective
