Most people who grind their teeth do not know they are doing it. It happens overnight, while you are asleep and completely unaware, which is exactly why it tends to go unnoticed until something else forces the issue — a headache that will not shift, a filling that cracks for no obvious reason, or a partner elbowing you awake because of the noise.
Bruxism is the clinical term for teeth grinding and clenching, and it is one of the more common things we pick up during a routine check-up at Sunny Dental Buderim. Here is what to look for, why it happens, and what actually helps.
The Signs You Might Be Grinding
Worn, flattened teeth. This is usually the first thing we notice during a check-up, often before the patient has any idea it is happening. Front teeth that were once slightly uneven start to look flat and square across the biting edge. In more established cases, the enamel has worn through in places, exposing the softer dentine layer underneath.
Jaw pain, tightness, or clicking. The muscles that power your jaw are some of the strongest in your body, and grinding puts them under sustained load for hours at a time. That can show up as a dull ache around the jaw joint, tightness on waking, or a clicking or popping sensation when you open wide.
Morning headaches. A headache that is worse first thing and eases as the day goes on, particularly one centred around the temples, is a classic bruxism pattern. It is often mistaken for tension headaches or poor sleep, when clenching jaw muscles overnight are the actual cause.
Cracked or failing fillings and crowns. If a filling or crown has failed more than once in the same spot, grinding is a common culprit — the forces involved in nighttime clenching are far greater than anything generated during normal chewing.
Your partner hears it. This is often how people first find out. A grinding or grating sound during sleep, sometimes loud enough to wake a partner in the next room, is one of the more reliable signs — and one you would never notice yourself.
Sensitive teeth. As enamel wears thin, the teeth underneath become more reactive to hot, cold, and sweet. Sensitivity that has crept in gradually, rather than appeared suddenly with one tooth, is often tied to grinding rather than decay.
If a few of these sound familiar, it is worth raising at your next visit — grinding is far easier to manage before it has caused significant wear.
Why People Grind Their Teeth
Bruxism rarely has one single cause, but a few factors come up again and again.
Stress is the biggest one. Clenching the jaw is a physical response to tension, often happening without any conscious awareness — during sleep, or during the day while concentrating on something stressful. We see it regularly in commuters travelling between Buderim and Brisbane, and in desk-based workers around Maroochydore managing long hours at a screen. A demanding stretch at work or a stressful period at home is often the trigger that brings it on or makes it worse.
Sleep disorders. Grinding is closely linked to disrupted sleep, including sleep apnoea. If you also snore or wake up feeling unrefreshed, it is worth mentioning to your GP alongside your dentist — the two issues often need managing together.
Bite misalignment. Where teeth do not meet evenly, the jaw can find itself grinding against high spots as it searches for a more comfortable resting position. This is one of the reasons a dental check-up is the right place to start rather than guessing at the cause yourself.
Lifestyle factors. Caffeine, alcohol, and smoking are all associated with a higher likelihood of grinding, and some medications list bruxism as a known side effect.
The TMJ Connection
The jaw joint itself — the temporomandibular joint, or TMJ — takes the brunt of prolonged grinding and clenching. Over time, the extra load can lead to TMJ dysfunction: joint pain, clicking or grating sounds, jaw fatigue, or in some cases a jaw that feels like it is catching or locking.
Bruxism and TMJ problems often arrive together, and treating one without addressing the other tends not to hold. If jaw pain, clicking, or restricted opening is part of your picture, it is worth a proper look — we cover this in more detail on our TMJ treatment page.
Why Over-the-Counter Mouthguards Fall Short
It is tempting to pick up a boil-and-bite mouthguard from the pharmacy and assume the problem is solved. In practice these tend to disappoint: they are bulky, they do not sit precisely against your bite, and because they are soft and uneven in thickness they can actually encourage more clenching rather than less.
A properly fitted guard needs to distribute the forces of grinding evenly across your bite and hold your jaw in a stable position. A generic, one-size-fits-all guard cannot do that with any reliability.
How We Treat It
A custom-made mouthguard is the starting point for most patients. We take an accurate impression or scan of your teeth and have a guard made specifically to your bite, in a material and thickness matched to how heavily you grind. Unlike a pharmacy guard, it sits precisely and actually protects your teeth and jaw joint rather than just cushioning the impact. Full detail on the process is on our mouthguards page.
Managing the contributing factors matters just as much as the guard itself. If stress is driving the grinding, simple changes like reducing evening caffeine or building in a wind-down routine before bed can meaningfully reduce how often it happens. Where a sleep disorder looks likely, we will suggest following it up with your GP alongside the dental side of things. And if your bite is contributing, we can talk through whether adjustment is appropriate.
Ongoing monitoring through your regular check-ups lets us track wear over time, catch any new cracks or chips early, and adjust your guard as needed. Grinding tends to fluctuate with life circumstances, so what works well now may need revisiting in a year or two.
When to Get It Checked
You do not need to be certain you grind your teeth before booking in — that is exactly what a check-up is for. If you have noticed jaw tightness, morning headaches, a partner mentioning the noise, or a filling that has failed more than once, it is worth having a look sooner rather than later. Left unmanaged, grinding wears through enamel, cracks teeth, and puts lasting strain on the jaw joint — all more straightforward to prevent than to repair.
We see this regularly across the practice, from university students at USC Sippy Downs juggling study and part-time work through to Buderim’s many retirees managing decades-old fillings and crowns under unexpected load. Whatever your situation, a proper look at your bite and your teeth is the place to start.
If any of this sounds familiar, book a check-up with Sunny Dental Buderim and we will take a proper look at your bite, your teeth, and your jaw. Call us on (07) 5445 8400 — we are at 2/64 King Street, Buderim, and see patients from across the Sunshine Coast, including Sippy Downs, Mountain Creek, Maroochydore, Mooloolaba, and Forest Glen. Open Monday to Friday, 8:30am to 5:30pm.