Written by Dr James Tran — principal dentist, Lumi Dental.
The quick answers
- Teeth grinding (bruxism) is often silent — most people find out from a partner, a headache pattern, or a dentist spotting the wear.
- A custom-made night guard (occlusal splint) protects enamel and fillings, reduces jaw muscle strain and is fitted from impressions of your teeth.
- Typical Sydney fees for a laboratory-made hard occlusal splint range from around $400 to $900, depending on design and materials, referencing the ADA NSW fee survey and comparable Sydney practices.
- Chemist "boil-and-bite" guards are inexpensive but are a compromise on fit and durability for long-term grinders.
- A dental assessment separates grinding from TMJ joint issues, tooth cracks or sleep-related breathing problems — the fix is different for each.
Most people who grind their teeth at night have no idea they are doing it — until a partner hears it, the jaw starts aching, or a check-up reveals flattened edges on the front teeth.
What teeth grinding (bruxism) actually is
Bruxism is the clenching or grinding of teeth, usually unconsciously. It can happen while you are awake (often during concentration or stress) or while you are asleep, where the forces are higher because the normal protective reflexes are reduced.
Sleep bruxism is considered a sleep-related movement behaviour rather than a habit you can simply stop. It is common in both adults and children, though many children grow out of it.
The problem is not the grinding itself — it is the load on your teeth, fillings and jaw muscles over months and years.
Signs and symptoms to look for
Bruxism is often picked up by the people around you or during a routine check-up. Common signs include:
- Audible grinding sounds at night, noticed by a partner.
- Morning jaw stiffness, tension around the temples, or headaches that ease during the day.
- Flattened, chipped or worn-down tooth edges, especially on canines and front teeth.
- Increased tooth sensitivity to cold or pressure, particularly if enamel is wearing thin.
- A clicking or tender jaw joint, or difficulty opening wide first thing in the morning.
- Indentations on the sides of the tongue or a ridge (linea alba) along the inside of the cheek.
If you are also waking with pain when you bite down, that can overlap with a cracked tooth or a high filling — which is why assessment matters.
Why grinding happens
There is rarely one single cause. Commonly discussed contributors include psychological stress and anxiety, sleep disturbances (including snoring and obstructive sleep apnoea), certain medications and stimulants such as caffeine, nicotine and alcohol, and bite or airway factors.
Because grinding can be a sign of an underlying sleep-breathing issue, your dentist may ask about snoring, daytime sleepiness and how rested you feel — and refer you for a sleep assessment if the pattern fits.
What happens at your Lumi Dental appointment
The first visit is diagnostic, not a rush to make a splint.
We review your history, including stress, sleep quality, caffeine and any new medications. We examine the teeth for wear facets, micro-cracks, worn-through fillings and gum recession.
We palpate your jaw muscles (masseter and temporalis) and jaw joints, check how far you can open, and listen for clicks or jumps.
Photographs and occasionally scans or X-rays are used to document the current state of your teeth, so we can track change over time rather than guessing.
If a splint is appropriate, we take a digital scan or impression, choose the design (hard, soft, or dual-laminate), and the splint is made in a local dental laboratory. A fit and adjustment appointment follows.
Is it painful? The honest answer
The assessment itself is not painful — most of it is looking, photographing and feeling the jaw muscles.
If you already have tender muscles or a sore jaw joint, opening wide for photos can be uncomfortable. We go slowly and use bite blocks where helpful.
Wearing a new splint feels unusual for the first few nights. Most people adapt within one to two weeks.
Night guard vs occlusal splint vs mouthguard — what is the difference?
These terms are often used interchangeably, which can be confusing.
Sports mouthguard: a soft, shock-absorbing appliance worn during contact sport. Not designed to manage grinding and not suitable as a night guard.
Night guard: a broad term for any appliance worn at night to put a physical barrier between the upper and lower teeth. Often a soft or dual-laminate design.
Occlusal splint: a precisely adjusted, hard acrylic appliance designed to distribute biting forces evenly and, in some designs, to support the jaw joint. Usually preferred for moderate to heavy grinders and people with jaw joint symptoms.
For long-term bruxism, a hard occlusal splint made from a laboratory impression and adjusted on your bite is generally more durable and predictable than a soft, off-the-shelf guard.
Treatment: a decision framework
A splint is a protective device — it treats the damage, not the cause. The right plan usually combines a few things:
- A well-fitted occlusal splint to absorb load and protect enamel, fillings, crowns and veneers.
- Stress and sleep hygiene strategies — reducing late caffeine and alcohol, regular sleep times, and, where relevant, psychological support or cognitive behavioural therapy.
- Medical review if snoring, witnessed apnoeas or refreshing-sleep issues suggest a sleep-breathing problem. Treating the airway can reduce grinding.
- Restorative care where teeth are already cracked or worn through. Crowns, onlays or bonding may be needed to rebuild protection, ideally under the cover of a splint afterwards.
Over-the-counter "boil-and-bite" guards are a reasonable short-term option if you are waiting to be seen, but they tend to be bulky, wear through quickly and can alter your bite if worn long term.
Typical Sydney cost ranges
Fees vary by clinic, splint design and laboratory. Referencing the ADA NSW dental fee survey and comparable Sydney providers, typical ranges are:
- Custom hard occlusal splint (laboratory-made): around $400 to $900.
- Soft or dual-laminate night guard: around $300 to $650.
- Chemist boil-and-bite guards: around $20 to $60 — a short-term compromise.
- Assessment and examination: a standard dental check-up fee, which many health funds partially cover.
Private health funds with general or major extras commonly rebate a portion of custom splint fees under ADA item 963 or similar. Your out-of-pocket cost depends on your fund, policy limits and annual cap.
Costs vary by individual case — this is general information, not a quote.
Aftercare and getting the most from your splint
A custom splint should feel snug but not painful. Expect a short settling-in period of extra saliva and mild muscle fatigue as your jaw adapts.
Clean it with a soft toothbrush and cool water each morning, and store it dry in its case. Hot water can warp the acrylic.
Bring it to every routine check-up so we can inspect it for wear, adjust the bite if your teeth have shifted, and track whether the grinding pattern is improving.
With reasonable care, a well-made hard splint commonly lasts three to five years. Heavy grinders may wear through one sooner — which is useful information, because it tells us how much force your teeth would otherwise be taking.
The Lumi Dental experience
Lumi Dental is a modern general and cosmetic practice inside Melrose Park Central in Melrose Park NSW 2114, serving patients from Meadowbank, Ryde, Ermington, West Ryde, Denistone and the wider Sydney area.
For teeth grinding, we take a measured approach — confirm the diagnosis, rule out overlapping causes such as jaw joint disorders or sleep-breathing issues, and then fit a splint that suits your bite rather than a generic appliance.
We also work closely with your GP or sleep physician when an airway or medical factor needs input.
Frequently asked questions
How do I know if I grind my teeth at night?
Look for morning jaw stiffness, headaches that fade during the day, tooth sensitivity or flattened front teeth. A partner hearing grinding sounds is one of the most reliable clues. A dental examination can confirm the wear pattern.
Will a night guard stop me from grinding?
A splint does not usually stop the grinding action itself — it protects your teeth and redistributes the load so that less damage happens. In some patients, muscle activity also reduces over time.
Can I just buy a mouthguard from the chemist?
You can, and it is better than nothing in the short term. However, boil-and-bite guards are bulkier, wear out faster and can change your bite if worn for long periods. They are not a long-term substitute for a fitted splint.
Does Medicare or private health cover a night guard?
Medicare does not generally cover routine dental, but private health extras often contribute a rebate under the relevant ADA item number. Gap amounts vary by fund and policy.
Is teeth grinding linked to sleep apnoea?
There is a recognised association between sleep bruxism and obstructive sleep apnoea. If you snore loudly, wake unrefreshed or have witnessed pauses in breathing, it is worth raising this with your GP in parallel with dental treatment.
About the author
Dr James Tran is the principal dentist at Lumi Dental and practises general, cosmetic and restorative dentistry in Melrose Park, Sydney. He has a particular interest in conservative, evidence-based care for patients with tooth wear, cracked teeth and jaw-related symptoms. You can read more about his background and clinical interests at drjamestran.com.au.
About Lumi Dental
Lumi Dental is a modern dental practice at Melrose Park Central, Melrose Park NSW 2114, offering general, cosmetic, orthodontic, implant, emergency and family dentistry, with IV sedation available for nervous patients. The practice welcomes patients from Meadowbank, Ryde, Ermington, West Ryde, Denistone and the broader Sydney area. Learn more at lumi.dental.
If you are concerned about grinding, jaw tension or worn teeth, you are welcome to book an assessment at Lumi Dental. Related reading: why your tooth hurts when you bite, tooth pain at night and how long veneers last.
This article is general information only and is not a substitute for personalised dental advice. Individual diagnosis, treatment options and costs depend on your specific circumstances and should be discussed at a clinical consultation.
