That clicking, locking, aching jaw might be more treatable than you think – and your dentist is often the best place to start
It starts subtly. A click when you open your mouth wide. A dull ache along the jawline after a long day. Difficulty biting into an apple without a twinge of discomfort. You assume it’s stress, or that you slept oddly, or that it’ll sort itself out. For some people, it does. For many others, it gradually worsens – progressing from occasional annoyance to chronic pain that affects eating, sleeping, concentration, and quality of life.
Temporomandibular joint disorder – commonly called TMJ or TMD – is one of the most prevalent yet poorly understood conditions in oral health. It affects an estimated 10 to 15 per cent of the adult population at any given time, with women disproportionately affected. Despite its prevalence, many sufferers go years without diagnosis, cycling through GPs, physiotherapists, and even emergency departments without ever being directed to the clinician best equipped to assess and manage the condition: a dentist.
At Core Dental, we see TMJ patients across our nine Melbourne locations who have often been living with jaw pain, headaches, and restricted movement for months or years. The relief they express when they finally get a clear diagnosis and a treatment plan is one of the most rewarding parts of our work.
Understanding the Temporomandibular Joint
To understand what goes wrong with the TMJ, it helps to appreciate what an extraordinary joint it is. You have two temporomandibular joints – one on each side of your face, just in front of your ears. They connect your lower jaw (mandible) to the temporal bone of your skull and are the only joints in the body that must work in perfect synchronisation. Every time you chew, speak, yawn, or swallow, both TMJs move together.
The joint itself is a complex assembly of bone, cartilage, muscles, ligaments, and a small disc of fibrocartilage called the articular disc. This disc sits between the condyle (the rounded top of the mandible) and the temporal bone, acting as a cushion and allowing smooth, gliding movement. When everything works as it should, you don’t think about your TMJ at all. When something goes wrong – with the disc, the muscles, the joint surfaces, or the alignment of the bite – the result can range from mild inconvenience to debilitating pain.
Recognising TMJ Disorder: Signs and Symptoms
TMJ disorder doesn’t always present in obvious ways. Many patients don’t initially connect their symptoms to a jaw joint problem. Here’s what to watch for:
- Jaw pain or tenderness, particularly around the joint itself (in front of the ear) or in the muscles of mastication (the masseter, temporalis, and pterygoid muscles that power chewing)
- Clicking, popping, or grating sounds when opening or closing the mouth – these indicate the articular disc has shifted from its normal position
- Locking of the jaw, either in the open or closed position – this occurs when the displaced disc physically blocks normal joint movement
- Limited opening range – a healthy adult can typically open their mouth 40 to 55mm (roughly three finger-widths); TMJ patients often struggle to reach 30mm
- Pain when chewing, especially harder or chewy foods
- Headaches, particularly in the temple region – often misdiagnosed as tension headaches or migraines
- Ear symptoms including earache, a feeling of fullness, or tinnitus (ringing) – the TMJ sits immediately adjacent to the ear canal, and referred pain is common
- Neck and shoulder pain from compensatory muscle tension
- Tooth pain that doesn’t correspond to any visible dental problem – the trigeminal nerve that serves the TMJ also serves the teeth, and referred pain between the two is well documented
- Changes in bite – a feeling that your teeth don’t fit together properly
If you’re experiencing several of these symptoms simultaneously, TMJ disorder is a strong possibility.
What Causes TMJ Problems?
TMJ disorder is rarely caused by a single factor. It’s typically multifactorial – a combination of contributing elements that together overwhelm the joint’s capacity to function normally.
Bruxism (teeth grinding and clenching)
This is probably the most significant modifiable risk factor. Bruxism, particularly nocturnal bruxism (grinding during sleep), places enormous forces on the TMJ – far greater than normal chewing loads. Many people are completely unaware they brux until a dentist identifies the telltale signs: worn tooth surfaces, fracture lines in enamel, scalloping of the tongue, and hypertrophy (enlargement) of the masseter muscles.
Malocclusion and bite instability
When the teeth don’t meet in a stable, balanced relationship, the TMJ compensates. Over time, this compensation stresses the joint structures. Missing teeth, poorly fitting dental work, and skeletal discrepancies between the upper and lower jaw all contribute.
Stress and anxiety
Psychological stress drives muscle tension, and the muscles of mastication are particularly susceptible. Clenching during the day (often unconscious, associated with concentration or emotional tension) is increasingly recognised as a significant factor in TMJ disorder. The connection between stress and jaw pain is not merely anecdotal – it’s well supported by research.
Trauma
A blow to the jaw, whiplash injury, or even prolonged wide opening during dental treatment can damage the joint structures or displace the articular disc. Symptoms may appear immediately or develop gradually over weeks to months following the injury.
Arthritis
Both osteoarthritis (degenerative) and rheumatoid arthritis (autoimmune) can affect the TMJ, causing inflammation, cartilage breakdown, and changes to the joint surfaces.
Disc displacement
The articular disc can shift forward, sideways, or medially from its normal position. In many cases, it “recaptures” during opening (producing a click), but in others it remains permanently displaced (a condition called “closed lock”), physically restricting movement.
How We Assess TMJ Disorder at Core Dental
Accurate diagnosis is the foundation of effective treatment, and TMJ disorder requires more than a cursory “open and close” check. At Core Dental, our assessment includes:
Detailed history
When did symptoms start? What makes them better or worse? Are there associated headaches, ear symptoms, or neck pain? What’s your stress level? Do you know if you grind your teeth? Have you had recent dental work or trauma? These questions help us build a picture of the likely contributing factors.
Clinical examination
We palpate (feel) the TMJ on both sides during opening, closing, and lateral movements, checking for clicks, crepitus (grating), tenderness, and asymmetry. We assess the muscles of mastication for tenderness and trigger points. We measure your maximum opening, lateral excursion (side-to-side movement), and protrusion.
Bite analysis
We examine how your teeth come together in various positions – maximum intercuspation (full bite), protrusive (jaw forward), and lateral (jaw to each side). We’re looking for premature contacts, interferences, and instability that may be contributing to joint stress.
Imaging
Our digital OPG provides a screening view of both joints, while 3D CBCT imaging – available at all Core Dental locations – gives us a detailed three-dimensional view of the bony anatomy of the condyle, fossa, and articular eminence. This is particularly valuable for identifying degenerative changes, condylar asymmetry, or bony pathology.
Tooth wear assessment
We document patterns of tooth wear that indicate bruxism – the location, extent, and nature of the wear tells us a great deal about the forces acting on the teeth and joints.
Treatment Options: Conservative First
A principle that guides TMJ treatment at Core Dental is conservative management first. The vast majority of TMJ disorder responds well to non-invasive treatment, and we always exhaust conservative options before considering more invasive approaches.
Occlusal splint therapy
This is often the cornerstone of TMJ treatment. A custom-fabricated splint (sometimes called a night guard or occlusal appliance) is worn over the teeth – typically the upper arch – to create a stable, balanced bite surface. This achieves several things simultaneously: it reduces the load on the TMJ by providing an even distribution of forces, it protects the teeth from bruxism damage, and it can help the jaw muscles relax by eliminating bite interferences.
At Core Dental, splints are fabricated by our in-house Smile Lab, where our ceramists and technicians use digital scans to create a precisely fitting appliance. Because the dentist can communicate directly with the technician – literally walking the case into the lab – the result is a level of accuracy and comfort that outsourced laboratory work struggles to match. Splints typically need adjustment over the first few weeks as the muscles and joint adapt.
Muscle relaxation and physiotherapy
We often recommend specific jaw exercises, stretches, and postural modifications. Heat packs applied to the masseter and temporalis muscles can provide significant relief. For patients with severe muscle spasm, we may suggest physiotherapy with a practitioner experienced in TMJ rehabilitation – the techniques overlap with general musculoskeletal physiotherapy but require specific knowledge of the masticatory system.
Behavioural modification
Awareness is powerful. Many patients clench during the day without realising it – while driving, working at a computer, or during stressful conversations. Simply becoming conscious of the habit and actively practising “lips together, teeth apart” (the natural resting position of the jaw) can meaningfully reduce symptoms.
Dietary modification
During acute flare-ups, switching to softer foods reduces the mechanical load on the joint and allows inflamed structures to settle. This doesn’t mean a permanent dietary restriction – it’s a temporary measure during the treatment phase.
Pharmacological management
Short-term use of anti-inflammatory medication (ibuprofen or naproxen) can help manage acute pain and inflammation. Muscle relaxants may be prescribed for severe muscle spasm. These are adjuncts to other treatment, not standalone solutions.
Occlusal equilibration
In some cases, selective reshaping of tooth surfaces to eliminate bite interferences and create a more harmonious occlusion can reduce TMJ stress. This is a precise, conservative procedure – we’re talking about adjustments measured in fractions of a millimetre – but it requires careful analysis and should only be performed after splint therapy has established a stable, comfortable jaw position.
When Specialist Referral Is Appropriate
Most TMJ patients respond well to the conservative measures described above. But some cases are more complex and benefit from specialist input:
- Persistent symptoms despite consistent conservative treatment over three to six months
- Severe disc displacement with locking that doesn’t respond to splint therapy and exercises
- Degenerative joint disease visible on imaging, with progressive bone changes
- Significant skeletal discrepancy contributing to bite instability – these may require orthodontic or orthognathic (surgical) correction
- Suspected internal derangement where MRI imaging would help clarify the disc position and joint pathology
Through Core Dental’s referral pathway to the Collins Street Specialist Centre, patients can access AHPRA-registered specialists including Specialist Prosthodontists (who have advanced training in occlusion and bite rehabilitation), Oral and Maxillofacial Surgeons (for surgical cases), and Specialist Orthodontists (for bite correction). This pathway means you’re not left searching for a specialist on your own – we coordinate the referral and ensure your records, imaging, and treatment history transfer seamlessly.
Living with TMJ: Long-Term Management
TMJ disorder is often a chronic condition that benefits from ongoing management rather than a one-time cure. The good news is that most patients achieve significant symptom relief and can maintain comfortable function long-term with a combination of splint therapy, awareness, and regular dental monitoring.
Key principles for long-term management include:
- Consistent splint wear as recommended by your dentist – this typically means every night, but your dentist may advise daytime wear during stressful periods
- Stress management – yoga, meditation, exercise, and adequate sleep all reduce muscle tension
- Regular dental check-ups to monitor bite stability, tooth wear progression, and splint condition
- Prompt attention to changes – if symptoms flare or new symptoms appear, don’t wait months to seek assessment
- Maintaining good posture – forward head posture places additional strain on the neck and jaw muscles, and is increasingly common in our screen-focused lives
Core Dental’s Melbourne-Wide Network for TMJ Care
TMJ disorder doesn’t respect suburb boundaries, and neither does our care. With nine locations across Melbourne – Caroline Springs, Carrum Downs, Southbank, South Melbourne, Epping, Wyndham, Berwick, Bayside, and Glenferrie – Core Dental makes comprehensive TMJ assessment accessible regardless of where you live or work.
Our CareStack integrated records system means your diagnostic findings, imaging, splint specifications, and treatment progress are accessible at any location. Start your assessment in Southbank near your office, have your splint adjusted in Berwick near home – it’s seamless.
Core Dental has been family-owned since 1993 – over 34 years of independent operation with no corporate shareholders and no private equity. Treatment decisions are made by clinicians, for patients, based on evidence. When it comes to a condition as nuanced as TMJ disorder, that independence matters.