TMJ and Jaw Clicking: What the Sounds Mean and When to Worry
The Sound That Makes People Stop Mid-Conversation
Most people who develop jaw clicking notice it suddenly — a pop or click when they open wide, a grating sensation when they chew, or a soft thud when the jaw closes. Sometimes a partner hears it before the patient does. Sometimes it has been present for years before anyone thinks to mention it.
Jaw sounds are one of the most common reasons patients seek assessment at Dr Gray Dentistry in Durban. And one of the first things Dr Gray explains is that not all jaw sounds are the same — they have different causes, different clinical significance, and different implications for treatment.
Understanding what the sounds in your jaw actually mean is the first step toward knowing whether you need treatment, monitoring, or simply reassurance.
Why Does the Jaw Make Sounds at All?
The temporomandibular joint is a complex structure — it combines a hinge movement with a sliding movement in a way that no other joint in the body does. Inside the joint, a small cartilage disc sits between the ball of the lower jaw and the socket of the skull, cushioning the joint and allowing smooth, coordinated movement.
When everything is working correctly, the jaw moves silently. Sounds occur when something disrupts the normal relationship between the disc, the ball, and the socket — or when the joint surfaces themselves are altered by wear or inflammation. The nature of the sound — its timing, quality, and whether it is accompanied by pain — provides important clinical information about what is happening inside the joint.
The Different Types of Jaw Sounds
Clicking or popping A clear, distinct click or pop during jaw opening or closing is the most common jaw sound associated with TMJ disorder. It typically indicates disc displacement with reduction — a condition where the cartilage disc has moved slightly out of its normal position but snaps back into place as the mouth opens.
The click is the sound of the ball of the jaw moving over the rim of the displaced disc and then snapping back underneath it. It occurs at a predictable point in the opening or closing movement — often at a specific degree of mouth opening that remains consistent from day to day.
A reciprocal click — where there is a click both on opening and on closing — is a classic sign of this pattern. The opening click occurs as the jaw slides over the displaced disc. The closing click occurs as the disc slips back out of position when the mouth closes.
Popping without pain Many people have jaw clicking that has been present for years without progression, pain, or functional limitation. This is not uncommon and does not always require active treatment — but it does warrant assessment and monitoring to ensure it is not progressing toward more significant joint dysfunction.
Crepitus — grinding or grating A grinding, grating, or crackling sound — often described as sand in the joint — is a different and generally more significant finding than a clean click. Crepitus indicates roughening or irregularity of the joint surfaces themselves, typically associated with degenerative joint disease or osteoarthritic changes in the TMJ.
Unlike disc displacement clicking, crepitus is not a discrete pop — it is a continuous, diffuse sound that occurs throughout the range of jaw movement. It reflects actual changes to the bony and cartilaginous surfaces of the joint rather than disc position, and it warrants thorough assessment and imaging to understand its extent.
Thudding or clunking A heavy, dull thud during jaw opening — often accompanied by a noticeable deviation of the jaw to one side — can indicate a more significant disc displacement where the disc is less mobile. The jaw is physically working its way over a larger obstacle before it can open fully, producing a clunkier, more forceful sound than a simple click.
Cracking without movement Some patients describe a cracking or popping sensation that occurs without any specific jaw movement — sometimes during yawning, sometimes apparently spontaneously. This can reflect joint laxity, where the ligaments supporting the joint are looser than normal, allowing the joint to move slightly out of position and then return — producing a sound similar to knuckle cracking.
Disc Displacement: What Is Actually Happening
Because disc displacement is the most common cause of jaw clicking, it is worth understanding in a little more detail.
The TMJ disc is held in position by a network of ligaments and attached to a muscle — the superior lateral pterygoid — that controls its movement during jaw opening. When these ligaments become stretched or damaged — through grinding forces, injury, bite imbalance, or cumulative overloading — the disc can migrate forward and medially out of its normal position.
In the early stages, this displacement is only partial — the disc is out of position when the jaw is closed but snaps back into its correct position as the jaw opens. This is disc displacement with reduction, and it produces the characteristic click described above.
Over time, if the displacement is not addressed, the disc can become permanently displaced — folding, deforming, and adhering in its incorrect position. At this stage the click typically disappears — not because the joint has improved, but because the disc is no longer mobile enough to snap back. The jaw may become limited in opening, deviate significantly to one side, and feel stiff and restricted. This is disc displacement without reduction — a more advanced and clinically significant presentation.
The progression from clicking to locking is not inevitable — many patients with disc displacement clicking never progress to permanent displacement. But it is a reason to have clicking assessed rather than ignored, particularly if it is accompanied by pain, limitation, or a pattern of worsening.
When Jaw Clicking Is Not a Concern
Not all jaw clicking requires active treatment. Dr Gray assesses each patient individually, and in many cases the finding is one of monitoring rather than immediate intervention.
Clicking that is unlikely to require immediate treatment typically has these characteristics:
It has been present and stable for a long time without progression
It occurs without pain or discomfort
It does not limit mouth opening or jaw movement
It does not interfere with eating, speaking, or daily function
There are no other TMJ symptoms accompanying it
In these cases, Dr Gray will document the finding, explain what it means, and monitor it at regular intervals — intervening if the picture changes.
When Jaw Clicking Warrants Assessment and Treatment
Clicking that warrants prompt assessment and likely treatment includes:
Clicking that is accompanied by pain — either at the joint, in the ear, or referred to the temple, teeth, or neck
Clicking that has changed in character — become louder, more frequent, or shifted in timing
Clicking accompanied by limited mouth opening or jaw deviation
Clicking that has recently appeared following a dental procedure, injury, or period of high stress
Clicking accompanied by jaw locking — even temporarily
Clicking that has progressed from one side to both sides
Any clicking in a child or teenager — jaw sounds during the growth years warrant earlier assessment given the implications for jaw development
Can Jaw Clicking Be Treated?
Yes — and the approach depends on what is causing the sound and what stage the disc displacement has reached.
For disc displacement with reduction — early stage The goal is to reduce the load on the joint that is driving the displacement, allow the stretched ligaments to recover where possible, and prevent progression to permanent displacement. This typically involves a custom occlusal splint worn at night to reduce grinding forces on the joint, bite assessment and adjustment where a bite imbalance is contributing, trigger point treatment where muscle tension is pulling the disc out of position, and lifestyle modifications to reduce jaw loading.
Some practitioners use an anterior repositioning splint — a device that holds the jaw slightly forward to keep the disc in its correct position during sleep — in selected cases where reduction of the disc is achievable and appropriate. Dr Gray assesses each case individually to determine whether this approach is suitable.
For disc displacement without reduction — advanced stage Where the disc is permanently displaced, treatment focuses on managing symptoms, reducing inflammation, and helping the joint adapt to its new configuration rather than attempting to restore the original disc position — which is rarely achievable at this stage without surgical intervention. Conservative treatment produces good outcomes for the majority of these patients over time.
For crepitus and degenerative joint disease Treatment focuses on reducing the inflammatory load on the joint, protecting remaining joint surfaces, and managing pain — through splint therapy, anti-inflammatory measures, dietary changes, and where appropriate, referral for specialist assessment.
Don't Ignore Jaw Sounds
The most important message about jaw clicking is this: it is not something to dismiss as harmless background noise without assessment. Some clicking is genuinely benign and requires only monitoring. Other clicking represents an early warning sign of progressive joint dysfunction that is far easier to manage at this stage than once it has advanced.
A single assessment appointment with Dr Gray is enough to determine which category your jaw sounds fall into — and to give you a clear, honest picture of what is happening and what, if anything, needs to be done about it.
Have Your Jaw Sounds Assessed at Dr Gray Dentistry, Durban
If you have jaw clicking, popping, crepitus, or any other jaw sound — with or without pain — Dr Gray at Dr Gray Dentistry in Durban, South Africa can assess what is causing it, what it means for your jaw health, and whether treatment or monitoring is the right approach for your specific presentation.
Book your jaw assessment at Dr Gray Dentistry in Durban today.