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Why Does My Jaw Click When I Open My Mouth?
If your jaw clicks when you open your mouth, chew, yawn, or talk, it can feel unsettling. Many people worry that something is out of place or that the joint is damaged. The good news is that jaw clicking is common, and on its own it does not always mean there is a serious problem.
What matters more is whether the clicking is painful, whether your jaw feels stiff or locked, and whether it is affecting daily activities like eating, speaking, or sleeping.
At Avenue Physio, our physiotherapists have additional training and experience in TMJ, jaw, and neck assessment and treatment. We look at how the jaw, neck, muscles, and movement patterns work together to better understand what is driving your symptoms.
The TMJ Is a Unique Joint
The temporomandibular joint, or TMJ, is one of the most unique joints in the body.
Your jawbone, called the mandible, is the only freely moving bone of the skull. It works through two joints at the same time, one on the right and one on the left, and those joints have to work together every time you open and close your mouth. That means the jaw does not function like a simple hinge. It is a highly coordinated system that depends on both joints moving well together.
Each TMJ also contains a small articular disc. This disc sits between the jawbone and the skull and helps improve fit, absorb load, and guide smooth movement. In a healthy system, the jaw, the disc, and the muscles around the joint move together in a coordinated way.
The Most Common Reason for a Click
One of the most common explanations for jaw clicking is a change in how the disc moves with the joint.
When you first open your mouth, the jaw begins with a rolling movement. As you open wider, it also glides forward. The disc is meant to move with the joint during that process. If the disc sits slightly out of position when the mouth is closed and then moves back into a better position as the jaw opens, a click can happen.
This is often described as disc displacement with reduction.
That sounds technical, but the key message is simple: a click often reflects a change in disc movement, not necessarily damage.
In fact, disc changes are common, even in people who have no jaw pain at all. Many people have clicking, function normally, and do not need treatment.
The Muscles Matter Too
Jaw clicking is not just about the joint itself. The muscles around the jaw are an important part of the picture.
The lateral pterygoid is especially important because of its close relationship to the front of the joint and the disc. This muscle helps control parts of jaw opening and forward movement. If it becomes overactive, irritated, or poorly coordinated, it may affect how the disc and the jaw move together.
Other muscles can also contribute, including the masseter, temporalis, the muscles under the jaw, and the muscles of the neck and upper shoulders.
If these muscles become tense from clenching, grinding, stress, poor sleep, or ongoing irritation, they can change how the jaw moves and how sensitive the area feels.
This is one reason TMJ symptoms are often not caused by one structure alone. They usually involve some combination of:
- disc movement
- joint mechanics
- muscle tension
- clenching or grinding
- neck dysfunction
- posture and upper body tension
- breathing patterns
- overall sensitivity in the area
Jaw Clicking Does Not Always Need Treatment
Some people have a clicking jaw without pain, locking, or difficulty eating and talking. In those cases, the clicking may reflect a change in how the joint and disc are moving, but not necessarily a problem that needs treatment right away.
You may not need physiotherapy right away if:
- the clicking is not painful
- your jaw opens fully
- it does not lock or catch
- eating and talking feel normal
- it is not getting worse over time
In these cases, the clicking may simply be something to monitor.
Another reassuring point is that, in many people, jaw clicking stays fairly stable over time and may even improve. It is much less important than whether the jaw is painful, limited, or affecting daily life.
A noisy jaw is not always a painful or serious jaw.
If the clicking is painful, comes with locking, or starts affecting chewing, talking, headaches, or comfort, that is when it becomes more worth assessing.
Why Some Clicking Becomes Painful
The click itself is not usually the main problem. The environment around the joint is.
Pain is more likely when:
- chewing or clenching load the area more than it can currently tolerate
- the muscles around the jaw become overactive
- poor sleep or stress keeps the system more sensitive
- the neck and jaw are both contributing to tension and irritation
- the joint or surrounding tissues become overloaded
This is why two people can have the same click, but only one has pain.
Why the Neck and Jaw Often Go Together
The jaw does not work in isolation.
The TMJ is closely connected to the muscles and movement of the neck, upper back, tongue, rib cage, and face. People with TMJ symptoms often also have:
- neck pain
- headaches
- facial tension
- upper shoulder tightness
- clenching or grinding habits
This is one reason TMJ issues can feel stubborn. The disc may be part of the story, but the surrounding muscle system, posture, breathing, sleep, and tension patterns are often just as important.
That is also why treatment should not focus only on the jaw joint itself.
When Should You Get It Assessed?
It is worth getting your jaw assessed if:
- clicking is painful
- your jaw feels stuck, catches, or locks
- you cannot open fully or comfortably
- chewing, talking, or yawning is uncomfortable
- you also get headaches, neck pain, or facial tension
- the problem is affecting sleep or daily comfort
- symptoms are not settling
A proper assessment can help determine whether the main driver is the joint, the disc, the muscles, the neck, clenching habits, or a mix of several factors.
How Physiotherapy Can Help
Physiotherapy for TMJ looks at more than whether the jaw clicks.
At Avenue Physio, we assess how the joints, discs, muscles, neck, posture, breathing, and movement patterns are working together. The goal is to understand what is driving your symptoms and build a plan around that.
Treatment may include:
- improving jaw opening and closing mechanics
- reducing tension in the jaw, face, and neck muscles
- helping calm irritated joint structures
- improving neck and upper back mobility
- addressing clenching or grinding habits
- retraining movement and muscle coordination
- guiding exercises to improve control and confidence
- helping you manage flare ups and daily aggravating factors
The goal is not just to make the click quieter. It is to help your jaw work better, feel less sensitive, and become more comfortable with eating, speaking, and daily life.
The Bottom Line
Clicking is common, often harmless, and usually only matters when it becomes painful or limiting.
If your jaw clicks when you open your mouth, you are not alone. Often, it reflects a change in how the discs, joints, and muscles are working together rather than something dangerous.
If the clicking is painful, associated with locking, or comes with headaches, neck pain, or difficulty chewing, it is worth getting assessed.
Need Help With Jaw Clicking or TMJ Pain?
At Avenue Physio, we take a whole-system approach to TMJ care. That means looking at the jaw, the discs, the muscles, the neck, and the movement patterns that may be contributing to your symptoms.
Book your TMJ assessment to get a clear plan and start moving your jaw more comfortably again.
