Why Does My Jaw Click or Pop When I Open My Mouth?

Jaw clicking or popping when you open your mouth usually comes from the small cartilage disc inside your TMJ slipping slightly out of position and then snapping back, called disc displacement with reduction. This displacement is often driven by uneven pull from the jaw muscles, particularly the lateral pterygoid, which attaches directly to the disc and can pull it off-center when overactive from clenching or postural strain.

If the click happens consistently but doesn't hurt, that's genuinely common and usually not urgent. If it's started to come with discomfort, or you've noticed your jaw moving differently than it used to, that's worth understanding as a real, specific mechanism rather than just an odd noise.

Why the Disc Slips, and Why It Snaps Back

Inside your temporomandibular joint sits a small disc of cartilage that normally cushions the movement between your jawbone and skull. When this disc sits slightly out of its normal position, opening your mouth can force it to snap back into place partway through the movement, producing the click or pop you're hearing. This is called disc displacement with reduction, meaning the disc does eventually return to a more normal position as you open, which is why the sound doesn't necessarily come with pain or restricted movement.

What causes the disc to slip in the first place usually traces back to the muscles controlling your jaw. The lateral pterygoid muscle attaches directly to the disc, and when it becomes overactive or pulls unevenly, often from clenching, teeth grinding, or forward head posture, it can pull the disc slightly off its normal track. Addressing the click effectively means addressing why that muscle is pulling unevenly, not just the joint noise itself.

When It's Something More Serious

Painless clicking that occurs consistently, without locking or restricted movement, is common and generally not a cause for concern. Get evaluated if clicking is accompanied by pain, if your jaw locks or has difficulty opening fully, if you notice your bite has changed, or if the click is accompanied by fever or swelling, which could indicate an infection requiring different care entirely.

How This Gets Addressed

Because the disc's position is driven by the muscles pulling on it, addressing this well means correcting that muscular imbalance directly rather than only monitoring the joint sound.

A TMJ Therapy session addresses this from several angles in one visit. Manual therapy releases restriction in the joint capsule and surrounding tissue, restoring more normal disc mobility. Dry needling, using a jaw-safe technique specifically trained for this area, directly targets the lateral pterygoid and other overactive jaw muscles pulling the disc off-center, one of the more precise ways to reach this particular muscle. Postural retraining addresses forward head posture and shoulder mechanics that load the jaw joint and can contribute to the muscular imbalance in the first place. Neuromuscular retraining, including red light therapy, supports tissue healing and helps reduce inflammation in the joint itself. Patient education rounds out the visit, addressing clenching habits, sleep position, and other daily contributors that keep the pattern going.

You can learn more about our full approach to TMJ therapy here.

Most patients notice a real reduction in clicking, along with improved comfort, once the underlying muscular pull on the disc is directly addressed rather than the joint sound being treated as something to simply live with.

Written By:

Dinell Jacobson

Physical Therapist, TMJ Specialist

Frequently Asked Questions

Is painless jaw clicking something I need to treat? 

Not urgently, if it's truly painless and not accompanied by locking or restricted movement. That said, addressing the underlying muscular imbalance can prevent it from progressing and often improves overall jaw comfort even without significant pain currently present.

Will this turn into locking if I don't get it treated? 

It can, for some patients. Disc displacement with reduction, where the disc clicks back into place, can progress over time in some cases to disc displacement without reduction, where the disc no longer returns to position and the jaw locks. This isn't universal, but it's a reasonable reason to address the underlying pattern rather than ignore it indefinitely.

Can a splint or night guard fix the clicking on its own? 

A splint can protect your teeth and reduce some strain, but it doesn't address the muscular imbalance actually pulling the disc off-center. This is a major reason many patients continue experiencing clicking, and sometimes pain, even after wearing a splint consistently for months.