Headaches at the temples. A jaw that clicks, or catches. Pain that’s been blamed on stress for years. Teeth wearing down faster than they should.
Those are the reasons people actually come in. Almost nobody arrives saying they have a temporomandibular disorder, and the first useful thing to say is that TMJ isn’t a diagnosis. It’s a joint, the temporomandibular joint, and everybody has two of them. Saying you have TMJ is a bit like saying you have knee.
TMD, temporomandibular disorder, is the name for things going wrong in that system. That distinction matters more than it sounds, because what gets lumped together as TMJ is at least three different problems with three different answers.
Three problems wearing one name
The research literature splits them the same way we do in the chair:
- Muscle pain (myogenous). The muscles that close your jaw are overloaded and sore. This is the most common version and, encouragingly, the most treatable.
- Joint pain (arthrogenous). The problem is inside the joint itself: a displaced disc, inflammation, or degenerative change in the bone.
- Both at once (mixed). Common, and the reason a single treatment aimed at one of them often disappoints.
Treating the wrong one is why so many people arrive having already tried something that didn’t work.
How we find out which one you have
This is the part worth being specific about, because a real workup is what separates a plan from a guess.
A proper hands-on TMJ exam comes first. We palpate the muscles to find which ones are actually sore, and we test whether the joints can be loaded. Loading the joint means applying pressure through it deliberately to see whether that reproduces your pain. A joint that loads comfortably is telling you something very different from one that doesn’t, and no scan gives you that answer.
3D CBCT imaging shows us the bony architecture of the joint directly, rather than inferring it from the bite.
An MRI, on occasion. CBCT shows bone. When the question is soft tissue, most often the position and condition of the disc, an MRI is what actually answers it. We don’t order one routinely, only when the answer would change the plan.
The trap in the imaging
Here’s something we see constantly, and it’s the reason we don’t diagnose from a scan.
Degenerative joint disease is a common finding on CBCT, including in patients whose joints load comfortably and who have no joint pain at all.
Read that again, because a lot of unnecessary treatment starts by ignoring it. Finding degenerative change on a scan doesn’t establish that the change is causing your symptoms. Joints adapt. Bone remodels. Plenty of people walk around with imaging findings that aren’t hurting them and never will.
If we image your joints and find degenerative change, the next question isn’t what to do about the scan. It’s whether that joint is actually the source of what brought you in. The exam answers that. The scan informs it.
Why the distinction decides everything
Muscle pain and joint pain respond to different things.
Muscle-origin pain often responds well to work aimed at the muscles. Joint-origin problems need a different conversation, sometimes including imaging we wouldn’t otherwise order, and occasionally a referral.
Telling them apart isn’t a formality before treatment. It’s the treatment decision.
Treatment is a ladder, and most people don’t climb far
Once we have a diagnosis, the goal is the simplest thing that solves the problem.
For some patients, hands-on treatment is the entire answer. Buccal massage and physical therapy are enough on their own for a meaningful number of muscle-origin cases. No appliance, nothing to wear, nothing irreversible. Buccal massage has randomized trial evidence behind it specifically for muscle-origin jaw pain, and in our own patients results have ranged from useful temporary relief through to symptoms resolving.
Most commonly, we use orthotic therapy. An orthotic is a custom appliance that does two jobs at once. It lets overloaded muscles calm down, and then, as they do, it lets us find where your joints actually want to rest. Those two things happen in that order for a reason: a jaw held in a guarded position by sore muscles won’t tell you the truth about where the joint is comfortable. You have to quiet the muscles before that question can even be asked.
In our experience an orthotic usually produces significant improvement. What happens next is the part that matters more.
What the orthotic actually tells us
Say it works and you feel substantially better. That’s a good outcome, and it’s also a finding: it usually means your bite isn’t in the right place relative to your joints. The appliance is holding your jaw somewhere your own teeth don’t allow it to sit.
So the next question is whether you can leave it out.
- If you can go without it for longer and longer stretches and the symptoms stay away, that’s the end of the story. A lot of people finish right here.
- If you can’t, meaning symptoms return whenever the orthotic is out, then the bite itself has to be moved closer to where the orthotic has been holding it. In practice that means orthodontics, restorative work, surgery, or some combination of the three.
That’s the point where irreversible treatment finally makes sense. Notice what it took to get there: a diagnosis, a reversible appliance, and a demonstrated response.
You’re not being asked to accept braces or crowns on a theory about your bite. You’re being asked to make permanent a jaw position that has already been shown to work for you.
And if the orthotic doesn’t help, that’s a result too. A patient who doesn’t improve on a well-made orthotic is telling us the problem won’t be solved by managing load, and that surgery or further intervention deserves a serious conversation. Either way the appliance earns its place, because every outcome it produces narrows what’s left.
Being honest about the evidence
The published evidence on splints and occlusal treatment for TMD is genuinely weak, and it’s worth being specific about how weak.
The 2024 Cochrane review of occlusal interventions pulled together 57 trials and 2,846 participants, and judged only one of those studies to be at low risk of bias. Its verdict on every comparison it assessed was very low certainty. It couldn’t establish that a stabilization splint reliably outperforms placebo, physical therapy, or several other treatments.
Singh BP et al. Occlusal interventions for managing temporomandibular disorders. Cochrane Database of Systematic Reviews. 2024;9:CD012850.
So why do we still use orthotics? Because the argument for one was never that it beats everything else in a trial. It’s that it’s reversible, removes no tooth structure, and produces information whichever way it goes. When the evidence can’t tell you which treatment is best, the sane move is to start with the one you can undo.
That’s also why we don’t begin by grinding down teeth, or with crowns or orthodontics aimed at a bite problem nobody has confirmed is the cause. Those aren’t reversible, and they should be the conclusion of a process rather than the opening move in one.
What else is often part of the picture
- Clenching and grinding, which are usually tied to stress or sleep. Worth mentioning even when it feels unrelated to your teeth. It rarely is.
- Daytime clenching, which people underestimate badly. A guard worn at night does nothing for the eight hours you spend braced at a desk.
- How you breathe and swallow. Tongue posture and mouth breathing load the jaw muscles all day long. Myofunctional therapy addresses the habit rather than its consequences.
- Wear on the teeth, which is often the most objective evidence available of what those muscles have been doing. Wear patterns tell a story about force, and sometimes about acid.
When it isn’t us
Some jaw pain isn’t dental. Nerve pain, some headache disorders, and inflammatory joint disease can all present as a sore jaw, and they’re treated by other people. Part of a real workup is being able to say the problem isn’t ours, and to say it early rather than after a course of treatment that was never going to help.
One patient lived with a poor bite and periodontal disease for close to twenty years after a significant bite change from old dental work, and had struggled to find a team willing to take on a problem that size. See how that was finally resolved →
If your jaw hurts and nobody has explained why
That’s the most common story we hear, and it usually means the diagnosis step got skipped. Call 702-734-0776 or tell us what’s going on. More on how we treat TMJ and TMD here.