Normal TMJ Anatomy:

The TMJ can move in all directions- up and down, and side-to-side, making it a very unique joint in the body. There is a disc of cartilage between the jaw bone and the skull which is responsible for protecting the joint and allows smooth movement of the jaw.

Grayscale diagram of a healthy temporomandibular joint shown in two views labeled "Jaw closed" and "Jaw open." The cartilage disc sits between the rounded jaw bone (condyle) and the skull; when the jaw opens, the condyle and disc glide forward together, keeping the joint cushioned.

Grayscale diagram of TMJ disc displacement, arranged as four views in two rows labeled "Clicking" and "Locking," each showing the jaw closed and open. Dotted outlines show the cartilage disc slipped forward, ahead of the jaw bone (condyle), instead of cushioning it.

Disc Displacement:

The tissues inside the jaw joint can become injured or displaced which can lead to joint sounds (clicking and popping), pain with movement of the jaw, or lack of mobility with the jaw (locking).

TMJ Arthritis:

The bone and soft tissues of the joint can also degrade so that the bone of the jaw and skull create a grinding or crunching sound. This can occur in older individuals but may also be present in those with more systemic conditions such as rheumatoid arthritis.

Grayscale diagram labeled "Normal," showing the temporomandibular joint with the jaw closed and open, the cartilage disc positioned between the jaw bone and skull.

Grayscale side-view illustration of a human skull with the jaw muscles visible, with labeled arrows pointing to the Temporalis Muscle, Cartilage Disc "cushion," TMJ (temporomandibular joint), Masseter Muscle, and Mandible (jaw).

Muscle Pain:

There are several muscles that move the jaw to allow for chewing, speaking, and other jaw movements. There are also muscles in the head and neck that function to support jaw movement. Like all muscles, the jaw muscles can become painful, tense, and tired from overuse or from bracing when there is a jaw joint issue. This muscle pain can also lead to headaches, especially tension headaches in the temples.

Trigger Points

Trigger points are hyper-tensed muscles (aka muscle knots) that cause jaw aches and pains. Trigger points form as result of repetitive activity.

Grayscale medical illustration in two labeled groups, "Masseter" and "Temporalis," each containing four profile drawings of a head (A–D). An X marks the trigger point within the muscle, and shaded areas show the referred pain pattern — over the cheek, jaw, and teeth for the masseter, and over the temple, eyebrow, and upper teeth for the temporalis.

Grayscale side-view illustration of a human skull with the jaw muscles labeled: Temporalis Muscle, Cartilage Disc "cushion," TMJ (temporomandibular joint), Masseter Muscle, and Mandible (jaw).

TMJ Headache:

TMJ headache is head pain resulting from the pain that is first caused by tensing up of the jaw muscles then spreading to the TMJ muscles along the side of your cheeks and then reaching to the top of your head, ultimately causing a TMJ headache. TMJ Headaches can be common and sometimes are a direct result of TMJ dysfunction.

What does a TMJ Headache Feel Like?

  • The typical TMJ headache is a tight, dull aching headache over the temple region. It is most commonly on one side, which correlates to your jaw joint issue. But, it can also be bilateral.
  • TMJ headache aggravates with jaw tension, clenching, stress or jaw movement. Typically, it relaxes your jaw. It also is usually associated with tenderness of the jaw and nearby muscles.

What causes TMJ Headaches?

TMJ dysfunction may increase muscle tension in the jaw and masticatory muscles. e.g. temporalis, pterygoids. TMJ headaches are associate with jaw disorders. Abnormal jaw muscle tension can create TMJ disorders such as myotonic or articular disc derangements.

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