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Joint Disorders (TMD, TMJ)

Your temporomandibular joint is a hinge that connects your jaw to the temporal bones of your skull, which are in front of each ear. It lets you move your jaw up and down and side to side, so you can talk, chew, and yawn.

Problems with your jaw and the muscles in your face that control it are known as temporomandibular disorders (TMD). But you may hear it wrongly called TMJ, after the joint.

What Causes TMD?

We don’t know what causes TMD. Dentists believe symptoms arise from problems with the muscles of your jaw or with the parts of the joint itself.

Injury to your jaw, the joint, or the muscles of your head and neck — like from a heavy blow or whiplash — can lead to TMD. Other causes include:

  • Grinding or clenching your teeth, which puts a lot of pressure on the joint
  • Movement of the soft cushion or disc between the ball and socket of the joint
  • Arthritis in the joint
  • Stress, which can cause you to tighten facial and jaw muscles or clench the teeth

What Are the Symptoms?

TMD often causes severe pain and discomfort. It can be temporary or last many years. It might affect one or both sides of your face. More women than men have it, and it’s most common among people between the ages of 20 and 40.

Common symptoms include:

  • Pain or tenderness in your face, jaw joint area, neck and shoulders, and in or around the ear when you chew, speak, or open your mouth wide
  • Problems when you try to open your mouth wide
  • Jaws that get “stuck” or “lock” in the open- or closed-mouth position
  • Clicking, popping, or grating sounds in the jaw joint when you open or close your mouth or chew. This may or may not be painful.
  • A tired feeling in your face
  • Trouble chewing or a sudden uncomfortable bite — as if the upper and lower teeth are not fitting together properly
  • Swelling on the side of your face
  • You may also have toothaches, headaches, neck aches, dizziness, earaches, hearing problems, upper shoulder pain, and ringing in the ears (tinnitus).

TMJ – Illustration of Temporomandibular Joint

How Is TMD Diagnosed?

Many other conditions cause similar symptoms — like tooth decay, sinus problems, arthritis, or gum disease. To figure out what’s causing yours, the dentist will ask about your health history and conduct a physical exam.

He’ll check your jaw joints for pain or tenderness and listen for clicks, pops, or grating sounds when you move them. He’ll also make sure your jaw works like it should and doesn’t lock when you open or close your mouth. Plus he’ll test your bite and check for problems with your facial muscles.

Your dentist may take full face X-rays so he can view your jaws, temporomandibular joints, and teeth to rule out other problems. He may need to do other tests, like magnetic resonance imaging (MRI) or computer tomography (CT). The MRI can show if the TMJ disc is in the proper position as your jaw moves. A CT scan shows the bony detail of the joint.

You may get referred to an oral surgeon (also called an oral and maxillofacial surgeon) for further care and treatment. This doctor specializes in surgery in and around the entire face, mouth, and jaw area. You may also see an orthodontist to ensure your teeth, muscles, and joints work like they should.

Home Treatments for TMD

There are things you can do on your own to help relieve TMD symptoms. Your doctor may suggest you try some of these remedies together.

Take over-the-counter medications. Nonsteroidal anti-inflammatory drugs (NSAIDs), like naproxen or ibuprofen, can relieve muscle pain and swelling.
Use moist heat or cold packs. Apply an ice pack to the side of your face and temple area for about 10 minutes. Do a few simple jaw stretches (if your dentist or physical therapist OKs them). When you’re done, hold a warm towel or washcloth to the side of your face for about 5 minutes. Perform this routine a few times each day.

Eat soft foods. Add yogurt, mashed potatoes, cottage cheese, soup, scrambled eggs, fish, cooked fruits and vegetables, beans, and grains to your menu. Cut foods into small pieces so you chew less. Skip hard, crunchy foods (like pretzels and raw carrots), chewy foods (like caramels and taffy), and thick or large bites that require you to open wide.

Avoid extreme jaw movements. Keep yawning and chewing (especially gum or ice) to a minimum and don’t yell, sing, or do anything that forces you to open wide.

Don’t rest your chin on your hand. Don’t hold the phone between your shoulder and ear. Practice good posture to reduce neck and facial pain.
Keep your teeth slightly apart as often as you can. This will relieve pressure on your jaw. Put your tongue between your teeth to control clenching or grinding during the day.

Learn relaxation techniques to help loosen up your jaw. Ask your dentist if you need physical therapy or massage. Consider stress reduction therapy as well as biofeedback.

 

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