Managing Your Jaw Joint Problem

This guide is for patients with a Temporomandibular Joint (TMJ) disorder called disc displacement without reduction – also known as “closed lock”.

What is Happening?

Disc displacement without reduction is a condition where the small disc inside your jaw joint has slipped forward and is not moving back into place. This can cause:

• Difficulty opening your mouth wide
• Pain or tightness near your ear or jaw
• A “stuck” or “locked” feeling when trying to open fully

The good news? Most people recover without surgery or injections.

Treatment

The recommended treatment is:

• Supported Self‑Management (SSM)
• Jaw Exercises and Physiotherapy

Supported Self‑Management (SSM)

These simple steps, done consistently, help your jaw heal and regain movement.

DO:

• Eat soft foods (soups, mashed vegetables, pasta)
• Cut food into small pieces and chew evenly on both sides
• Use heat packs on the side of your face (10-15 mins, 2-3x daily)
• Gently massage the muscles around your jaw
• Relax your jaw: keep your teeth apart, lips together, breathe through your nose

AVOID:

• Yawning widely or forcing your mouth open
• Chewing gum or tough/crusty foods, your fingernails, packets, pens
• Resting your chin on your hand
• Clenching or grinding your teeth

Jaw Exercises (Physiotherapy)

Do these exercises twice a day, every day, for at least 6-8 weeks. Stretch only to a comfortable limit – never force your mouth open.

1. Tongue-Up Controlled Opening

1. Place your tongue on the roof of your mouth, just behind your front teeth.
2. Slowly open and close your mouth without letting the tongue move.
3. Repeat 10 times.

2. Assisted Opening with Fingers

1. Place two fingers between your upper and lower front teeth.
2. As you improve, try adding a third finger.
3. Hold for 5-10 seconds, repeat 5 times.

3. Side-to-Side Stretch

1. With your mouth slightly open, gently push your lower jaw to one side using your hand.
2. Hold for 5 seconds, then return to the centre.
3. Repeat on the other side, 5 times each way.

4. Self-Massage

1. Find the firm muscles just in front of your ears (the masseter muscles).
2. Use your fingers to apply gentle circular pressure for 2-3 minutes on each side.

What to Expect

• You may feel tightness at first – that’s normal.
• Most people improve over 6 to 12 weeks.
• Do not force your jaw open or push through sharp pain.
• Keep using your jaw gently and normally – don’t stop using it altogether.

When to Seek Further Help

Contact your dentist or GP if:

• You still cannot open your mouth more than 25-30 mm after 6-8 weeks
• Your pain is worsening or spreading
• You’re struggling to eat, speak, or sleep due to your jaw

You may be referred to a specialist clinic if needed.

Summary