Symptom guide
Cannot Open the Mouth Wide
A stiff or locking jaw can come with painful movement, facial pain, and changes in how the teeth meet.
[1][2]The short answer
A mouth that will not open fully can be linked with jaw stiffness, locking, painful joint noises, and pain in the jaw muscles or joint.
[1][2]
What does a limited opening feel like?
What can cause a jaw that will not open wide?
What relief is safe tonight?
How is the cause checked?
There is no single standard test for TMD. Assessment records the pain history and checks the head, neck, face, and jaw for tenderness, sounds, and movement difficulty; X-ray, MRI, or CT imaging may also be used.
[1]What treatment may restore movement?
How can I reduce repeat jaw problems?
When does limited opening need urgent attention?
Urgent assessment is needed if you cannot eat or drink, or if restricted opening comes with severe headaches, scalp tenderness, double vision, or loss of vision.
[2]