Muscle spasm (cramp).
An inability to open the mouth due to muscle spasms, injury, a formation of scar tissues in the muscles of the jaws, or a bony union (ankylosis) in the temporomandibular joint - jaw joint.
prolonged spasm of the jaw muscles
Inability to open the mouth fully due to muscle spasm.
Sustained spasm of the muscles in the jaw.
a sustained spasm of the jaw muscles.
An inability to open the mouth completely. It can be caused by muscle, nerve or joint damage or inflammation.