The temporomandibular joint (TMJ) may be affected in a patient with scleroderma.

Signs and symptoms of TMJ involvement:

(1) masticatory muscle pain on chewing

(2) difficulty in opening the mouth (which may also be affected by skin sclerosis)

(3) headaches


Dysfunction of the temporomandibular joint:

(1) restricted range of motion (pseudoankylosis)

(2) reduced lateral excursion to the left and/or right

(3) reduced protrusion of the mandible


Mandibular bone resorption may be observed on radiographs.

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