Abstract
Temporomandibular joint radiographs and electromyographic data for normal persons and patients with myofascial pain-dysfunction syndrome were compared to determine diagnostic reliability. Temporomandibular joint radiographs and electromyographic data for 22 study participants, some of whom had myofascial pain-dysfunction syndrome, were compared for diagnostic reliability. On the radiographs, measurements were made to establish the condylar symmetry of anterior and posterior joint spaces; on the electromyograms, the duration of the silent period that follows the jaw jerk reflex was measured. Eleven patients with myofascial pain-dysfunction syndrome had abnormally long silent periods and asymmetric joint spaces; two others with the condition had abnormally long silent periods, but had symmetric joint spaces. Measurement of the silent period is more reliable diagnostically than radiographs of the temporomandibular joints.
Published Version
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