title: Masticatory muscle silent periods in patients with MPD syndrome before and after treatment.
abstract: Masticatory muscle silent periods were compared in normal subjects and in patients with MPD syndrome before and after a variety of psychological, physiological, and pharmacological forms of therapy. All patients initially showed prolonged silent periods in one or more of the muscles. There was a direct relationship between prolongation and severity of symptoms. The temporalis (90.9%) and masseter (54.5%) were most frequently involved. In almost all instances the silent periods returned to the normal range following treatment.
mesh_terms: D000328:Adult; D004576:Electromyography / Q000295:instrumentation; D005260:Female; D006801:Humans; D008297:Male; D008406:Masseter Muscle / Q000502:physiology; D008410:Masticatory Muscles / Q000502:physiology*; D008875:Middle Aged; D013703:Temporal Muscle / Q000502:physiology; D013706:Temporomandibular Joint Dysfunction Syndrome / Q000503:physiopathology / Q000628:therapy*