Bruxism Research Today is a free monthly online journal that collates and summarizes the latest research about Bruxism, including details on grinding teeth, sleep, headaches, treatment.

A comparison of jaw-closing and jaw-opening idiopathic oromandibular dystonia.

Singer C, Papapetropoulos S

Miller School of Medicine, Department of Neurology University of Miami, 1501 NW 9th Avenue (NPF), Room 4004, Miami, FL 33136, USA. csinger@med.miami.edu

Oromandibular dystonia (OMD) is a form of focal dystonia that affects masticatory, lower facial, and lingual muscles. We compared the clinical variables and response to treatment between patients with idiopathic jaw-closure C-OMD (n = 11) and jaw-opening dystonia O-OMD (n = 12) seen in our Movement Disorders clinic over the last 10 years. The co-existence of dystonia in other regions and sensory tricks were significantly more prevalent in O-OMD (P = 0.049 and 0.03, respectively). Male gender, orobuccolingual dyskinesias (facial grimacing, lip biting, tongue dyskinesias, platysma contractions and bruxism) and better response to botulinum toxin injections were more frequent in C-OMD but remained a trend.

Published 17 February 2006 in Parkinsonism Relat Disord, 12(2): 115-8.
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