Source:http://linkedlifedata.com/resource/umls/id/C0006325
MSH: A disorder characterized by grinding and clenching of the teeth.,CSP: oral habit involving involuntary rhythmic or spasmodic nonfunctional gnashing, grinding and clenching of teeth, usually during sleep.,NCI: An involuntary or unconscious clenching or grinding the teeth, typically during sleep. (from WordNet)