title: Reliability and validity of instrumentation used to record nocturnal clenching and/or grinding.
abstract: Nocturnal clenching and grinding can be recorded with a portable electromyograph unit and a standard cassette tape recorder, which registers the clenching episodes on a cassette tape. The information can then be coded by a new instrument, called a Pulse Identifier, that subsequently transfers the data to a polygraph chart recorder. This study evaluated the reliability and validity of the Pulse Identifier when interfaced with other instruments that measure nocturnal clenching/grinding. A known number of clenching incidents over a baseline period of time were evaluated by three "blind" scores. The results demonstrated an interscorer reliability coefficient of 0.99 and a validity coefficient of 0.99.
authors.affiliation: Department of Adult Restorative Dentistry, University of Nebraska Medical Center, College of Dentistry, Lincoln 68583.
authors.forename: J F
authors.initials: JF
authors.lastname: Bowley
authors.forename: J W
authors.initials: JW
authors.lastname: Stockstill
authors.forename: C J
authors.initials: CJ
authors.lastname: Pierce
mesh_terms: D000704:Analysis of Variance; D002012:Bruxism / Q000175:diagnosis*; D003945:Diagnosis, Oral / Q000295:instrumentation*; D004576:Electromyography / Q000295:instrumentation*; D005069:Evaluation Studies as Topic; D006801:Humans; D008410:Masticatory Muscles / Q000503:physiopathology*; D009119:Muscle Contraction; D015203:Reproducibility of Results; D012893:Sleep Wake Disorders / Q000175:diagnosis