Reliability and validity of instrumentation used to record nocturnal clenching and/or grinding

• Autores: John Bowley, John W. Stockstill, Calvin J. Pierce
• Localización: Journal of Oral & Facial Pain and Headache, ISSN-e 2333-0376, ISSN 2333-0384, Vol. 7, Nº. 4, 1993, págs. 378-385
• Idioma: inglés
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• Resumen

  • 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 lind scores. The results demonstrated an interscorer reliability coefficient of 0.99 and a validity coefficient of 0.99.