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Quintessence Publishing: Journals: OFPH
Journal of Oral & Facial Pain and Headache

Edited by Barry J. Sessle, BDS, MDS, BSc, PhD, FRSC

Official Journal of the American Academy of Orofacial Pain,
the European, Asian, and Ibero-Latin Academies of Craniomandibular
Disorders, and the Australian Academy of Orofacial Pain

ISSN 2333-0384 (print) • ISSN 2333-0376 (online)

Fall 1993
Volume 7 , Issue 4

Share Abstract:

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


Pages: 378-385
PMID: 8118441

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.

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