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Reliability and Validity of Instrumentation Used to Record Nocturnal Clenching and/or Grinding
1Departmenl of Adult Restorative Dentistry, University of Nebraska Medical Center, College of Dentistry, 40th & Holdrege, Lincoln, Nebraska 68583-0740
2University of Pittsburgh Schooi of Déniai Medicine, Pittsburgh, Pennsylvania
*Corresponding Author(s): John F. Bowley E-mail:
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.
John F. Bowley,John W. Stockstill,Calvin J. Pierce. Reliability and Validity of Instrumentation Used to Record Nocturnal Clenching and/or Grinding. Journal of Oral & Facial Pain and Headache. 1993. 7(4);378-385.
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