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Volume 20 , Issue 4
Fall 2006

Pages 306–316


Oral Behaviors Checklist: Reliability of Performance in Targeted Waking-State Behaviors

Michael R. Markiewicz, BS / Richard Ohrbach, DDS, PhD / W.D. McCall, Jr, PhD


PMID: 17190029

Aims: To assess the consistency of intentional behavioral performance as an index of whether individuals understood the meanings of the behavioral terms of the Oral Behaviors Checklist, which is a self-report scale for identifying and quantifying the frequency of jaw overuse behaviors. Methods: Surface electromyography was used to measure bilaterally the activity of the masseter, temporalis, and suprahyoid muscles (for assessment of oral behaviors) and the biceps muscles (reference task of biceps curl) in 27 temporomandibular disorder (TMD) cases and 27 controls. Subjects were asked to perform (1) biceps curls to lift 5 weights, with explanation, and (2) 10 oral behaviors (eg, “clench,” “yawn”) without explanation. Results: Biceps-curl performance resulted in assignments of excellent or very good for linearity-reliability based on inspection and correlation. Test-retest reliability of the 10 performed oral behaviors generally ranged from 0.6 to 0.98 for all 3 muscle groups, and many tasks had reliability coefficients comparable to those for the biceps curl. Across tasks, elevator muscle reliability of cases was 0.87, compared to 0.75 for controls; group values for opening muscles were similar. Conclusion: Individual subjects performed each task at a high level of consistency. Performance was not appreciably altered by being a TMD case versus a control and was not significantly different from the performance level of a reference task, indicating that each individual understood well the meaning of each oral behavior-related word. J Orofac Pain 2006;20:306–316

Key words: electromyography, oral behaviors, parafunction, reliability, temporomandibular disorders


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