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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)

Publication:
Summer 1998
Volume 12 , Issue 3

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Clinical Examination Findings of Temporomandibular Disorder Patients: A Factor Analytic Study

Glaros/Glass/Williams

Pages: 193-202
PMID: 9780940

To assess the latent factor structure of clinical examination findings obtained from temporomandibular disorder patients, exploratory factor analysis was used to examine the relationships of a large number of variables obtained from a clinical examination to a smaller number of latent variables, or factors. Two independent samples of patients--an initial sample that consisted for 330 patients who complained of facial pain and a validation sample of 161 additional patients--were examined to determine whether the factor structure was reliable. A principal axis factor analysis with varimax rotation was used for both sets of data. The factor structure for the two samples was consistent between the two sets of data. Results identified two muscle pain factors (an intraoral muscle factor an an extraoral muscle factor), two unilateral jaw pain factors, and two factors that concern joint noise clicking (clicking and crepitus). The implications of these findings for the current nosologic systems for temporomandibular disorders are discussed.

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