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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:
Fall 1997
Volume 11 , Issue 4

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Bilateral Condylar Movement Patterns in Adult Subjects

Kenworthy/Morrish, Jr/Mohn/Miller/Swenson/McNeill

Pages: 328-336
PMID: 9656909

The purpose of this study was to determine if there was a difference between the temporomandibular condylar movement patterns of a symptomatic adult population and those of an asymptomatic adult population. Thirty-five volunteers who were not seeking treatment for TMD underwent two different assessments for TMD signs and symptoms: (1) a self-administered questionnaire and (2) a clinical examination. Based on the information obtained from the questionnaires, subjects were divided into reported-symptomatic and reported-asymptomatic groups. Based on the investigator’s clinical evaluation of the same subjects, subjects were divided into clinically symptomatic and clinically asymptomatic groups. To compare condylar movement patterns, both groups of subjects then had their mandibular border condylar movements measured bilaterally using a sagittal recording device during maximum opening, maximum protursion, and maximum left and right excursion movements. The patterns were separated into two broad groups, symmetric and asymmetic. Symmetric gliding movements were defined as uninterrupted bilaterally mirror-like patterns of each donyle with a difference between left and right total length excursion not exceeding 2 mm during opening in the sagittal plane or horizontal plane. Our results show that 63% of the subjects who reported clinically asymptomatic for TMD demonstrated asymmetric condylar movements. However, 100% of the patients (n = 5) who reported clinically symptomatic for TMD exhibited asymmetric condylar movements. This finding suggests that, while a very high percentage of TMD subjects will have asymmetric condylar movements, condylar movements alone are not necessarily diagnostic of TMD, and the sagittal recording device may alert the clinician to abnormal movements.

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