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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)

Spring 2002
Volume 16 , Issue 2

Share Abstract:

Mandibular Movement Characteristics of an Anterior Disc Displacement with Reduction

James J.R. Huddleston Slater, DDS, Frank Lobbezoo, DDS, PhD, Machiel Naeije, PhD

Pages: 135142
PMID: 12043520

Aims: According to the Research Diagnostic Criteria (J Craniomandib Disord 1992;6(4):301355), an anterior disc displacement with reduction (ADD) is characterized by reciprocal clicking with the opening click occurring at a mouth opening at least 5 mm greater than that of the closing click. The aim of this study was to test whether the 5-mm criterion of the RDC is characteristic for a click due to an ADD. Methods: From 30 participants with a unilateral ADD, recordings of mandibular movements with 6 degrees of freedom as well as joint sound recordings were made. The participants performed free open movements and loaded closing movements. Results: In 8 joints (27%), the 5-mm criterion was not fulfilled. For 2 participants, the click while closing occurred with an even larger mouth opening than that while opening. Recordings of the condylar movements showed that the opening clicks occurred over a broad range of the opening movement, whereas all the closing clicks occurred just before the condyle reached its terminal position in the fossa. Conclusion: The 5-mm criterion of the RDC is not characteristic of all anterior disc displacements with reduction. J OROFAC PAIN 2002;16:135142.

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