• F Lobbezoo, C M Visscher, and M Naeije.
• Department of Oral Kinesiology, Academic Centre for Dentistry Amsterdam (ACTA), Research Institute MOVE, University of Amsterdam and VU University Amsterdam, Amsterdam, The Netherlands. f.lobbezoo@acta.nl
• J Oral Rehabil. 2010 Oct 1;37(10):779-83.

AbstractA large-scale, multi-site study has been performed to examine the reliability and validity of the research diagnostic criteria for temporomandibular disorders (RDC/TMD) and to suggest revisions of the current RDC/TMD. During an International Association for Dental Research (IADR) Workshop in July 2008, preliminary results of this RDC/TMD Validation Project were presented. One of us was invited to be the critical discussant of the Workshop session in which the Study Group's papers were presented. This article is based on that contribution. One of our concerns relates to the possible circularity and bias, introduced by incorporating the RDC/TMD tests under investigation into the criterion examination. This may have had serious consequences for the outcomes of the validity study as well as for the proposed revisions of the diagnostic algorithms. In addition, a more detailed description of the process of replacing the RDC/TMD tests by other tests is needed. Further, to come to a revised RDC/TMD, it is crucial to know not only how the test outcomes are capable of discriminating between patients with TMD pain and pain-free subjects, as studied in this Validation Project, but also, more importantly, how they discriminate between patients with TMD pain and patients with oro-facial pain (OFP) complaints of non-TMD origin. We welcome the suggestion of an international expert panel to consider, deliberate, and reach consensus on a revised version of the RDC/TMD. Finally, we agree that the suggested expansions of the RDC/TMD taxonomy stress the need for the development of an RDC for OFP, which would include, as an integral part, the revised RDC/TMD.© 2010 Blackwell Publishing Ltd.

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