Mandibular Movement Characteristics of an Anterior Disc Displacement with Reduction

• Autores: James J. R. Huddleston Slater, Frank Lobbezoo, Machiel Naeije
• Localización: Journal of Oral & Facial Pain and Headache, ISSN-e 2333-0376, ISSN 2333-0384, Vol. 16, Nº. 2, 2002, págs. 135-142
• Idioma: inglés
• Enlaces
  • Texto completo (pdf)
• Resumen

  • Aims: According to the Research Diagnostic Criteria (J Craniomandib Disord 1992;6(4):301-355), 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.