A Comparative Assessment of Mandibular Condylar Position in Patients with Anterior Disc Displacement of the Temporomandibular Joint

Jaime Gateno, Paul B. Anderson, James J. Xia, Julie C. Horng, John F. Teichgraeber, Michael A K Liebschner

Research output: Contribution to journalArticle

37 Scopus citations

Abstract

Purpose: The purpose of this study was to determine whether the position of the mandibular condyle in patients with anterior disc displacement (ADD) is different from that of a control group with normal joints using a novel method to quantify the irregular shape of the temporomandibular joint (TMJ). Materials and Methods: Twenty-six magnetic resonance images of TMJs with ADD were evaluated and compared with 14 normal joints. The position of the condyle was determined by using 2 different methods: 1) measuring the horizontal and vertical normalized distances in millimeters between the geometric centers of the glenoid fossa and the condyle and 2) calculating the anteroposterior joint space ratio. Results: Using the first method, the horizontal distance between the centers of the condyle and the glenoid fossa was 14.0 ± 11.1 in the ADD group and 5.3 ± 10.9 in the control group (P < .001). The vertical distance was 64.7 ± 22.7 in the ADD group and 68.3 ± 32. 9 in the control group (P = .015). The ratio of the horizontal and the vertical condylar displacement in the ADD group was 2.4. Using the second method, the anteroposterior joint space ratios in the ADD group and in the control group were 1.7 ± 0.5 and 1.2 ± 0.4, respectively (P = .001). Conclusion: This study found that condyles of patients with ADD were situated more posterior and superior in the fossa than those in the control group. Moreover, in the ADD group, the posterior condylar displacement was noted to be 2.4 times greater than the superior condylar displacement.

Original languageEnglish (US)
Pages (from-to)39-43
Number of pages5
JournalJournal of Oral and Maxillofacial Surgery
Volume62
Issue number1
DOIs
StatePublished - Jan 2004

ASJC Scopus subject areas

  • Surgery
  • Oral Surgery
  • Otorhinolaryngology

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