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Dentomaxillofacial Radiology, Vol 30, Issue 2 88-91, Copyright © 2001 by British Institute of Radiology

ARTICLES

Resorption of the lateral pole of the mandibular condyle in temporomandibular disc displacement

H. Kurita, A. Ohtsuka, H. Kobayashi and K. Kurashina
Department of Dentistry and Oral Surgery, Shinshu University School of Medicine, Asahi, Matsumoto, Japan.

OBJECTIVES: To assess the possible relationship between resorption of the superolateral pole of the mandible condyle (RSLC) and TMJ disk displacement. METHODS: Two hundred and seventeen TMJs in 138 patients were studied. Displacement of the disc, degree of displacement and disc configuration were assessed using MRI. RSLC was assessed from a transorbital radiograph. RESULTS: Seventy-two joints (37%) were considered to have RSLC. A significantly higher prevalence of RSLC was found in joints with disc displacement (goodness test of fit for chi-square, P<0.05). A significantly higher prevalence of RSLC was found in joints with advanced disc displacement and advanced disk deformation (Mann-Whitney U-test, P<0.01). CONCLUSIONS: RSLC appears more likely to occur in joints with advanced disc displacement.


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