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Current trends in temporomandibular joint imaging

T A Larheim1

  • 1Department of Oral Radiology, Faculty of Dentistry, University of Oslo, Norway.

Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics
|November 1, 1995
PubMed
Summary

Advanced diagnostic imaging, particularly magnetic resonance imaging (MRI), significantly improves the diagnosis of temporomandibular joint disorders like disk displacement and inflammation. MRI offers high accuracy in evaluating internal derangements and inflammatory conditions.

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Area of Science:

  • Radiology
  • Orthodontics
  • Oral and Maxillofacial Surgery

Background:

  • Temporomandibular joint (TMJ) disorders are prevalent, necessitating advanced diagnostic tools.
  • Traditional imaging methods have limitations in differentiating TMJ pathologies.

Purpose of the Study:

  • To review and discuss advanced diagnostic imaging modalities for TMJ disorders.
  • To highlight current trends in TMJ imaging, focusing on internal derangement, inflammation, and tumors.

Main Methods:

  • Review of magnetic resonance imaging (MRI), computed tomography (CT), and arthrography.
  • Emphasis on MRI techniques like oblique sagittal and coronal views, and T2-weighted imaging.
  • Discussion of contrast-enhanced MRI with gadopentetate dimeglumine for specific conditions.

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Main Results:

  • MRI achieves over 90% diagnostic accuracy for disk displacement with or without bone abnormalities.
  • T2-weighted MRI effectively detects inflammatory reactions like joint effusion and marrow edema.
  • MRI can reveal abnormalities missed by other modalities in chronic inflammatory diseases and tumors.

Conclusions:

  • Magnetic resonance imaging is the preferred modality for evaluating most TMJ disorders, surpassing arthrography and CT.
  • MRI provides detailed insights into disk displacement, inflammation, and associated bone marrow changes.
  • CT remains valuable for assessing bone conditions and calcifications in complex TMJ cases.