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Correlation between disk morphology on MRI and time curves using electronic axiography.

Martina Schmid-Schwap1, Johann Gerold Briedl, Soraya Robinson

  • 1University Clinic of Dentistry, A-1130 Vienna, Austria. schwap@univie.ac.at

Cranio : the Journal of Craniomandibular Practice
|February 25, 2005
PubMed
Summary

Magnetic resonance imaging (MRI) disk morphology findings do not correlate with axiography time curves in evaluating temporomandibular joint disorders. Clinical evaluation and MRI remain crucial for diagnosing anterior disk displacement.

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Area of Science:

  • Dentistry
  • Radiology
  • Biomechanics

Background:

  • Temporomandibular joint (TMJ) disorders are common.
  • Accurate diagnosis of TMJ disc displacement is essential for effective treatment.
  • Magnetic resonance imaging (MRI) and axiography are used to assess TMJ morphology and function.

Purpose of the Study:

  • To investigate the correlation between morphological disc findings on MRI (open and closed mouth) and time curves obtained from axiography.
  • To determine if axiographic data can predict TMJ disc morphology.

Main Methods:

  • Retrospective analysis of 45 temporomandibular joints from 33 patients.
  • MRI scans were performed with the mouth open and closed.
  • Joint movements were assessed using electronic axiography.

Related Experiment Videos

  • Disc morphology was classified (normal, partly flattened, partly thickened, completely thickened).
  • Axiographic tracings generated time curves for joint movements.
  • Statistical analysis (scatter plots, discriminant analysis) was used to find correlations.

    • Main Results:

    • No significant correlation was found between MRI-based disc morphology and axiographic time curves.
    • Axiographic time curves did not provide reliable conclusions regarding TMJ disc morphology.

    Conclusions:

    • Axiography time curves are not a reliable indicator of TMJ disc morphology.
    • MRI remains a valuable tool for diagnosing anterior disc displacement.
    • Clinical history and thorough clinical evaluation are vital adjuncts to imaging in TMJ disorder diagnosis.