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Related Experiment Videos

Temporomandibular joint space analysis

R A Cederberg1

  • 1Division of Oral and Maxillofacial Radiology, Department of Diagnostic Sciences, Baylor College of Dentistry, Dallas, Texas.

Cranio : the Journal of Craniomandibular Practice
|July 1, 1994
PubMed
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This study compared actual and radiographic joint space in temporomandibular joint (TMJ) imaging. Radiographic measurements did not accurately reflect the true joint space, impacting TMJ diagnosis.

Area of Science:

  • Dentistry
  • Radiology
  • Orthodontics

Background:

  • Temporomandibular joint (TMJ) diagnosis often relies on radiographic assessment of condyle position.
  • Accurate measurement of the TMJ's radiographic joint space is crucial for diagnosis.

Purpose of the Study:

  • To determine the relationship between actual and radiographic joint space in the TMJ.
  • To evaluate the accuracy of lateral corrected tomograms in assessing TMJ joint space.

Main Methods:

  • Vacuum-formed shims of varying thicknesses (0.15 mm to 1.60 mm) were placed on a human skull's condylar heads.
  • Lateral corrected tomograms of the TMJs were acquired using a Soredex Scanora.
  • Actual shim thickness was measured with a caliper and compared to radiographic measurements.

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Main Results:

  • A discrepancy was observed between the actual joint space (measured by shims) and the radiographic joint space.
  • The study quantified the extent of this comparison, indicating potential inaccuracies in radiographic interpretation.

Conclusions:

  • Radiographic joint space measurements derived from lateral corrected tomograms may not precisely represent the actual TMJ joint space.
  • Findings suggest a need for caution when interpreting TMJ radiographs solely based on joint space dimensions.