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TMJ Radiography

TMJ Radiography. Jon K. Park, D.D.S., M.S. University of Maryland School of Dentistry Department of Oral Medicine Baltimore, MD 21201. TMJ Radiography. Radiographs Used Panoramic Lateral Transcranial Transmaxillary PA Towne Tomogram Lateral PA Tomo CT MRI. TMJ Radiography.

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TMJ Radiography

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  1. TMJ Radiography • Jon K. Park, D.D.S., M.S. • University of Maryland School of Dentistry • Department of Oral Medicine • Baltimore, MD 21201

  2. TMJ Radiography • Radiographs Used • Panoramic • Lateral Transcranial • Transmaxillary • PA Towne • Tomogram • Lateral • PA Tomo • CT • MRI

  3. TMJ Radiography • Panoramic • Used as a “scout” film

  4. TMJ radiographs • Lateral Transcranial • Generally taken in “rest, closed, and open” positions • Shows condylar morphology, lateral aspect • Not good for evaluation of condylar position

  5. TMJ radiography • Transmaxillary • Taken in open position • Evaluates the superior aspect of the condyles from medial to lateral • Taken through orbit, AP view

  6. Lateral Transcranial • Use TMJ Board • X-ray tube position • 11 deg. Down • 1 in above and 1 inch behind EAM • Align with opposite condyle

  7. TMJ radiography • PA Towne • Taken in the “open” position • Evaluates medial and lateral poles of condyle • Patient must be able to open adequately for this film to be of any use

  8. TMJ Tomogram • Lateral • Evaluates condylar position and condylar morphology • Lateral, Open view • Evaluates condylar translation • PA Tomogram

  9. TMJ CT and MRI • CT • Evaluates osseous and soft tissue components • Generally does not show the meniscus • MRI • Good for assessing the meniscus and soft tissue

  10. TMJ Arthrography • Demonstrates meniscus • Must be done under fluoroscopy • Radiopaque dye injection • Contraindicated with iodine sensitive patients

  11. Lateral transcranial radiograph Closed Open Rest

  12. Lateral Transcranial – closed view

  13. Transpharyngeal (Parma) view

  14. MRI

  15. MRI - TMJ

  16. Flattening of the condyle

  17. TMJ Radiography • Jon K. Park, D.D.S., M.S. • University of Maryland School of Dentistry • Department of Oral Medicine • Baltimore, MD 21201

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