tmj radiography jon k. park, d.d.s., m.s. university of maryland school of dentistry department of...
TRANSCRIPT
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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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TMJ Radiography Radiographs Used
Panoramic Lateral Transcranial Transmaxillary PA Towne Tomogram
Lateral PA Tomo
CT MRI
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TMJ Radiography
Panoramic Used as a “scout” film
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TMJ radiographs
Lateral Transcranial Generally taken in “rest, closed, and open”
positions Shows condylar morphology, lateral aspect Not good for evaluation of condylar
position
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TMJ radiography
Transmaxillary Taken in open position Evaluates the superior aspect of the
condyles from medial to lateral Taken through orbit, AP view
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Lateral Transcranial
Use TMJ Board X-ray tube position
11 deg. Down 1 in above and 1 inch behind EAM Align with opposite condyle
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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
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TMJ Tomogram
Lateral Evaluates condylar position and condylar
morphology
Lateral, Open view Evaluates condylar translation
PA Tomogram
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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
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TMJ Arthrography
Demonstrates meniscus Must be done under fluoroscopy Radiopaque dye injection
Contraindicated with iodine sensitive patients
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Lateral transcranial radiograph
Closed Open Rest
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Lateral Transcranial – closed view
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Transpharyngeal (Parma) view
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MRI
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MRI - TMJ
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Flattening of the condyle
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TMJ Radiography
Jon K. Park, D.D.S., M.S. University of Maryland School of
Dentistry Department of Oral Medicine
Baltimore, MD 21201