tmj.ppt
Transcript of tmj.ppt
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TMJ Radiography
Jon K. Park, D.D.S., M.S.University of Maryland School of DentistryDepartment of Oral MedicineBaltimore, MD 21201
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TMJ RadiographyRadiographs UsedPanoramicLateral TranscranialTransmaxillaryPA TowneTomogramLateralPA TomoCTMRI
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TMJ RadiographyPanoramicUsed as a scout film
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TMJ radiographsLateral TranscranialGenerally taken in rest, closed, and open positionsShows condylar morphology, lateral aspectNot good for evaluation of condylar position
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TMJ radiographyTransmaxillaryTaken in open positionEvaluates the superior aspect of the condyles from medial to lateralTaken through orbit, AP view
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Lateral TranscranialUse TMJ BoardX-ray tube position11 deg. Down1 in above and 1 inch behind EAMAlign with opposite condyle
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TMJ radiographyPA TowneTaken in the open positionEvaluates medial and lateral poles of condylePatient must be able to open adequately for this film to be of any use
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TMJ TomogramLateralEvaluates condylar position and condylar morphologyLateral, Open viewEvaluates condylar translationPA Tomogram
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TMJ CT and MRICTEvaluates osseous and soft tissue componentsGenerally does not show the meniscusMRIGood for assessing the meniscus and soft tissue
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TMJ ArthrographyDemonstrates meniscusMust be done under fluoroscopyRadiopaque dye injectionContraindicated with iodine sensitive patients
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Lateral transcranial radiographClosedOpenRest
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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 DentistryDepartment of Oral MedicineBaltimore, MD 21201