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TMJ pos
Question | Answer |
---|---|
AP Axial mandible for Temporomandibular Joints | OML perpendicular to IR, CR 35* caudad to OML (42 degrees to IOML), centered to 3" above nasion to pass through TMJs if they are area of interest |
axiolateral oblique (modified Law method) for temporomandibular joints | IOML parallel to top edge of IR, anterior head rotated 15* toward IR with IPL perpendicular to IR, CR 15* caudad, centered to exit through down-side TMJ to eneter 11/2" superior to upside EAM, open and closed mouths and R and L sides done for comparison |
axiolateral (Schuller Method) for temporomandibular joints | IOML parallel to IR, true lateral, CR 25 degress caudad, center to exit through downside TMJ-to enter 2" superior and 1/2" anterior to upside EAM, do both closed and open mouth and L and R sides for comparison |
AP Axial Temporomandibular | Supine or seated upright, Posterior teeth closed and in contact, For open mouth- wide as possible without chin jutted forward, OML perp to IR, CR 35 caudad, centered midway between TMJ’s., Enters approx 3” above nasion |
AP Axial TMJ Radiograph | No rotation, Minimal superimposition of petrosa on condyle in closed mouth, Condyle and TMJ below pars petrosa in open mouth |
Axiolateral TMJ | Semiprone or seated, Center ½” anterior to EAM, Rest cheek on grid device, Rotate MSP approx 15 degrees toward IR, IPL perpendicular, CR 15 caudad exiting through TMJ closest to IR about 1 ½ “ superior to upside EAM |
Axiolateral TMJ Radiograph | Condyle lying in mandibular fossa in closed mouth ,Condyle lying inferior to articular tubercle in open mouth |