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Week 11 : TMJ

Week 11 : TMJ. RT 233. AP Axial TMJ. 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.

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Week 11 : TMJ

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  1. Week 11 : TMJ RT 233

  2. AP Axial TMJ • 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

  3. AP Axial TMJ Radiograph • No rotation • Minimal superimposition of petrosa on condyle in closed mouth • Condyle and TMJ below pars petrosa in open mouth

  4. Axiolateral Oblique 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

  5. Axiolateral Oblique TMJ Radiograph • TMJ • Condyle lying in mandibular fossa in closed mouth • Condyle lying inferior to articular tubercle in open mouth

  6. Axiolateral Oblique Open mouth

  7. Axiolateral Oblique Open mouth Temporomandibular fossa condyle Coronoid

  8. Axiolateral ObliqueClosed mouth

  9. Axiolateral ObliqueClosed mouth Temporomandibular fossa condyle coronoid

  10. Axiolateral TMJ’s • CR 25-30 degrees • Enters ½” anterior and 2” superior to upside EAM • IPL Perpendicular • MSP parallel

  11. Evaluation Criteria • TMJ lying anterior to the EAM • Condyle in fossa (closed mouth) • Condyle inrerfior to articular tubercle (open mouthP

  12. Axiolateral Closed Mouth

  13. Axiolateral Open Mouth

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