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Chapter 11 Part 4

Chapter 11 Part 4. Mandible and Orbits. Mandible. Largest _________ facial bone 2 parts ______ ______ Angle ( Gonion ). Mandibular Ramus . ____________ – ‘U’ shape at top of mandibular ramus __________ Process – Anterior projection of mandibular notch __________ Process

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Chapter 11 Part 4

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  1. Chapter 11Part 4 Mandible and Orbits

  2. Mandible • Largest _________facial bone • 2 parts • ______ • ______ • Angle (Gonion)

  3. Mandibular Ramus • ____________ – ‘U’ shape at top of mandibular ramus • __________ Process – Anterior projection of mandibular notch • __________ Process – Posterior projection of mandibular notch • Condyle • Neck

  4. Mandibular Body • ____________ – Division of Right and Left • _________ (Mental Protuberance) – Anterior projection (Chin) • Mental ________ – Center of mental protuberance • Mental ________ – Holes for nerves and blood vessels

  5. TMJTemporomandibular Joint • Only ___________in the skull • Mandibular condyle and Temporomandibular fossa • Synovial / Diarthrodial • Hinge (_________) and gliding (_______) movement

  6. Orbits • 7 bones • Rim • _________ • Zygoma • _________ • Posterior walls • Lacrimal • ___________ • ___________ • Palatine

  7. Orbit shape • Cone Shaped • Apex at ____________ • With ____________with the floor • _____superior • _____ toward mid sagittal

  8. Orbit openings • Optic ____________ – Hole in sphenoid for optic nerve • Superior ____________ – Cleft between greater and lesser wing of sphenoid • Inferior ____________ – Cleft between maxilla, zygo, and greater wing of sphenoid • ____________ – Separates superior orbital fissure and optic canal (for optic foramen)

  9. Imaging the Mandible Routine • PA • AP Towne • Axiolaterals • Lateral • 70 – 80 kV • 40” SID • Panorex**

  10. PA Mandible • Prone • Forehead and nose on table • ______________to IR • Have pt close mouth • CR to _______________of lips • Remember can be done __________

  11. AP Towne • Supine • ________________to IR • Angle CR ______________ • Center at level of ______________

  12. Axiolateral • Right and left • Position pt in ___________ • Tilt head __________ • Midsagittal plane to form ___________ • Center through mid mandibular body • If pt cannot tilt head ____________

  13. Panorex • Position head in panorex with ___________to floor • No rotation • Instruct pt to remain still. • _____________in • Tube will rotate around pt • Entire Mandible seen ____________

  14. Imaging the TMJ • Law’s ___________mouth • Schuller’s__________mouth • 70-80 kVp • 40” SID

  15. Law’s • Right and Left • Position in ______________downside TMJ to be imaged • Place pt in true facial bone ________ • Rotate face _________table • Angle CR ___________ • Center through downside TMJ • Do ____________mouth

  16. Schuller’s • Right and Left • Position into ____________ • Place pt into true facial bone lateral • Angle CR ___________ • Center to downside TMJ • ____________mouth

  17. Imaging the Orbits Routine • Waters • Rhese • 70 kV • 40” SID

  18. Rhese • Prone • Pt’s_________________on table (3 points) • Rotate head ____________affected side • Mid sagittal plane will have a ___________ • _______________to IR • Center through downside Orbit • Optic foramen should be in lower lateral aspect

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