Transcript Chapter 12 Part 2 - University of Nevada, Las Vegas

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
– Posterior projection of mandibular notch
– Condyle
– Neck
Mandibular Body
• ____________
– Division of Right and Left
• _________ (Mental Protuberance)
– Anterior projection (Chin)
• Mental ________
– Center of mental protuberance
• Mental ________
– Holes for nerves and blood vessels
TMJ
Temporomandibular Joint
• Only ___________in the skull
• Mandibular condyle and Temporomandibular
fossa
• Synovial / Diarthrodial
• Hinge (_________) and gliding (_______)
movement
Orbits
• 7 bones
• Rim
– _________
– Zygoma
– _________
• Posterior walls
–
–
–
–
Lacrimal
___________
___________
Palatine
Orbit shape
• Cone Shaped
– Apex at ____________
• With ____________with the floor
– _____ superior
– _____ toward mid sagittal
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)
Imaging the Mandible
Routine
•
•
•
•
•
•
•
PA
AP Towne
Axiolaterals
Lateral
70 – 80 kV
40” SID
Panorex**
PA Mandible
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•
•
•
•
Prone
Forehead and nose on table
______________to IR
Have pt close mouth
CR to _______________of lips
• Remember can be done __________
AP Towne
• Supine
• ________________to IR
• Angle CR ______________
• Center at level of ______________
Axiolateral
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•
Right and left
Position pt in ___________
Tilt head __________
Midsagittal plane to form ___________
Center through mid mandibular body
If pt cannot tilt head ____________
Panorex
• Position head in panorex with ___________to
floor
• No rotation
• Instruct pt to remain still.
• _____________in
• Tube will rotate around pt
• Entire Mandible seen ____________
Imaging the TMJ
• Law’s ___________mouth
• Schuller’s __________mouth
• 70-80 kVp
• 40” SID
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
Schuller’s
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•
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•
•
•
Right and Left
Position into ____________
Place pt into true facial bone lateral
Angle CR ___________
Center to downside TMJ
____________mouth
Imaging the Orbits
Routine
•
•
•
•
Waters
Rhese
70 kV
40” SID
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