Chapter 11 - Sinuses/Mandible/TMJ Positioning Flashcards
Mandible Protocol
Axiolateral (both sides)
PA Caldwell
Townes
Sinuses Protocol
Lateral
Modified Caldwell
Waters
Waters OM
SMV
TMJ Protocol
Townes
Modified Law or Schuller
Sinuses viewed in Lateral projection
Frontal
Ethmoid
Sphenoid
Maxillary
Where is OML to the IR in Modified Caldwell for sinuses
OML 15 degrees from perp
Where does the CR exit for Modified Caldwell (sinuses)
Nasion
What is perp to the IR in Waters
MML
What sinuses are viewed in Waters projection
Frontal, Maxillary
What sinuses are viewed in Open Mouth Waters projection
Sphenoid
What sinuses are viewed in SMV
Sphenoid
Ethmoid
Maxillary
What is parallel to the IR in SMV projection
IOML
What is the total degree of head tilt and CR angle for Axiolateral position
25 degrees
CR for PA Caldwell (Mandible)
@ Lips
What is perp to the IR for Townes (Mandible)
OML
What angle is used for Townes
30 degrees caudal
Where is the CR for Townes (Mandible)
1” above Glabella
Crosshairs running through ramus
Where does the CR exit for Axiolateral projection
Mandible body of interest
Where is the CR for Townes (TMJ)
2” superior to nasion
Crosshairs running through TMJ
What is perp to the IR in a Modified Law projection
IPL
What is the tube angle and face rotation in Modified Law projection
Rotate face 15 degrees towards IR
15 degree caudal angle
CR for Modified Law projection
1.5” superior to upside EAM
What is perp to the board in the Schuller projection
IPL
What is the tube angle in Schuller projection
25-30 caudal
Where is the CR for Schuller projection
2” above EAM
What sinuses are viewed in Modified Caldwell
Frontal
Ethmoid
Maxillary
What mandible position best demonstrates the ramus
Lateral
Axiolateral projection for Mandible; 10-15 degree rotation best demonstrates:
General survey of mandible
Axiolateral projection for Mandible; 30 degree rotation best demonstrates:
Body of mandible
Axiolateral projection for Mandible; 45 degree rotation best demonstrates:
Mentum of mandible
Axiolateral oblique projection - What must be done to prevent the ramus of the mandible from being superimposed over the cervical spine
Extend the chin
If mandible body is the area of interest, what is perp to the IR in PA projection
AML
What aspect of the mandible is best visualized with AP axial projection?
Condyloid process
What crainal line is parallel to the floor for orthopantomography of the mandible
IOML
What projection provides a bilateral and functional study of the TMJ
Modified Law
