1. Chapter 13
Facial Bones
Part 1

2. Facial Bones 14 Bones 2 Maxillae 2 Zygomatic 2 Lacrimal 2 Nasal
2 Inferior nasal conchae
2 Palatine
1 Vomer
1 Mandible

3. Maxillary Largest _________________ facial bone Upper jaw __________
– Central portion lateral to nose
__________________
Superior projection off body lateral to nose

4. Maxillary __________________ ____________________ Lateral projection
Inferior spaces for upper teeth
____________________
Hard palate (cleft palate location)

5. Maxillary Fused ________________to nose ____________________
Anterior projection at fusion
_____________
Positioning landmark at base of anterior nasal spine

6. Palatine ‘L’ shaped Vertical portion between _____________ of sphenoid
Horizontal portion makes up ___________________________

7. Zygomatic (Malar) Cheek bones Articulations ____________ Temporal
Sphenoid

8. Zygomatic ______________________ _______________________
Prominent lateral portion
_______________________
Thin bone extending from zygomatic prominence to temporal bone

9. Nasal 2 fused bones ________________ Majority of nose ________________
Positioning landmark superior to nasal bone fusion
Majority of nose ________________

10. Nasal Septum Bony Septal cartilage anterior _____________-
- _____________ of ethmoid and _________
Septal cartilage anterior
_____________-
Forms mid to inferoposterior nasal septum.

11. Nasal Conchae Turbinates
_______________________
Bony projection from lateral wall of nasal cavity projecting medially.
__________________nasal conchae
Extensions from ethmoid bone

12. Lacrimal
Small facial bone
Posterior to frontal process of maxilla

13. Imaging the Facial Bones
Routine
PA Caldwell
Waters
Lateral
70 – 80 kVp
40” SID

14. PA Caldwell Prone Pt’s forehead and nose touching table
_______________to IR
No tilt or rotation
__________tube angle
CR to exit the ___________________

15. PA Caldwell cont’d ________________ should be in lower 3rd of orbits
_______________of orbits should be ____________from lateral skull
Shows Orbits, Petrious ridges, nasal septum, frontal, maxillary sinus

16. Waters Parietoacanthial
Prone
Tip of pt’s _____________
OML forms ___________to IR
__________perpendicular
____________plane perpendicular
CR to exit __________
Shows majority of facial bones and sinuses
______________inferior to maxillary sinuses

17. Lateral Right or left depending on area of interest
Put area of interest ______________
Pt in ________________
Rotate head so ________________is parallel
_________________perpendicular
______ perpendicular to front of cassette
CR at ___________________

18. Imaging the Nasal Bone Routine Waters Laterals Waters 70 – 80 kVp
Laterals 50 – 60 kVp
40” SID

19. Laterals Right and Left Lateral Position as ____________
CR directed through ____________-
Tight collimation
Soft tissue technique

20. Imaging the Zygomatic Bones
Routine
AP Towne
SMV
Tangential (If Zygos not seen on SMV)
50 – 65 kVp
BONE TECHNIQUE

21. AP Towne Zygo Supine Tuck chin so ________________to IR
Angle CR ____________
Or Tuck chin so _______________and angle ________
Center ________________to pass through mid arches

22. SMV Submentovertex Many ways to position _______________to IR
______________perpendicular
CR through arches
Technique is soft tissue to visualize zygos

23. Tangential Position as ________
Rotate and tilt head __________affected side
CR to “shave” Zygo arch