CHAPTER 23: EXTRAORAL PROJECTION TECHNIQUE Flashcards
evaluate impacted teeth, fractures, and lesions located in the body of the mandible.
This projection demonstrates the mandibular premolar and molar regions as well as the inferior border of the mandible
LATERAL JAW PROJECTION-BODY OF MANDIBLE
to evaluate impacted third molars, large lesions, and fractures that extend into the ramus of the mandible.
This projection demonstrates a view of the ramus from the angle of the mandible to the condyle
LATERAL JAW PROJECTION-RAMUS OF MANDIBLE
used to examine the bones of the face and skull and is most often used in oral surgery and orthodontics.
SKULL IMAGING
To evaluate facial growth and development, trauma, disease and developmental abnormalities; shows soft tissue profile
LATERAL CEPHALOMETRIC
To evaluate facial growth and development, trauma, disease and developmental abnormalities; shows sinuses, nasal cavity, and orbits
POSTOANTERIOR projection
To evaluate the maxillary sinus area; shows sinuses, nasal cavity, and orbits
WATERS projection
To identify the position of the condyles, demonstrate the base of the skull, and evaluate fractures of the zygomatic arch
SUBMENTOVERTEX
To identify fractures of the condylar neck and ramus
REVERSE TOWNE
To evaluate the TMJ area
Temporomandibular
The following two extraoral techniques may be used in TMJ imaging:
- Transcranial projection
* Temporomandibular joint tomography
evaluates the superior surface of the condyle and the articular eminence
TRANSCRANIAL PROJECTION
used to examine the TMJ
Temporomandibular Joint Tomography
TMJ tomography provides imaging of :
bony components of TMJ
the condyle, the articular eminence, and the glenoid fossa can all be examined on an image known as the what?
tomogram
