Term | Definition |
Extraoral Images | - placed outside the mouth during xray exposure
- most common is pano |
Purpose | overall view of skull and jaws |
Cephalostat | pano xray tube head used in conjunction w special extension arm |
Film | - sizes vary
- 5x7 or 8x10 or size 4 occlusal receptor |
Grid | -used to reduce amount of scatter radiation that reaches extraoral film during exposure
-decrease film fog and increase contrast |
Lateral Jaw Imaging | - examine post region of MD
- useful in kids, PT w limited jaw movement |
Lateral Jaw Imaging -- Body of MD | eval impacted teeth, fractures, and lesions |
Lateral Jaw Imaging -- Ramus of MD | - eval impacted 3rd molars, lg lesions, fractures extend past ramus |
Skull Imaging | examine bones of the face and skull
- used in oral surgery and ortho |
Lateral Cephalometric Projection | - eval fcaial growth and development, trauma, and disease
- bones of face/skull, soft tissue profile of face |
Postanterior Projection | - eval facial growth and development, trauma and disease
- frontal and ethmoid sinuses, orbits, and nasal cavity |
Waters Projection | - eval MX sinus, frontal and ethmoid sinuses and nasal cavity |
Submentovertex Projection | - ID posi of condyles, base of skull, eval fractures in zygomatic
- Sphenoid and ethmoid sinuses, lateral wall of MX sinus |
Reverse Towne Projection | - ID fractures of condylar neck and ramus area |
TMJ Imaging | - arthrography of MRI must b used to examine this area
- transcranial projection and TMJ tomography used |
Transcranial Projection (Lindblom Technique) | eval superior surface of condyle and articular eminence
- Used to eval movement |
TMJ Tomography | examine TMJ |