Flashcards in Exam 1.11: Panographic Radiography Deck (25)
A pan would be good for getting more details about a lesion whose borders extend past what?
The edge of intraoral radiographs
What type of traumatic injuries are pan's especially good for
Mandible injury to evaluate a fracture and then subsequent fracture healing after treatment
Pans are good for evaluation of third molars. Besides the tooth's location what other factors are being considered
Proximity to the neurovascular bundle or maxillary antrum
What is a pan good for, especially for patients between the ages of 6-12?
Mixed dentition analysis
How might a pan help when evaluating a fibrous dysplasia?
Evaluation of asymmetry of swelling
How might a pan be of use to a dentist designing new dentures for a patient
Examining the relationship of the crest of the ridge to the mandibular canal, floor of the nose and sinuses
What sinus is typically evaluated using a pan
What type of TMD could be evaluated with a pan
Osseous symptoms, like degeneration and arthritis
if you have already taken a baseline pan, what do you need to have in order to justify taking another f/u pan?
Clinical evidence of disease
What errors will be caused if the patient is positioned with their chin down?
V shaped mandibular profile
Exagerrated curve of spee
V shaped hard palate
Condyles might be off of film
What errors will be caused if the patient is positioned with their chin up
Flat mandibular profile
Flat or reversed curve of spee
Inverted hard palate
What errors occur if the patient is seated too far forward
Teeth (especially anterior) seem narrow
Cervical spine overwhelms the rami
Structures are blurred
What error occur if the patient is seated too far back
Teeth seem wide
Cervical spine disappears off of the lateral edge of film
What errors occur if the patient's head is twisted
Teeth on the side the patient is facing will be close to the tubehead and will appear wide
Opposite side teeth will appear narrow
What errors will occur if the head is tilted
Image of angle of mandible and earlobe will be lower on one side than the other
What positioning error will cause partially opaque triangles to appear over anterior mandible
Branching, thin radiolucent line with a fern like pattern are caused by what technical error
Static electricity caused by pulling a screen film combo out of a plastic cassette quickly in low humidity
Thin opaque lines of uniform width appear in the same location on every film taken
Scratched/cracked intensifying screen
What technical error will cause thin, cruvilinear radiolucencies where film was held too tightly
What is it called when the images of two sets of jaws appears on the same film
What happens in a light leak technical error?
Radiolucent line or zone will appear in the same place on all films taken with that cassette
How would an incomplete exposure occur?
By not holding down the xray button until the beep
What is is called when you over expose film by turning the darkroom lights on prematurely
Moisture droplets will appear like what on the image