Lecture 3 Flashcards
What are advantages of digital dental radiology?
- decreased radiation exposure
- rapid development
- ease of repositioning
- no film, chemical cost
- no chemical disposa;
- decreased employee time developing, filing radiographs
what are disadvantages of digital dental radiology?
cost 8000-20000
What are indications for x-ray?
many
What do you do to minimize patient movement under GA for radiographs?
take radiographs of one side, clean, flip, radiographs, clean
Where does the dot on the film go?
cranial, mesial, rostral
face the convex side towards x-ray beam
Why do you place the film as close to the tooth as possible?
to minimize distortion
What are the two techniques of radiographs?
- parallel technique
2. bisecting angle technique
What are the features of parallel techinque
most accurate image
film parallel to tooth, perpendicular to beam
What is the only places that parallel technique can be used?
MANDIBULAR premolars and molars of dog and cat
What are the features of the bisecting angle technique?
film placed as parallel as possible to tooth root
angle between tooth root and film measured
angle cut in half and beam placed permendicular to angle
most accurate representation of root possible
most common positioning in vet patients
When looking for correct angle for bisecting angle technique. where do you look for incisors and canines?
from the side (tip tube 20 degrees forward and 20 degrees to the side
When looking for correct angle for bisecting angle technique. where do you look for maxillary premolars, molars
look from front of animal
place tube head 45 degrees to side
why do cats need a modified radiograph technique?
avoid superimposition of zyogmatic arch
What are the three simple rules of taking x-rays?
- if image foresshortened or elongated adjust tube angle
- if cut target off at edge of beam, move beam toward area of cone cut
- if cut target off at edge of film, move film ove to area cut off
If you aren’t certain about a radiograph?
look at the other side
