Dental Radiology Flashcards
What are the two different systems for intraoral radiographs
1) CR systems
2) DR systems
CR systems
Positive: variety of plate sizes
Negative: more expensive, plates have to be replaced
DR systems
Postive: more affordable to purchase
easier to learn to use
Negative: only a size 2 plat (on a large dog, youre taking a lot of images)
What are the types of generators used in intraoral radiographs
Handheld: allow for greater flexibility in space within a dental suite, may not be allowed everywhere (Canada), may be harder to learn with
Wall or floor mounted: easier for learning, less flexible for physical space issues
What is the difference between radiographs vs intraoral radiographs
plate is in the mouth of patient (need to be anesthetized), not sedated
intra-oral gets rid of superposition and only gets one side
Why do we not do sedated intraoral radiographs in small animals
sedated patients can still bite
Why arent dental radiographs not labeled
you can look at it and know what side youre looking at
How do you tell if the dental radiograph is of the maxilla
crowns point down
look for the maxillary recess
How do you tell if the dental radiograph is of the mandible
crowns point up
look for mandibular canal and the ventral cortex
Why do you need to know where the maxillary recess is
1) dont want to drill into it
2) dont want to stab elevator into it
3) dont want to push tooth roots into it
the maxillary recess always occur at the
apical portion of the maxillary teeth
T/F: there are no three rooted teeth in the mandible
True
the point where the cementum that covers the root, meets the enamel that covers the crown
the cementoenamel junction
Why is it important to know where the cementoenamel junction is
bone loss -
alveolar bone should be 1-2mm below cementoenamel junction
if you can see the cementoenamel junction on your oral exam, then you know theyve had gingival recession
chevron site
the site on the apex of the tooth where the blood supply is entering the tooth
interradicular bone
the bone between different roots of a tooth
What are the three structures that you need to review when looking at dental radiographs
1) Periodontal ligament
2) Periapical region
3) Tooth apex: where tooth abscesses occur
Where do tooth abscesses occur
tooth apex
how many teeth do dogs have
42
how many teeth do cats have
30
30% of rhinitis cases are caused by
tooth root abscesses
What number is the carnassial tooth of the right mandible in dog
409 (1st mandibular molar)
What number is the carnassial tooth of the left mandible in a dog
309 (1st mandibular molar)
What number is the carnassial tooth of the left maxilla in the dog
208 (4th premolar)
