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Small Animal Primary Care > Dental radiograph > Flashcards

Dental radiograph Flashcards

1
Q

What is the standard care for dental radiographs

A
  • full mouth radiograph on every patient at every dental when periodontal disease is present
  • radiograph both prior and post extraction
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2
Q

Dental radiograph analog

A
  • silver halide films
  • more time consumiing
  • re-take needed
  • chmically messy and require proper handling & storage
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3
Q

DR digital radiography system

A
  • sensor plate (expensive)
  • fast image aquisition
  • sensor plate cumbersome with limited flexibility
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4
Q

CR digital radiography system

A
  • phosphor plate w/ wide range plate size
  • flexible for positioning easily
  • image saved in the phosphor and become visible when put through Scan-X system
  • repositioning of the entire plate necessary
  • plate degrades overtime and are susceptible to scratches
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5
Q

What will affect the quality of the dental radiograph?

A
  • positioning of the patient
  • exposure
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6
Q

What can be the reason for the dental radiographs to be too dark?

A
  • overexposure
  • overdevelopment
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7
Q

What can cause the image to be too light?

A
  • underexposure
  • underdevelopment
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8
Q

What can cause dental radiographs to be blurred?

A
  • movement of patient
  • movement of the tube
  • movement of film
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9
Q

The 3 important planes/ axis

A
  • film/ sensor plate
  • tooth
  • xray beam
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10
Q

Why are radiographing the maxillary premolar/molars more challenging?

A

need bisecting angle to separate the mesial root of the triple rooted teeth

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11
Q

What is the bisecting angle technique?

A

creating a bisecting line between the angle of the xray plate and the tooth
- xray beam should be perpendicular to line

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12
Q

What causes foreshortening of the image?

A

vertical angle too large

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13
Q

What causes elongation?

A

vertical angle too small

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14
Q

Degree required to take canine radiograph

A

45 degree

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15
Q

Degree required to take maxillary molar/ premolar radiograph?

A

50-60 degree (tubehead directed caudal to rostral

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16
Q

Techniques for radiographing mandibular canines & incisors

A
  • patient in dorsal
  • plate flat in mouth
  • tube head angle 70 degrees
  • beam directed in rostral to caudal oblique for canine teeth
17
Q

Techniques to radiograph premolar &molar in the mandible

A

parallel technique

18
Q

Why are the rostral mandibular premolars difficult to take with the parallel technique?

A

symphysis

19
Q

What are some normal anatomy of the teeth?

A
  • periapical lucency of canine
  • mental foramen
  • mandibular canal
  • palatine fissure
  • mandibular symphysis
20
Q

Why can peri-apical lucency of the canine visible on the radiograph?

A

chevron effect

21
Q

What does the mandibular canal contain?

A

inferior alveolar artery, vein, & nerve

22
Q

What are mandibular symphysis composed of?

A

fibrocartilaginous tissue

23
Q

What is pupal calcification?

A

pulp stone in the colonal pulp

24
Q

What to do if unsure whether something on the teeth is normal when taking dental rads?

A
  • look at contralateral radiograph
  • slightly change angle of radiograph
  • submit radiograph to specialist
  • recommend repeat radiograph in 3,6, or 12 months
25
Q

What is horizontal bone loss?

A
  • most common
  • generalized across the arcade
  • secondary to periodontal disease and host due to inflammatory response to bacterial infection
  • expose furcation
26
Q

What is vertical bone loss?

A
  • loss of bone adjacent to tooth root
  • lead to earlier onset of motility
27
Q

What is periapical abscess?

A
  • lucency around tooth root
  • result of endodontic disease (tooth non-vitality or inflammation)
28
Q

Where does periapical abscess commonly occur?

A

4th upper premolar, 1st upper molar & 1st mandibular molar

29
Q

what causes pulpitis?

A

mechanical trauma to the tooth

30
Q

What causes tooth fractures?

A

chewing on hard objects

31
Q

Main concern of tooth fracture

A

pulp exposure & pain

32
Q

What causes retained root?

A
  • result from excessive force during extraction
  • extreme tooth weakness
  • ankylosis
33
Q

What causes dentigerous cysts?

A

unerupted tooth

34
Q

What can dentigerous cyst cause?

A
  • fluid-filled cyst
  • can cause considerable local bone destruction
35
Q

What breed is predisposed to dentigerous cyst?

A

brachycephalic breed

36
Q

Characteristics of ameloblastoma

A
  • destroys periodontiumof adjacent teeth
  • can differentiate from dentigerous cyst via gross appearance ( proliferation of gingiva)

Small Animal Primary Care (8 decks)

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