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Radio 2 > Radio Dental Caries > Flashcards

Radio Dental Caries Flashcards

1
Q

Which is more valuable bitewing or periapical?

A

bitewing

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2
Q

Which bitewing is best? PA?

A

posterior, anterior

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3
Q

Classical cone-shaped lesion has base of triangle towards?

A

surface in enamel

DEJ when in dentin

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4
Q 
Proximal caries categories
incipient
moderate
advanced
severe
A

1/2 enamel

1/2 dentin

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5
Q

Occlusal caries categories
incipient
moderate
severe

A

difficult to detect
thin radiolucent line
large cavitation

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6
Q

What are recurrent caries?

A

caries next to existing restoration

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7
Q

Radiation caries induced by? Usually affects where?

A

lack of salivary flow

cervical region

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8
Q

How much % demineralization needed to detect?

A

30-50%

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9
Q

geometry of what affects signal to noise?

A

beam and lesion

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10
Q

Lesion is more visible if central ray how aligned with lesion?

A

goes through long axis of lesion

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11
Q

5 caries imitators

A 
Cervical burnout
Mach bands
Composite restorations
Attrition
Toothbrush abrasion
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12
Q

Degree offset of PA and bitewing?

A

PA - 25

BW - 5

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13
Q

Normally alveolar crest how related to CEJ?

A

in line with CEJ and 0.5-2mm down

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14
Q

Normally aveolar crest how related to lamina dura?

A

sharp angle

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15
Q

Horizontal bone loss is what

A

loss in height that is still horizontal

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16
Q

Horizontal bone loss levels

A

Mild - 1-2mm
Moderate - 2mm to half
Severe - over half

17
Q

Vertical bone loss is what

A

loss bone so crest not parallel to CEJ lines

18
Q

Periodontitis classifications for radiographs

A

mild - 1/3
moderate - 1/3-2/3
severe - >2/3

19
Q

Can radiographs detect pocket depths?

A

no

20
Q

Aggressive periodontitis occurs in what ages, loss how much faster? Consistent with local factors?

A
21
Q

Aggressive periodontitis affects what bone most? Bilateral or unilateral?

A

Crestal bone of first molars and incisors

Bilateral symmetrical

22
Q

Aggressive periodontitis has been associated with what dysfunction?

A

neutrophil dysfunction

23
Q

Diseases that influence course of perio disease (4)

A

Diabetes
Hematologic diseases (leukemia)
Genetic conditions (downs, hypophosphatasia)
AIDS

24
Q

4 local contributing factors to perio

A
  1. Occlusal trauma
  2. Tooth mobility
  3. open contacts
  4. Local irritating factors
25
Q

How do differentiate between cervical burnout and caries?

A

appear the same, but cervical burnout common in cone teeth in cervical 1/3. Explorer will be smooth

26
Q

How to differentiate Mach bands?

A

will be the whole restoration border, not just one part

27
Q

Composite restoration vs caries?

A

composite will be well-defined

28
Q

attrition vs caries?

A

attrition will be on more than one tooth.

29
Q

Abfraction?

A

well defined continuous line

Radio 2 (5 decks)

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