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BDS2 Caries Symposium > Caries Symposium 6 > Flashcards

Caries Symposium 6 Flashcards

1
Q

What is meant by D1 when classifying caries?

A
  • All visible detectable lesions

- Enamel only

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2
Q

What is meant by D3 when classifying caries?

A
  • Lesions extending into the dentine
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3
Q

What does D2 mean when describing caries classification?

A
  • Clinically detectable ‘cavities’ limited to enamel

- PLUS clinically detectable enamel lesions with intact surfaces

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4
Q

How can caries be classes by cavitation?

A
  • Cavitated

- Not-cavitated (should be able to remineralise)

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5
Q

A sharp instrument should not be used to probe a cavity as this may make the cavity worse. Instead what should be used?

A
  • If want to se anything should use a ball ended probe or a perio probe and do not push into it
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6
Q

How can caries be classified by activity?

A
  • Active (demineralising)

- Inactive (remineralising)

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7
Q

How can caries be classified by site?

A
  • Smooth surface
  • Occlusal (most common type especially in upper 6’s)
  • Root surface (if get recession and dentine is exposed)
  • Approximal
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8
Q

How can caries be classified by location?

A
  • Primary (de novo - from the beginning)

- Secondary - adjacent to a previous restoration

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9
Q

What are the 5 ways caries can be classified?

A
  • Extent
  • Cavitation
  • Activity
  • Site
  • Location
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10
Q

You can use ‘surfaces’ as a scoring system for caries diagnosis. What does this mean?

A
  • Each surface is considered separately
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11
Q

You can use ‘tooth’ as a scoring system for caries diagnosis. What does this mean?

A
  • The worst surface of the tooth dictates the tooth code
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12
Q

For caries diagnosis what does accuracy measure?

A
  • Measures what is claimed
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13
Q

What is meant by ‘sensitivity’ in the accuracy of caries diagnosis?

A
  • % of disease found correctly

- So if there’s 2 decayed teeth and you find only 1 of them then your sensitivity is 50%

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14
Q

What is meant by ‘specificity’ in the accuracy of caries diagnosis?

A
  • % of healthy teeth found correctly

- If there are 30 healthy teeth and you find 28 then that’s 28/30 as a percentage, so 93%

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15
Q

What are the basic condidions needed for a good clinical exam? (4 points)

A
  • Good light
  • Dry the tooth
  • Take your time (and do systematically)
  • Don’t use a sharp probe
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16
Q

When doing a normal examination what is the sensitivity and specificity of identifying D1 caries class teeth?

A
  • Sensitivity = 0.32

- Specificity = 0.97

17
Q

When doing a normal examination what is the sensitivity and specificity of identifying D3 caries class teeth?

A
  • Sensitivity = 0.34

- Specificity = 0.99

18
Q

What can we use to improve the accuracy of correct caries diagnosis?

A
  • ICCMS (International Caries Classification and Management System)
  • Radiographs
  • Magnification
  • FOTI (fibre optic trans-illumination)
19
Q

When doing an ICCMS examination what is the sensitivity and specificity of identifying D1 caries class teeth?

A

Sensitivity = 0.65

Specificity = 0.85

20
Q

When doing an ICCMS examination what is the sensitivity and specificity of identifying D3 caries class teeth?

A

Sensitivity = 0.8

Specificity = 0.8

21
Q

What are the advantages and disadvantages of using radiographs in caries diagnosis?

A

Advantages

  • Permanent record

Disadvantages

  • Ionising radiation
  • Not very good for all surfaces
  • Good for seeing approximal areas but not so good for occlusal surfaces and so occlusal caries identification
22
Q

When doing a caries diagnosis examination using bitewing radiographs, what is the sensitivity and specificity of identifying approximal D1 caries class teeth?

A

Sensitivity = 0.31

Specificity = 0.87

23
Q

When doing a caries diagnosis examination using bitewing radiographs, what is the sensitivity and specificity of identifying approximal D3 caries class teeth?

A

Sensitivity = 0.57

Specificity = 0.95

24
Q

What are the advantages and disadvantages of using magnification in caries diagnosis?

A

Adavntages

  • Easy

Disadvantages

  • Takes a while to get used to
  • Field of view gets much smaller
25
Q

When doing a caries diagnosis examination using magnification, what is the sensitivity and specificity of identifying D1 caries class teeth?

A

Sensitivity = 0.42

Specificity = 0.94

26
Q

When doing a caries diagnosis examination using magnification, what is the sensitivity and specificity of identifying D3 caries class teeth?

A

Sensitivity = 0.37

Specificity = 0.99

27
Q

What are other techniques that can be used to diagnose caries? (3 points)

A
  • Fibre-optic trans-illumination
  • DIAGNOdent
  • Electrical techniques

BDS2 Caries Symposium (5 decks)

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