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BDS2 CDS caries symposium > 6 diagnosis & classification > Flashcards

Flashcards in 6 diagnosis & classification Deck (26)
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1

what are the 5 methods of classifying caries?

extent
cavitation
activity
site
location

2

what extent is D1?

all visually detectable lesions

3

what extent is D3?

lesions extending into dentine

4

how is caries classified by cavitation?

cavitated
not cavitated

5

how to determine a cavity in an exam?

run a ball-ended probe over area w/ potential cavitation
if catch felt-cavitated

6

how is caries classified by activity?

active
-demineralising
inactive
-remineralising

7

how does an inactive lesion look?

shiny
clean
no plaque

8

how is caries classified by site?

smooth surface
-buccal, labial, lingual
occlusal
-w/i fissures
root surface
-purely dentine
approximal
-smooth surface unreachable i.e interproximal

9

how is caries classified by location?

primary
secondary
-adjacent to a restoration

10

how are caries scored?

DMFS
-surfaces
-each surface considered separately
DMFT
-worst surface dictates tooth code

11

what dictates reliability?

accuracy and precision

12

what is accuracy?

measures what is claimed

13

what is precision?

consistency of measurement

14

what are the branches of accuracy?

sensitivity
specificity

15

what is sensitivity?

% of disease found correctly

16

what is specificity?

% of health found correctly

17

what is the relationship between sensitivity and specificity?

as sensitivity increases specificity decreases

18

what are the basics needed for a good exam?

good light
dry the tooth
take your time
don't use a sharp probe

19

what fraction of caries are detected by a clinicial?

1/3

20

what fraction of caries are correctly detected?

0.97
-meaning unnecessary trauma avoided

21

how can accuracy be improved?

ICCMS
-international caries classification management system
radiographs
magnification
FOTI
-fibre optic trans illumination

22

what are the advantages of radiographs?

in all practices
accurate
quick
go on permanent record

23

what are the disadvantages of radiographs?

ionising radiation
hard to standardise
type depends on caries
bitewings>periapicals>OPT

24

what is the advantage of magnification?

simple- loupes

25

what are the disadvantages of magnification?

time to get used to
cost

26

what other techniques are available to increase accuracy?

fibre-optic transillumination
diagnodent
-laser based red light
electrical techniques