Chapter 7 J: Caries Classifcation

Question 1

Caries can be classified according to?

Answer 1

• anatomical site
• recurrence
• activity
• speed of progression
• restoration design
• visual findings
• pathway
• surfaces involved
• severity
• WHO
• radiographic findings
• Graham Mount

Question 2

According to the anatomical site:

Answer 2

1. Pit and fissure caries
2. Smooth surface caries
3. Root caries

Question 3

Pit and fissure caries occur on the?

Answer 3

Occlusal surface of posterior teeth, buccal and lingual of molars, lingual surfaces of maxillary incisors

Question 4

Smooth surfaces caries occur on the?

Answer 4

Gingival third of buccal and lingual surfaces and proximal surfaces

Question 5

When the lesion starts at the exposed root cementum and dentin it’s called?

Answer 5

Root caries

Question 6

According to recurrence?

Answer 6

1. Primary caries
2. Recurrent caries
3. Residual caries

Question 7

Primary caries are?

Answer 7

Lesions on unrestored surfaces

Question 8

Recurrent caries are?

Answer 8

Lesions developing adjacent to fillings and they’re either because of incorrect sealing or plaque trapping because of the restoration

Question 9

Residual caries are?

Answer 9

Demineralised tissue left in place before filling is placed

Question 10

According to activity?

Answer 10

1. Active
2. Inactive/arrested

Question 11

Active caries?

Answer 11

A progressive lesion

Question 12

Inactive/arrested caries?

Answer 12

A lesion that may have formed earlier and then stripped, it’s a large open cavity that no longer retains food and becomes self cleansing, normally dark coloured, hard, and almost shiny

Question 13

According to speed of progression?

Answer 13

1. Acute
2. Rampant
3. Chronic

Question 14

Acute dental caries?

Answer 14

Travels towards the pulp at a very fast speed

Question 15

Rampant caries and it’s types:

Answer 15

• multiple active lesions in the same patient, usually due to poor oral y GI e and a lot of cariogenic snacks and sweet drinks consumption, or with hyposalivation

1. Early childhood caries: caries in primary dentition
2. Bottle caries: pattern with 4 maxillary incisors affected
3. Xerostomia induced rampant caries: because of radiotherapy, salivary flow is reduced

Question 16

Chronic dental caries?

Answer 16

Travels towards the pulp very slowly , dark and coloured and hard

Question 17

According to restoration design?

Answer 17

• classes I-VI

Question 18

Class VI:

Answer 18

Caries on the gingival third of anterior and cusp tips of posterior teeth without involving any other surface

Question 19

According to visual findings:

Answer 19

• at occlusal surface:
  0: no or slight changes in enamel translucency after prolonged air drying
  1. Opacity hardly visible on the wet surface, but distinctly visible after air drying
  2. Opacity (white or yellow) distinctly visible without air drying
  3. Localised enamel breakdown in opaque or discoloured enamel and/or greyish discolouration from underlying enamel
  4. Cavitation in opaque or discoloured enamel exposing the dentin beneath

Question 20

According to pathway:

Answer 20

How the caries progress:

1. Forward
2. Backward

Question 21

Forward caries:

Answer 21

When the caries cone in enamel in larger or of same size as present in dentin

Question 22

Backward caries:

Answer 22

When spread of caries along DEJ exceeds the adjacent caries in enamel, caries extend from DEJ to enamel

Question 23

According to surfaces involved:

Answer 23

Simple, compound, complex

Question 24

According to severity:

Answer 24

Incipient
Moderate
Advanced
Severe

IM AS

Question 25

Incipient caries:

Answer 25

Involves less than half the thickness of enamel

Question 26

Moderate caries

Answer 26

Involves more than half the thickness of enamel but doesn’t involve DEJ

Question 27

Advanced caries:

Answer 27

Involves the DEJ, and less than half the distance to the pulp cavity

Question 28

Severe caries:

Answer 28

Involves more than half the distance to pulp cavity

Question 29

According to WHO:

Answer 29

D1-D4

Question 30

D1:

Answer 30

Clinically detectable enamel lesions with intact surfaces

Question 31

D2:

Answer 31

Clinically detectable cavities in enamel

Question 32

D3:

Answer 32

Clinically detectable cavities in dentin

Question 33

D4:

Answer 33

Lesions extending into the pulp

Question 34

According to radiographic findings:

Answer 34

E0,E1,E2, D1,D2,D3

Question 35

E0:

Answer 35

No visible radiographic lesion

Question 36

E1:

Answer 36

Lesion in outer one half of enamel

Question 37

E2:

Answer 37

Lesion in inner one half of enamel

Question 38

D1 radiographic finding:

Answer 38

Lesion in outer third of dentin

Question 39

D2 radiographic finding:

Answer 39

Lesion in middle third of dentin

Question 40

D3 radiographic finding:

Answer 40

Lesion in inner third of dentin

Question 41

According to graham mount:

Answer 41

Based on localisation and size

Size 1: minimal
Size 2: moderate
Size 3: enlarged
Size 4: extensive

Site 1: pit and fissure
Site 2: contact area
Site 3: cervical region

Question 42

Site 1 sizes:

Answer 42

Pit and fissure
1.1 minimal
1.2 moderate
1.3 enlarged
1.4 extensive

Question 43

Site 2 sizes:

Answer 43

Contact area
2.1 minimal
2.2 moderate
2.3 enlarged
2.4 extensive

Question 44

Site 3 sizes:

Answer 44

Cervical region
3.1 minimal
3.2 moderate
3.3 enlarged
3.4 extensive