Chapter 7 J: Caries Classifcation Flashcards
Caries can be classified according to?
- anatomical site
- recurrence
- activity
- speed of progression
- restoration design
- visual findings
- pathway
- surfaces involved
- severity
- WHO
- radiographic findings
- Graham Mount
According to the anatomical site:
- Pit and fissure caries
- Smooth surface caries
- Root caries
Pit and fissure caries occur on the?
Occlusal surface of posterior teeth, buccal and lingual of molars, lingual surfaces of maxillary incisors
Smooth surfaces caries occur on the?
Gingival third of buccal and lingual surfaces and proximal surfaces
When the lesion starts at the exposed root cementum and dentin it’s called?
Root caries
According to recurrence?
- Primary caries
- Recurrent caries
- Residual caries
Primary caries are?
Lesions on unrestored surfaces
Recurrent caries are?
Lesions developing adjacent to fillings and they’re either because of incorrect sealing or plaque trapping because of the restoration
Residual caries are?
Demineralised tissue left in place before filling is placed
According to activity?
- Active
- Inactive/arrested
Active caries?
A progressive lesion
Inactive/arrested caries?
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
According to speed of progression?
- Acute
- Rampant
- Chronic
Acute dental caries?
Travels towards the pulp at a very fast speed
Rampant caries and it’s types:
- 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
- Early childhood caries: caries in primary dentition
- Bottle caries: pattern with 4 maxillary incisors affected
- Xerostomia induced rampant caries: because of radiotherapy, salivary flow is reduced
Chronic dental caries?
Travels towards the pulp very slowly , dark and coloured and hard
According to restoration design?
- classes I-VI
Class VI:
Caries on the gingival third of anterior and cusp tips of posterior teeth without involving any other surface
According to visual findings:
- 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
According to pathway:
How the caries progress:
- Forward
- Backward
Forward caries:
When the caries cone in enamel in larger or of same size as present in dentin
Backward caries:
When spread of caries along DEJ exceeds the adjacent caries in enamel, caries extend from DEJ to enamel
According to surfaces involved:
Simple, compound, complex
According to severity:
Incipient
Moderate
Advanced
Severe
IM AS
Incipient caries:
Involves less than half the thickness of enamel
Moderate caries
Involves more than half the thickness of enamel but doesn’t involve DEJ
Advanced caries:
Involves the DEJ, and less than half the distance to the pulp cavity
Severe caries:
Involves more than half the distance to pulp cavity
According to WHO:
D1-D4
D1:
Clinically detectable enamel lesions with intact surfaces
D2:
Clinically detectable cavities in enamel
D3:
Clinically detectable cavities in dentin
D4:
Lesions extending into the pulp
According to radiographic findings:
E0,E1,E2, D1,D2,D3
E0:
No visible radiographic lesion
E1:
Lesion in outer one half of enamel
E2:
Lesion in inner one half of enamel
D1 radiographic finding:
Lesion in outer third of dentin
D2 radiographic finding:
Lesion in middle third of dentin
D3 radiographic finding:
Lesion in inner third of dentin
According to graham mount:
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
Site 1 sizes:
Pit and fissure
1.1 minimal
1.2 moderate
1.3 enlarged
1.4 extensive
Site 2 sizes:
Contact area
2.1 minimal
2.2 moderate
2.3 enlarged
2.4 extensive
Site 3 sizes:
Cervical region
3.1 minimal
3.2 moderate
3.3 enlarged
3.4 extensive
