1. Classification of caries, clinical form, location, morphology and progression.

Question 1

I. Classifications of caries
1. What are the 2 Classifications of caries?

Answer 1

1/ According to its clinical form
2/ Progression

Question 2

I. Classifications of caries
1. How do we classify caries according to its CLINICAL FORM?

Answer 2

1/ Localization of the lesion
- Coronal caries:
+) Fissura
+) Superficial (contact point lesion, smooth surface lesion)
- Root caries

2/ Morphology of the lesion
- Enamel caries
- Cement caries
- Dentin caries

Question 3

I. Classifications of caries
1A. Characteristics of enamel caries (Morphology of the lesion)

Answer 3

◦Macroscopically

‣ In case of a superficial caries
=> Reversible spot lesion without macroscopic destruction

‣ In case of a fissure caries
=> Whitish-yellowish or brownish-blackish discoloration

Question 4

I. Classifications of caries
1B. Characteristics of cement caries (Morphology of the lesion)

Answer 4

Caries arising on the root surface, manifesting in most cases at the cemento-enamel junction

Question 5

I. Classifications of caries
1C. Characteristics of dentine caries (Morphology of the lesion)

Answer 5

Dentine caries contain 5 zones
1. Zone of destruction
2. Zone of Bacterial Invasion
3. Zone of Demineralisation
4. Sclerotic (also known as Translucent Zone)
5. Tertiary Dentine (also known as Reactive Dentine)

Question 6

I. Classifications of caries
2A. How do we classify caries according to its PROGRESSION?

Answer 6

• Caries progression in time
  1/ Caries rapida (rampant caries)
  2/ Caries tarda (arsted caries)
• Depth of the lesion
  1/ Caries incipiens
  2/ Caries superficialis
  3/ Caries media
  4/ Caries profunda
  5/ Caries penetrans

Question 7

I. Classifications of caries (according to its PROGRESSION in time)
2B. Characteristics of Caries rapida (rampant caries) and Caries tarda (arsted caries)?

Answer 7

• Caries rapida (rampant caries): Acute, rapid course
• Caries tarda (arsted caries): Chronic, indolent

Question 8

I. Classifications of caries (according to its PROGRESSION - Depth of the lesion)
2C. Characteristics of Caries incipiens

Answer 8

No macroscopic material loss

Question 9

I. Classifications of caries (according to its PROGRESSION - Depth of the lesion)
2D. Characteristics of Caries superficialis

Answer 9

Macroscopic metrial loss is localised onto the enamel

Question 10

I. Classifications of caries (according to its PROGRESSION - Depth of the lesion)
2E. Characteristics of Caries media

Answer 10

Cavitation is involving dentin but a hard dentin layer exists between the pulp and the lesion

Question 11

I. Classifications of caries (according to its PROGRESSION - Depth of the lesion)
2F. Characteristics of Caries profunda

Answer 11

The lesion is separated from the pulp by a thin dentin layer

Question 12

I. Classifications of caries (according to its PROGRESSION - Depth of the lesion)
2G. Characteristics of Caries penetrans

Answer 12

The lesion penetrates the pulp