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A Restorative dentistry > W3 Caries > Flashcards

W3 Caries Flashcards

1
Q

I. What is the definition of caries?

A
  1. Dental caries is an infectious microbiological disease of the teeth that results in localised dissolution and destruction of the calcified tissues.
  2. Demineralisation – under pH 5.5
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2
Q

II. Etiology of caries
1. What are the 4 causes of caries?

A
  1. Plaque
  2. Cariogenic bacteria
  3. Sugar
  4. Fissure draw
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3
Q

II. Etiology of caries
2. Why is Plaque the cause of caries?

A
  1. Plaque predilection places
    – Pit and fissures
    – Smooth surface –
    under the contactpoints
    – Gingival third on vestibular/
    lingual surface
    – Root surface – old age
  2. Supragingival plaque
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4
Q

II. Etiology of caries
3. List 2 examples of bacteria that cause caries

A
  1. Streptococcus mutans
  2. Lactobacilli
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5
Q

II. Etiology of caries
4. Why is sugar the cause of caries?

A

Sugar – break down - acidic attack

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6
Q

II. Etiology of caries
5. Why is fissure draw the cause of caries?

A
  1. Easy to clean
  2. Difficult to clear
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7
Q

II. Etiology of caries
6. Identify

A
  1. Substrate
  2. Time
  3. Host
  4. Microorganism
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8
Q

III. Types of caries
1. What are the 3 types of caries?

A
  1. Enamel
  2. Dentin
  3. Cement
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9
Q

III. Types of caries
2. How are primary caries formed?

A

It is originally formed on an intact tooth surface

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10
Q

III. Types of caries
3. How are secondary caries formed?

A

They begins along the edge of the restoration (fillings, inlays, crowns) anchored in the tooth, in case of its incorrect edge closure

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11
Q

III. Types of caries
4. What are the 6 types of caries based on spatial progression of caries?

A
  1. Caries incipiens
  2. Caries superficialis
  3. Caries media
  4. Caries profunda
  5. Caries penetrans
  6. Arrested caries
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12
Q

III. Types of caries
5A. Describe Caries incipiens

A

white spot – no cavity – remineralizable

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13
Q

III. Types of caries
5B. Describe Caries superficialis

A

localizes - enamel

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14
Q

III. Types of caries
5C. Describe Caries media

A

progression in the dentine

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15
Q

III. Types of caries
5D. Describe Caries profunda

A

deep caries lesion, pulp demarkated

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16
Q

III. Types of caries
5E. Describe Caries penetrans

A

reach the pulp

17
Q

III. Types of caries
5F. Describe Arrested caries

A

– remineralized – darker
- only incipient caries!

18
Q

III. Types of caries
6. What are the 4 zones of incipient caries?

A
  1. Surface zone
    - Opaque
    - remineralized
  2. Body of the lesion
    - High porosity
    - Less minerals
  3. Dark zone
  4. Translucent zone
19
Q

III. Types of caries
7. What are the 5 zones of dentinal caries?

A
  1. Infected dentine
  2. Turbid dentine
  3. Transparent dentin
  4. Subtransparent dentin
  5. Normal dentine
20
Q

III. Types of caries - Zones of dentinal caries
8A. Describe infected dentin zone

A

outer carious dentin

21
Q

III. Types of caries - Zones of dentinal caries
8B. Describe Turbid dentin zone

A
  • Bacteria reach
  • Decreased mineral content
  • Destroyed collagen
22
Q

III. Types of caries - Zones of dentinal caries
8C. Describe Transparent dentin zone

A
  • Loss of mineral from the intertubular dentin
  • Free from bacteria
  • Intact collagen
  • inner carious dentin
23
Q

III. Types of caries - Zones of dentinal caries
8D. Describe Subtransparent dentin zone

A

remineralization

24
Q

III. Types of caries - Zones of dentinal caries
8E. Describe Normal dentin zone

A

reparative dentin

25
Q

III. Types of caries
9. What are the types of caries based on the enamel prism localization?

A
  1. Pit and fissure
  2. Smooth surface
26
Q

III. Types of caries
10. Describe rampant caries

A
  • Children – „baby bottle” caries
  • Very fast
  • White color (caries alba)
  • Soft pulpy mass (caries humida)
27
Q

III. Types of caries
11. Describe caries tarda

A
  • Old patients
  • Slow progression
  • Drier and harder (caries sicca)
  • Dark brown, black (caries nigra)
28
Q

III. Types of caries
12. How do root caries occur?

A

For root caries to occur, the root of the tooth must be exposed.

29
Q

IV. What are indices of caries?

A

– DMF-T, DMF-S
– D/d – decayed; M/m – missing; F/f - filled
– dmf, df, def – primary teeth e – extraction indication – T – tooth; S - surface
– RCI – root caries index

A Restorative dentistry (10 decks)

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