Gaining Access & Removal of Carious Tissue Flashcards Preview

BDS 2: Adult Restorative > Gaining Access & Removal of Carious Tissue > Flashcards

Flashcards in Gaining Access & Removal of Carious Tissue Deck (22)
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1

What type of disease is dental caries?

Reversible but progressive disease

2

What tissues are affected by dental caries?

Affecting dental hard tissues

3

What bacteria initiates dental caries?

Initiated by bacteria in a plaque biofilm

4

What causes the demineralisation of the inorganic component of the teeth?

Fermenting carbohydrates produced by the carious bacteria produce acid which causes demineralisation

5

What causes the destruction of the organic component of the teeth?

Proteolytic destruction of organic component

6

What are some isolation techniques used when removing carious tissue? (4)

- Rubber dam
- Cotton wool roll (children)
- Dry guards
- Aspiration (suction)

7

What are the ideal conditions when detecting caries on a tooth? (6)

- Good vision with magnification
- Good illumination
- Clean tooth surface
- Examine tooth when both wet and dry
- Use a round explorer (not sharp)
- You need TIME!!!

8

Where are the 3 main sites of caries development?

- Pits & fissures/cingulum
- Approximal below contact area between teeth
- Smooth surface (near gingival margin)

9

Explain the histology of each ICDAS score (0-4)

0 - No/Minimal enamel demineralisation

1 - Enamel demineralisation outer 50%

2 - Enamel demineralisation inner 50% through to outer 1/3 dentine

3 - Demineralisation of middle to inner 1/3 dentine

4 - Demineralisation of inner 1/3 dentine towards pulp

10

What do the scores made from bitewing radiographs mean in regards to radiolucency? (0-4)

0 - Sound on bitewing

1 - Radiolucency confined to enamel

2 - Radiolucency in enamel up to EDJ

3 - Radiolucency in enamel and outer half of dentine

4 - Radiolucency in enamel and reaching inner half of dentine

11

Explain what site is being referred to in each of Black's Classifications (I-V)

I - Pits and Fissures caries

II - Posterior inter proximal caries

III - Anterior inter proximal caries

IV - Incisal edge caries

V - Smooth surface caries

12

What is one advantage and one disadvantage of bitewing radiographs?

- Good for inter proximal caries

- Less good for occlusal

13

Which type of radiograph is good for showing occlusal caries?

Dental Panoramic Tomograph

14

What radiographs are taken for assessing apical status of a tooth?

Periapical Radiographs

15

What does a sensibility test determine?

Testing the nerve supply

16

How do you conduct a sensibility test? (3)

- Thermal test (whether or not tooth can feel hot/cold)
- Electronic pulp tester
- Test cavity

17

Explain the steps of the operative phase of caries management (5)

- Gain access
- Identify sound and carious tissue
- Excavate caries
- Modify cavity for restorative material
- Restore

18

What is the importance of enamel preparation when dealing with a carious legion? (3)

- Gain access to full extent of lesion
- Remove demineralised and unsupported enamel
- Create sound peripheral margin to seal with restorative material

19

What is the sequence of dentine removal?

- Identify caries-infected vs caries affected vs sound dentine with a probe
- Identify peripheral extent of caries to EDJ
- Excavate caries from EDJ (clear periphery of lesion)
- Move towards pulp from periphery

20

What is the retention property of a cavity?

Property of a cavity to resist displacement of the restoration in the direction of its placement

21

What is the resistance property of a cavity?

Property of the cavity to resist displacement of the restoration in any other direction

22

What are some other methods of caries removal? (4)

- Air abrasion
- Cavitron
- Carisolv
- Lasers