Reactions of Dentine-Pulp Complex Flashcards Preview

BDS 2: Adult Restorative > Reactions of Dentine-Pulp Complex > Flashcards

Flashcards in Reactions of Dentine-Pulp Complex Deck (25)
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1

What common ancestry do dentine and pulp both share?

Dental papilla

2

What type of collagen does dentine contain?

Type I collagen

3

What types of collagen does pulp contain?

- Type I
- Type III
- Type V

4

Why does peripheral dentine not contain Type IV collagen?

Peripheral dentine does not have a basement membrane so no Type IV collagen

5

Does dentine contain fibronectin?

No

6

What is the concept of the dentine pulp complex?

Dentine pulp complex is a dynamic tissue that responds mechanical, bacterial and chemical stimuli as a functional unite

7

What is dentine?

Dentine is a living tissue with a high water content that can react to changes in its environment

8

Which is the only tissue in the tooth that is innervated? (have nerve supply)

Dentine

9

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-

10

What is primary dentine formed by?

Primary dentine is formed by the odontoblasts during the development of the tooth

11

When is secondary dentine laid down?

Odontoblasts continue to deposit secondary dentine slowly throughout the life of the tooth

12

What are odontoblast processes?

Dentinal tubules in the inner part of dentine contain extensions of cells from the pulp called odontoblast processes

13

What is dentinal fluid?

What is it derived from?

- Fluid found in dentinal tubules

- Derived from the pulpal extracellular fluid

14

What do pulpal blood vessels do?

Supply nutrients and structural materials to dentine

15

Do humans have pulpal blood vessels?

No

16

What do pulpal nerves do? (2)

- Mediate dentine sensitivity
- Regulating secondary and tertiary dentine deposition

17

When may dentine become an inert tissue incapable of any response or repair? (2)

- If dental pulp dies
- Removed in endodontic treatment

18

What implications may arise from dentine becoming an inert tissue (non-vital state)? (2)

- Tooth discolours
- Tooth may fracture under masticatory forces

19

What is the main aim of the dentine-pulp complex reaction?

Reducing the permeability of dentine

20

What may be the fate of odontoblasts and other pulpal cells beneath the lesion, if injury becomes extensive?

May kill the odontoblasts and other pulpal cells beneath the lesion

21

Following death of odontoblasts due to injury what cells may take it place?
What do they do?

Odontoblast-like cells that secrete a reparative tertiary dentine

22

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-

23

The use of cutting burs produce vibrations, what does this cause in terms of fluid?

Causing continuous inward and outward fluid shifts

24

What is a consequence of continuous inward and outward fluid shifts?

- Barrage of hydrodynamic stimuli across the dentine into the dental pulp
- Which causes pain

25

What may arise if dentine after treatment is not sealed well? (2)

- Micro-leakage within the restoration
- Acute pulpal reactions into chronic stage due to
micro-organisms and their products