ICP9 - Dentine Pulp Complex

Question 1

Chemical Differences between Dentine and Dental Pulp

Answer 1

• Dentine Collagen Type I VS Pulp collage Type I, III and V
• ## Dentine has no Fibronectin

Question 2

What is interlobular Dentine?

Answer 2

Micrometer diameter tubules surrounded by highly mineralised peritubular dentine embedded within partially mineralised collagen matrix

Question 3

What is Primary dentine is formed by?

Answer 3

Odontoblasts during the development of the tooth

Question 4

Odontoblasts continually deposit what throughout the life of the tooth?

Answer 4

Secondary Dentine

Question 5

What is tertiary dentine?

Answer 5

Dentine laid down rapidly on the pulpal aspect of areas of occlusal wear or diseases

Question 6

What do pulpal blood vessels do?

Answer 6

They supply nutrients and structural materials to dentine

Question 7

What do Pulpal nerves do?

Answer 7

Control dentine sensitivity and may regulate secondary and tertiary dentine deposition

Question 8

When does dentine become an inert tissue incapable of response or repair?

Answer 8

When the dental pulp dies or is removed

- Tooth often becomes discoloured

Question 9

What are dentine-pulp complex reactions to the stimulus aimed at reducing?

Answer 9

Permeability of Dentine

Question 10

What can in and out fluid shifts cause?

Answer 10

Hydronamic stimuli across the dentine into the dental pulp, causing pain if not anaesthetised.
- Could cause local pulpal neurogenic inflammation