Types of dentine

Question 1

Describe where mantle dentine is found

Answer 1

Directly below the Enamel

Question 2

Describe where circumpulpal dentine is

Answer 2

The rest of the Dentine that is not the mantel

Question 3

Describe what Regular Secondary Dentine is

Answer 3

Gradually Fills the pulp (boundary marked by change in direction of tubules)

Question 4

Describe Irregular Secondary Dentine

Answer 4

Thicker than normal dentine. forms around the pulpal surface to protect from acid and bacterial toxins.

Question 5

Describe Peritubular dentine

Answer 5

Hypermineralised dentine that fills the tubules. natural aging process. Can be used to age teeth. Happens quickly if damaged.

Question 6

Describe where intertubular dentine

Answer 6

forms a meshwork like matrix with collagen around the tubules.

Question 7

Describe Sclerotic Dentine

Answer 7

dentine in tubules becomes translucent due to ageing or injury. translucency is caused by. due to peritubular and intertubular dentine having the same refractive index.

Question 8

Describe Reparative Dentine

Answer 8

When all odontoblast cells are killed, similar cells specialise and migrate to the pulpal surface, coating it in a bone like material

Question 9

Where is the plexus of raschkow found?

Answer 9

located beneath the cell rich zone. unmyelinated nerve cells travel up to the odontoblasts