Dentin Pulp Complex II

Question 1

What are the 4 layers of the Dental Pulp?

Answer 1

1. Odontoblast layer
2. Cell free zone of Weil
3. Cell rich zone
4. Pulp Core

Question 2

Where does the Dental Pulp arise from?

Answer 2

dental papilla (ectomesenchym)

Question 3

What is the primary cell type in Pulp?

Answer 3

Fibroblasts then odontoblasts

Question 4

what are the components of pulp?

Answer 4

proteoglycans
glycoproteins
water

Question 5

what collagen composes the pulp?

Answer 5

type III and then some type I

Question 6

can OD form gap junctions w/ pulpal fibroblasts?

Answer 6

sure why not

Question 7

can odontoblasts be replaced?

Answer 7

I sure think so!

Question 8

where in the pulp do you find fibroblasts?

Answer 8

pulp core and cell rich zone

Question 9

Where does the vacualr supply of pulp come from?

Answer 9

external carotid and Sup/Inf alveolar arteries

Question 10

there are about ____ per root for the pulp

Answer 10

4-8 arterioules

Question 11

Where is the network connection for the pulp vasculature?

Answer 11

cell free zone

Question 12

Plexus of Raschkow… what is it?

Answer 12

Plexus of nerve fibers in the coronal pulp

Question 13

in the root are there nerver plexus’?

Answer 13

Nope just the crown area… there are however branches of nerves in the root

Question 14

What crainial nerve are teeth inervated by?

Answer 14

trigeminal

Question 15

Where do the sympathetic branches come from?

Answer 15

the superior cervical ganglion

Question 16

Where in the tooth are the nerves most myelinated?

Answer 16

near the root

Question 17

3 theories of dentin sensitivity what are they?

Answer 17

1. Direct innervation
2. Odontoblast nociception
3. tubule fluid conductance (hydrodynamic)