Development of Cementum

Question 1

When do adjacent epithelial root sheath cells deteriorate and break away?
What does it look like?

Answer 1

• Once dentin forms

- Swiss cheese

Question 2

What happens to epithelial root sheath cells once dentin forms?

Answer 2

They deteriorate and break away (looks like Swiss cheese)

Question 3

What do dental sac cells change into?

Why?

Answer 3

• Cementoblasts

- Openings in the sheath

Question 4

What happens when there are openings in the sheath?

Answer 4

Outside dental sac cells change into cementoblasts

Question 5

How do cementum-forming cells move?

Answer 5

Through holes to begin forming cementum. The CEJ is now formed.

Question 6

The cementum is formed by what layer of dental sac cells?

Answer 6

First

Question 7

What does the first layer of dental sac cells form?

Answer 7

Cementum

Question 8

The periodontal ligament fibers are formed by what layer of dental sac cells?

Answer 8

Second (middle) layer

Question 9

What does the second (middle) layer of dental sac cells form?

Answer 9

Periodontal ligament fibers (Sharpey’s fibers)

Question 10

What happens to the the ends of periodontal ligament fibers?

Answer 10

Embed themselves within cementum and calcify