Formation of Dental Tissues - Crown

Question 1

What does the Inner Enamel Epithelium (IEE) elongate to become?

Answer 1

Preameloblasts

Question 2

What is repolarization of preameloblasts?

Answer 2

The process of the nuclei moving away from the basement membrane.

Question 3

What do the outermost cells of the dental papilla become?

Answer 3

Odontoblasts

Question 4

When do the odontoblasts repolarize?

Answer 4

When they become aware of the preameloblasts repolarizing.

Question 5

What type of matrix is secreted by the odontoblasts?

Answer 5

A collagenous matrix.

Question 6

During apposition what will the matrix secreted by odontoblasts create?

Answer 6

predentin

Question 7

During maturation what will the matrix secreted by the odontoblasts create?

Answer 7

dentinogenesis

Question 8

What is happening to the basement membrane as the matrices form?

Answer 8

It disintegrates

Question 9

What happens to the preameloblasts before they secrete a matrix?

Answer 9

They become ameloblasts

Question 10

What type of matrix is secreted by the ameloblasts?

Answer 10

A protein matrix

Question 11

What is formed after the addition of hydroxyapatite to the protein matrix from ameloblasts?

Answer 11

Enamel is formed

Question 12

What is the formation of dentin called?

Answer 12

Dentinogenesis

Question 13

What is the formation of enamel called?

Answer 13

Amelogenesis

Question 14

In amelogenesis what processes are associated with the formation of the protein matrix?

Answer 14

Tomes processes

Question 15

True or False; the formation of the matrix in amelogenesis is in response to the formation of the dentin matrix.

Answer 15

True

Question 16

During the maturation stage of amelogenesis what represents the daily process of the development of enamel?

Answer 16

Striae of Retzius

Question 17

True or False; Striae of Retzius can be seen microscopically.

Answer 17

True

Question 18

How is the DEJ formed?

Answer 18

Mineralization of the Basement Membrane

2.

Question 19

What happens to the junction as the basement membrane is disintegrated?

Answer 19

It becomes scalloped making a greater surface area.

Question 20

What is the significance of the larger surface area for the junction of enamel and dentin?

Answer 20

The greater the surface area the stronger the union.

Question 21

What happens to odontoblasts?

Answer 21

Many will survive after dentinogenesis next to the pulp.

Question 22

What happens to ameloblasts?

Answer 22

Will be lost aft the eruption of the tooth.