Development of Enamel Organ

Question 1

The development of the enamel organ leads to the formation of what?

Answer 1

Tooth enamel

Question 2

Tooth enamel is formed by what?

Answer 2

The development of the enamel organ

Question 3

What type of development is the enamel organ?

Answer 3

Ectodermal development

Question 4

What are the three stages of development for the enamel organ?

Answer 4

Bud, cap, and bell

Question 5

What is the first stage of enamel development?

Answer 5

The bud stage

Question 6

What characterizes the bud stage of enamel development?

Answer 6

Thickening of the ten areas of the dental lamina in each arch

Question 7

Describe the tooth bud in the bud stage

Answer 7

• Inferior surface of bud is made up of mesenchymal cells

- Mesenchymal cells reproduce in a downward fashion from the basal layer

Question 8

What are mesenchymal cells?

Answer 8

Cells that will later differentiate into more specialized cells

Question 9

What are cells that make up the bud called at the end of the bud stage?

Answer 9

Dental papilla cells

Question 10

What is the second stage of enamel development?

Answer 10

Cap stage

Question 11

What characterizes the cap stage of enamel development?

Answer 11

A concave area deep within the bud and the differentiation of cells within the dental lamina

Question 12

The thickening of ten areas of the dental lamina in each arch characterize which stage of enamel organ development?

Answer 12

Bud stage

Question 13

A concave area deep within the bud and the differentiation of cells within the dental lamina characterize which stage of enamel organ development?

Answer 13

Cap stage

Question 14

The oral epithelium differentiates into which 3 groups of cells at the end of the cap stage?

Answer 14

• Outer Enamel Epithelium
• Inner Enamel Epithelium
• Stellate Reticulum

Question 15

When does the oral epithelium differentiate into three new groups of cells?

Answer 15

End of the cap stage

Question 16

What is the Outer Enamel Epithelium?

Answer 16

• OEE
• direct continuation of the basal layer of the oral epithelium
• OEE cells protect the enamel organ

Question 17

What is the Inner Enamel Epithelium?

Answer 17

• Direct continuation with the OEE cells

- IEE cells form the enamel organ

Question 18

What is the stellate reticulum?

Answer 18

• Cells contained within the IEE and OEE which originate from the superficial layer of the oral epithelium
• Protect and cushion IEE cells
• Allow nutrients to pass through its loosely packed cells

Question 19

What cells protect the enamel organ?

Answer 19

OEE

Question 20

What cells form the enamel organ?

Answer 20

IEE

Question 21

What cells originate from the superficial layer of the oral epithelium?

Answer 21

Stellate reticulum

Question 22

What cells are a continuation of the basal layer of the oral epithelium?

Answer 22

OEE

Question 23

Where do inner enamel epithelial cells come from?

Answer 23

Continuation of OEE cells

Question 24

What is the third stage of enamel organ development?

Answer 24

Bell

Question 25

What characterizes the bell stage of enamel development?

Answer 25

• Concavity of cap deepens

- Presence of fourth layer of epithelium called the stratum intermedium

Question 26

The concavity of the cap deepening and the presence of a new layer of epithelium characterizes which stage of enamel development?

Answer 26

Bell stage

Question 27

What is the new layer of epithelium that emerges called?

Answer 27

Stratum intermedium

Question 28

Where does the stratum intermedium form?

Answer 28

Between the IEE and the stellate reticulum

Question 29

What is the job of the stratum intermedium?

Answer 29

Provide nourishment and protein for IEE cells

Question 30

Which cells provide nourishment and protein to IEE cells

Answer 30

Stratum intermedium

Question 31

What happens once the bell stage is formed?

Answer 31

IEE cells elongate and change internally to become preameloblasts

Question 32

IEE cells eventually become…?

Answer 32

Preameloblasts