Tooth Development

Question 1

What are teeth composed of?

Answer 1

Pulp,
Cementum,
Dentine,
An Amelodentine junction,
Enamel

Question 2

Composition of enamel?

Answer 2

96% mineral, 1-2% matrix and 2% water

Question 3

Composition of dentine?

Answer 3

70% mineral, 20% matrix and 10% water

Question 4

Composition of Cementum?

Answer 4

65% mineral, 23% matrix and 12% water

Question 5

Composition of Bone?

Answer 5

60% mineral, 25% matrix and 15% water

Question 6

What covers the anatomical crown?

Answer 6

Enamel

Question 7

What is enamel produced by?

Answer 7

Epithelium

Question 8

What is dentine?

Answer 8

Specialised connective tissue

Question 9

What is cementum?

Answer 9

Mineralised connective tissue

Question 10

What does cementum cover?

Answer 10

The tooth root

Question 11

Functions of cementum?

Answer 11

Provides tooth support and is resistant to resorption

Question 12

What does interactions between the epithelium give rise to?

Answer 12

Enamel and the hyaline layer of the root

Question 13

What does interactions between the mesenchyme give rise to?

Answer 13

Dentine, pulp, cementum, peridontium-peridontal ligament and bone

Question 14

When does tooth development begin?

Answer 14

Week 6

Question 15

What are the stages of tooth germ?

Answer 15

Bud, Cap, Bell, Late bell ad Crown

Question 16

When does Bud stage occur?

Answer 16

Week 8

Question 17

What does the inner enamel epithelium form?

Answer 17

Amaloblasts

Question 18

What do amaloblasts produce?

Answer 18

Enamel

Question 19

What does the ectomesenchyme form?

Answer 19

Dental papilla and dental follicle

Question 20

What does the dental papillae form?

Answer 20

Odontoblasts

Question 21

What do the odontoblasts produce?

Answer 21

Dentine and pulp

Question 22

What does the dental follicle produce?

Answer 22

Cementum and bone

Question 23

What is cytodifferentiation?

Answer 23

The process of the dental papilla forming odontoblasts

Question 24

What is mineralisation?

Answer 24

Where predestine mineralised to form dentine

Question 25

What is amelogenesis?

Answer 25

Where the inner enamel epithelium forms ameoblasts

Question 26

What do ameloblasts secrete?

Answer 26

The enamel protein matrix

Question 27

What does the enamel protein matrix undergo?

Answer 27

Immediate mineralisation

Question 28

What is enamel with 30% mineral known as?

Answer 28

Immature enamel

Question 29

What does immature enamel undergo?

Answer 29

Gradual maturation

Question 30

What forms the root of the tooth?

Answer 30

Cementum and dentine

Question 31

What provides the signal for the development of the root?

Answer 31

The root sheath

Question 32

What is enamel made of?

Answer 32

Enamel prism

Question 33

What is the shape of an enamel prism?

Answer 33

Complex key hole

Question 34

What is gnarled enamel?

Answer 34

Where the prisms appear twisted around each other

Question 35

Where is the gnarled enamel found?

Answer 35

At the cusps

Question 36

What does gnarled enamel provide?

Answer 36

Strength

Question 37

What do systematic disturbances cause within the teeth?

Answer 37

Accented lines

Question 38

What is contained within the dentine tubules?

Answer 38

Cell processes, nerves and fluid

Question 39

What aspect of dentine is innervated?

Answer 39

Inner aspect

Question 40

What happens with pulp volume with age?

Answer 40

Decreases

Question 41

What is around the odontoblasts?

Answer 41

Marginal plexus

Question 42

What is the cell free zone?

Answer 42

Plexus of Raschkow