14295_CH7DentalAnatomy Flashcards Preview

NAVEDTRA 14295B HOSPITAL CORPSMAN > 14295_CH7DentalAnatomy > Flashcards

Flashcards in 14295_CH7DentalAnatomy Deck (97)
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1

Three developmental periods?

Growth, Calcification, Eruption

2

Dental development begins?

5th/6th week - prenatal

3

Horseshoe shaped band?

Dental lamina

4

Growth period of development?

Bud, Cap, Bell

5

# of buds per dental arch?

Usually 10

6

Buds for permanent teeth form when?

17 weeks - 5 yrs

7

Cap stage also known as?

Proliferation

8

Small nipple shaped elevation?

Dental papilla

9

Last period of growth?

Histodifferentiation or bell stage

10

Cells that form enamel?

Ameloblast

11

Cells that form dentin?

Odontoblast

12

Cells that form cementum?

Cementoblast

13

Tooth takes shape through _______ in the _______ phase?

Morphodifferentiation, Bell

14

Depositing of the matrix?

Apposition

15

Crown completion to tooth emerging?

3yrs (perm teeth)

16

Study of anatomy?

Histology

17

Tooth divided into how many parts?

2 : crown, root(s)

18

Crown divided into?

Anatomic, Clinical crown

19

Four or more roots?

Multirooted

20

Opening for blood/nerves?

Apical foramen

21

Covers anatomic crown and protects dentin?

Enamel

22

Enamel composition?

96% inorganic, 1% organic, 3% water

23

Enamel can endure how much crushing pressure?

1,000 lbs per sq inch

24

Enamel is composed of?

Millions of enamel rods or prisms

25

Constitutes largest portion of the tooth?

Dentin

26

Dentin is harder than ____ but softer than ______?

Bone, enamel

27

Dentin makeup?

70% inorganic, 30% organic and water

28

Covers roots of teeth?

Cementum

29

Cementum color?

light yellow (lighter than dentin)

30

Cementum makeup?

55% organic, 45% inorganic (mainly calcium & salt)