Dental Lamina and Enamel Organ Flashcards Preview

Histology > Dental Lamina and Enamel Organ > Flashcards

Flashcards in Dental Lamina and Enamel Organ Deck (28):
1

T/F
the 20 localized thickenings in the dental lamina corresponds with the future primary teeth

true

2

T/F
the earliest signs of tooth development are seen during the tenth week in utero

false

3

T/F
the outer (OEE) and inner (IEE) enamel epithelium are both a continuation of the basal layer of oral epithelium

true

4

t/f
the cap stage begins when the concavity of the cap grows more pronounced

true

5

t/f
primary teeth develop more quickly than permanent teeth

true

6

t/f
the vestibular lamina forms in a lingual direction from the dental lamina

false

7

t/f
the enamel organ is formed from epithelial cells

true

8

t/f
the dental sac is the same as the dental papilla

false

9

t/f
the dental lamina thickens first at the anterior midline

true

10

t/f
without the formation of the vestibular lamina there would be no alveolar ridge

true

11

t/f
the stellate reticulum is dervied from octodermal cells

true

12

t/f
the permanent molars develop from successional lamina

false

13

forms most permanent teeth

successional lamina

14

forms cementum

dental sac

15

forms enamel

enamel organ

16

forms mucobuccal fold

vestibular lamina

17

forerunner of primary tooth germ

dental lamina

18

forms pulp

dental papilla

19

the dental papilla is first seen in the

late bud stage

20

the various layers of the enamel organ DOES NOT

calcification of enamel

21

the enamel organ originates from the

ectoderm

22

the clefting that forms the thickened vestibular lamina eventually becomes a

mucobuccal fold

23

ectodermal dysplasia can cause poor development of which structures

skin
hair
enamel

24

successional lamina forms all except the permanent

molars

25

T/F?
the cells of the IEE change externally and shorten as they develop into ameloblasts. they are responsible for enamel formation

first statement false
second statement true

26

the basal layer of oral epithelium is composed of _______cells

cuboidal cells

27

the stratum intermedium develops in the _______ stage

bell

28

which cells or structures produce ameloblasts

IEE