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Flashcards in tooth development Deck (22)
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1
Q

primary teeth start appearing around age of

A

6 months

2
Q

complete primary dentition by

A

2.5 to 3 years

3
Q

mixed dentition has primary and permenant teeth from ages

A

6-13 years

4
Q

histological stages of tooth development

A
intiation
proliferation
differentiation
apposition
calcification
eruption
attrition
5
Q

dental lamina

A

membrane band containing organs of future teeth

and corresponds to future arch arrangement

6
Q

Outer enamel epithelium (OEE): (2)

A

outermost part of structure

DIRECT continuation of basal layer of epithelium

7
Q

Inner enamel epithelium (IEE):

A

cells which outline the concavity in the deepest part

8
Q

stellate reticulum

A

cells in the middle of (IEE) and (OEE)

9
Q

differentiation occurs because of the appearance of x which also encourage cell growth

A

specialized germ cells

10
Q

Odontoblasts: encourage cell growth to form x
• Ameloblasts: encourage cell growth to form x
• Cementoblasts: encourage cell growth to form root covering x
• Fibroblasts: encourage cell growth to form the x and x
• Osteoblasts: encourage cell growth to form x

A
dentin
enamel
cementum
periodontal ligament and pulp
alveolar bone
11
Q

The entire primary dentition is initiated between week x and x of embryonic
development

A

6 and 8

12
Q

The successional permanent teeth are initiated between week x in utero and
x months after birth, and the permanent molars between week x in utero
and x years of age

A

week 20
10 months
week 20
5 years

13
Q

20 teeth in the x. They begin
erupting into the oral cavity at approx x and are all fully erupted
by x
remaining as the sole dentition until x

A

primary dentition

6 months

2.5 to 3 years

5 years

14
Q

which teeth do not have pre cursors

A

permanent molars

15
Q

formation of dentine begins around

A

week 18

16
Q

when does root formation begin

A

after dentinogenesis and amelogenesis

17
Q

Summary of tooth formation

A

Origins

Components
of the tooth
germ

Cells of the
tooth germ

Products

18
Q

phases of eruption

A

pre-eruptive tooth movement

eruptive tooth movement

post eruptive tooth movement

19
Q

pre eruptive movement

A

caused by primary and permanent tooth germs in jaw tissue before they erupt

20
Q

eruptive tooth movement

A

caused by tooth moving its position in jaw bone to occlusion position

21
Q

posteruptive tooth movment

A

maintaining position of erupted tooth in occlusion while jaws grow

22
Q
a fibrous
connective tissue strand that overlies
successional teeth and connects them
to the lamina propria of the overlying
oral mucosa
A

gubernacular

cord