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dental material > embryo final > Flashcards

embryo final Flashcards

1
Q

embryonic disc liners order 3

A

ectodermal cells
endodermal cells
mesodermal layer

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2
Q

dominant gene definition

A

expresses itself whether in one or both parents

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3
Q

recessive gene definition

A

only expresses itself when in both

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4
Q

interstitial growth AKA

A

endogenous

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5
Q

appositional growth AKA

A

exogenous

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6
Q

interstitial growth definition

A

growth deep within tissue by mitosis of each chondrocyte,

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7
Q

appositional growth definition

A

layered growth on the external surface of cartilage

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8
Q

turnover time for buccal mucosa duration

A

10-14 days

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9
Q

basement membranes location

A

between epithelium and connective tissue

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10
Q

order of EPITHELIUM 4 basic layers

A

basal layer
spinous layer
granular layer
superficial layer

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11
Q

does connective tissue have blood vessels?

A

yes

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12
Q

does epithelial tissue have blood vessels?

A

no

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13
Q

where does epithelial tissue get their blood vessels from?

A

connective tissue

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14
Q

cartilage have nerve supply?

A

no

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15
Q

cartilage have blood supply?

A

no

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16
Q

is cartilage non-calcified?

A

yes

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17
Q

why does cartilage heal slowly?

A

no blood supply

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18
Q

types of muscle tissue?

A

smooth
skeletal
cardiac

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19
Q

when does teratogen affect the fetus? WEEKS

A

4-7 weeks

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20
Q

what kinds of affect does teratogens do to the fetus?

A 
face
neck
oral cavity'
small deficiencies
clefts 
cysts under oral mucosa `
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21
Q

stomodeum AKA

A

primitive mouth formation

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22
Q

what # arch makes the mandibular arch?

A

1

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23
Q

what # arch makes the hyoid arch?

A

2

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24
Q

what are the names of the arch that creates the mandible?

A

meckels

reichert

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25
Q

body of the tongue developed from

A

2 lateral lingual swellings on the sides of tuberculum impar

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26
Q

what arches form the tongue?

A

2 and 3

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27
Q

thyroid gland attaches to tongue by

A

thyroglossal duct

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28
Q

order of stages

A

bud
cap
bell

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29
Q

enamel physical properties

A

avascular
no nerves
96 %
4%

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30
Q

whats contained in 96 inorganic mineral

A

calcium hydroxyapatite- calcium phosphate

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31
Q

whats contain in 4 organic matrix and water

A

1 % organic matrix- enamelin

3% water

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32
Q

which physical property is stronger?

A

dentin

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33
Q

what does the enamel rod contain

A

rod sheath

rod core

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34
Q

is rod sheath more resistant than core?

A

yes

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35
Q

why is the rod core more demineralize?

A

bc of organic material

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36
Q

when is neonatal lines formed?

A

at birth

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37
Q

neonatal lines deposited

A

incrementally

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38
Q

perykymata def

A

fine horizontal lines from termination of striae of retzius

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39
Q

when does secondary dentin form

A

after occlusion

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40
Q

hydrodynamic theory definition

A

stimulation of the exposed dentinal tubules

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41
Q

what does the periodontium include

A

cementum
alveolar bone
periodontal ligament

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42
Q

dental sac forms the

A

periodontium

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43
Q

PDL originates from

A

dental sac
or
follicle

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44
Q

interstitial space; location

A

between bundles of principal fibers

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45
Q

is interstitial space highly vascular?

A

yes

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46
Q

what does interstitial space carry?

A

vascular
neutral tissue
lymphatics

47
Q

what happens in aging ligaments

A

cell number decreases
cell activity decreases
scalloping occurs

48
Q

alveolar bone proper AKA

A

alveolus

49
Q

alveolar crest appears how in the ANT

A

rounded

50
Q

alveolar crest appears how in the POS

A

flat

51
Q

alveolar crest is how far from CEJ?

A

1.2 to 1.5 mm apical to the CEJ

52
Q

2 types of alveolar bone proper

A

compact

bundle bone

53
Q

does compact bone have sharpys

A

no

54
Q

interradicular septum is what?

A

alveolar bone and cancellous bone between the roots of teeth

55
Q

why does the mandibular condyle grow?

A

adaptation to environmental or functional stresses and growth by chondroblasts activity

56
Q

what kinds of bone does the condyle have in children

A

spongy

57
Q

what kind of bone does the condyle have in adults

A

compact

58
Q

what is the articular disk?

A

dense collafenous, fibrous pad between the condyle heads and the articular surfaces

59
Q

what does the articular dics divide into

A

upper and lower synovial cavities

60
Q

what is the cells called that cover with a thin layer of synovial cells

A

synovial membrane

61
Q

what does the membrane secrete

A

synovial fluid

62
Q

what does the synovial fluid do

A

lubricates and provides nutrition to joint

63
Q

temporo-mandibular

A

laterally

64
Q

sheno-mandibular

A

medially

65
Q

stylo-mandibular

A

posteriorly

66
Q

4 sets of muscles of mastication

A

temporalis
masseter
medial pterygoid
lateral pterygoid

67
Q

3 types of tissue

A

lining mucosa
masticatory mucosa
specialized mucosa

68
Q

structure of lining mucosa 4

A

basement membrane
papillary layer
reticular layer
submucosa

69
Q

epithelium composed of 3 layers

A

stratum basale
stratum intermedium
stratum superficiale

70
Q

eleidin protein is

A

transient

71
Q

Fordyce’s spots or granule is associated with

A

ectopic sebaceous glands

72
Q

masticatory mucosa layers 4

A

stratum basale
stratum intermediate/ stratum spinosum
stratum granulosum
stratum corneum

73
Q

keratin def

A

tough, fibrous. opaque water proof protein that impervious to pathogenic invasion and resistant to friction

74
Q

keratin is produced during the maturation of the ______

A

keratinocyte

75
Q

stippled gingiva AKA

A

rete pegs

76
Q

stippled gingiva def

A

attachment sire to the underlying alveolar bone

77
Q

interdental papilla charateristics of health; ANT

A

knife edge

78
Q

interdental papilla characteristic of health; POS

A

rounded

79
Q

specialized mucosa of the tongue

A

filiform
fungiform
circumvalle
foliate

80
Q

taste perception

A 
sweet
salty
sour
bitter
umami
81
Q

sweet location

A

tongue tip

82
Q

salty location

A

tongue tip and side

83
Q

sour location

A

tongue sides

84
Q

bitter location

A

soft palate and circumvalle

85
Q

non-keratinocytes % of epitheliam or keratinocytes

A

90

86
Q

melanocytes location

A

basal layer

87
Q

oral epithelial non-keratinocytes composed of

A

lymphocytes
leukocytes
mast cells

88
Q

cell composition

A

serous cell
mucous cells
serous demilunescombination of s/m

89
Q

salivary gland function unit

A

acinus

90
Q

serous cell characteristics

A

high in proteins
low in carbs
zymogen granules

91
Q

mucous cell characteristics

A

high in carb
low in proteins
mucin-viscous mixture of glycoproteins

92
Q

parotid is the smallest salivary gland

A

false, largest

93
Q

parotid gland secrets total of saliva %

A

90

94
Q

how much saliva we get a day

A

3 pints

95
Q

saliva functions

A

wash tooth
mastication
swallowing
pellicle formation

96
Q

stenson duct drains the

A

parotid gland

97
Q

Wharton duct drains the

A

submandibular gland

98
Q

types of tonsilallar tissue

A

pharyngeal (1)
palatine (2)
lingual (2)

99
Q

functions of tonsils

A

produce lymphcytes

100
Q

tonsils are part of the ______system

A

lymphatic system

101
Q

definition of plaque

A

bacteria: lymphocutes, leukocytes, epithelial cells and mucin lodging into pellicle

102
Q

def of calc

A

stone-like deposit that develops on the organic cell walls of bacterial plaque

103
Q

what does cementum during ortho do?

A

lays down and resorbs

104
Q

does cementum absorb slower than bone?

A

yes

105
Q

why does cementum absorb slower than bone?

A

no blood vessels

106
Q

what happens; aging of pulp

A

more collogen
small
less sensitivity
less cells

107
Q

why does palatine tonsils get infected

A

creps

108
Q

is calc found on dentures?

A

yes

109
Q

is the cuticle the last layer that forms on enamel

A

yes

110
Q

where is lining mucosa located

A

lamina propria and epithelium

111
Q

ventural tongue surface used for

A

sublingual drugs for vascular

112
Q

gingiva inflammation reactor cells

A

lymphocytes
leukocytes
mast

113
Q

what happens with articular fossa growth

A

steeper

114
Q

is the alveolar bone seen on xrays

A

yes

dental material (2 decks)

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