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Dent 3000 > missed terms. anatomy 1 > Flashcards

missed terms. anatomy 1 Flashcards

1
Q

where do gums come from

A

vestibular lamina

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2
Q

OEE cells are

A

cuboidal

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3
Q

sr cells are

A

star shaped

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4
Q

stratum intermedium cells are

A

flat layers

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5
Q

iEE cells are

A

short columnar

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6
Q

what determines tooth type

A

late bell stage, IEE folds according to tooth type

- Dental papilla

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7
Q

what else do ameloblasts secrete

A

basemennt membrane

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8
Q

when is KLK4 protein released

A

maturation of enamel

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9
Q

when is MMP20 released

A

secretory stage of enamel

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10
Q

enamel tufts

A

made of tuftelin

- form when enamel extends innto DEJ

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11
Q

enamel spindles

A
  • formed when odontoblast processes are embedded in enamel
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12
Q

age changes of enamel

A
  • decreased pore size, extrinsic staining, water forced out
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13
Q

what starts odontogenesis

A

epithelium

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14
Q

how does dental lamina form

A

ecctomesenchye signals oral epi to form ridge

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15
Q

where does enamel organ come from + what does it do

A

oral epi from dental lamina

  • determines shape of crown
  • forms DGJ
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16
Q

where is ectomesenchyme from

A

neural crest

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17
Q

what does the mesenchyme form

A

papilla, sac, and pulp

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18
Q

apposition stage

A

IEE to preamelo to dental pulp to preodonto to odonto to predentin to ameloblast to enamel matrix

  • DEJ forms
  • Odontoblast processes
  • prismless enamel: secretory ameloblasts
  • enamel prisims: formed by toms process (mineralized)
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19
Q

ename is secreted

A

down@

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20
Q

what is pulp

A

specialized loose connective tissue

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21
Q

cell free zone of pulp

A

has blood vessels

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22
Q

cell rich zone of pulp

A

fibroblasts

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23
Q

what cells can differentiate in the pulp

A

odnotoblast and mesenchymal cells (make more odonto)

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24
Q

immune cells in the pulp

A

macrophage (eat old cells), lymphocyte (antibody), dendridic cells ( antigen presenting shit)

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25
Q

what is in pulp matrix

A

pulp soup

  • collagen, type I and III
  • grounn substance of glycans that picck up water
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26
Q

where does nnerve in pulp come from

A

5th nerve

- C fibers (sympathetic) that sense pressure in pulp tissue and blood flow

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27
Q

true pulp stone

A
  • odontoblast and tubules

- ectopic

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28
Q

false pulp stone

A
  • concentric ring of lamellae
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29
Q

age change inn pulp

A
  • fibrosis, decreased volume
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30
Q

whats in tooth germ

A
  • enamel organ, papilla and saca
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31
Q

where to find primary dentinn

A
  • major portion of crown and root dentin
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32
Q

where to find secondary dentinn

A

alonng pulp dentin border

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33
Q

what is ree made of

A

ameloblast and papillary lager

- all 4 layers of organ condense

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34
Q

dentinogenesis

A
  • ree grows apiccal. forms HERS (OEE and IEE). induces DP outer cells to become root odontoblasts. Secrete circumpulpal predentin. HERS detaches
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35
Q

what determines root humber

A
  • the growth rate of epi diaphragm determinens the number of roots
  • also the number of ingrowths in the cervical loop
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36
Q

why does hers die

A

to allow sac cells in to make cementum

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37
Q

where to find cemetoccytes

A
  • in apical 1.2 to 2/3 of root!
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38
Q

WHERE DO cementoblasts come from

A
  • dental sacc, but also HERS cells!
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39
Q

how is PDL ligament made

A
  • sac turns into fibroblasts and they become anchored in cementum as it is made
40
Q

exposed root dentin

A

Because HERS did not break up, no cementum formation could be initiated by dentin and sac. Leads to deposed dentin in root.

41
Q

enamel pearls

A

When HERS do not break up and epithelial root sheath remain adherent to predentin, they may differentiate into fully functional ameloblasts and deposit enamel, forming enamel pearls

42
Q

accessory root cNAL

A

While HERS is forming root surface, blood cells are differentiated and neurovascular bundles start to confine the blood cells.

HERS has to make a detour to accommodate the neurovascular bundles.

Odontoblasts are not formed in these areas and no dentin is deposited. Results in accessory canals

43
Q

how long till deciduous teeh roots are done

A

1-1.5 years

44
Q

how long till permanent teeh roots are done

A

2-3 years

45
Q

bone during eruption

A

bone is resorbed so roots and grow. bony fundus. during eruption, bone trabeculae fill in the fundus to form bone ladder.

46
Q

where does DGJ come from

A

REE

47
Q

primary dentitionn numbring

A

start from upper right as A then end at lower right at T

48
Q

palmer numbering

A

A-E but with angle. REMEMBER LEFT AND RIGHT

49
Q

federation numbering

A

5,6,7,8 in quadrants. upper right is 5, then upper left is 6, lower left is 7. then 55,54 from out to the MIDDLE

50
Q

when does development of bb teeth start

A

6-10 week

51
Q

when does bb teeth calcification start

A

14-20 wk

52
Q

how much of crown is formed at birth

A

1/2 to 5/6

53
Q

when does enamel formation complete

A
  • 12 mos of age
54
Q

when do teeth reupt

A

6 mos- 2.5 years

55
Q

when does full primary dentition form

A

2.5-6 yrs

56
Q

when does permament dentition start

A

12 years

57
Q

teeth start exfoliating at

A

6-12 years

58
Q

first teeth to erupt

A

o+P mandibular incisor central

59
Q

sequence of primary tooth reuption

A

7+ 4 rule. at 7 mos, there should be 2 teeth. 11 should be 4

  • usually erupt in pairs, starting with mandible
  • front to back but the 1st primary molar erupts b4 canin
60
Q

maxillary primate space

A
  • between lateral and canine
61
Q

mandublar primate spacce

A

between canine and molar

62
Q

mesial step terminal plane

A

right chair

  • the distal surface of the lower second primary molar is more mesial to distal surface of upper second primary molar
  • normal
63
Q

distal step terminal place

A
  • distal surface of the lower second primary molar is more distal to the distal surface of the upper second primary molar
  • left chair
64
Q

class 3

A

excessive mesial step

  • huge right chair
  • the cusp of the max primary canine is distal to the distal surface of the mand primary canine
65
Q

overjet

A

horizontal distance

  • good is 0-4 mm
  • too much means bonne malocclusionn
66
Q

overbite

A

vertical distance

  • good is 10-40%
  • too much is due to bad habit like suck thumb
67
Q

primary teeth vs permaneny (9)

A
  • fatter so more MD width
  • more white (smaller ratio of enamel to dentin)
  • more x shaped.
  • contact area because teeth touch each other more
  • less pits
  • thinner enamel
  • enamel rods slope horizonntal (occlusally)
  • roots are narrow and wide
  • large pulp chamber with higher pulpal horns
68
Q

molar relationship

A

the mesiodistal relationship between the distal surfaces of the upper and lower second primary molars (terminal plane)

69
Q

stem cells properties

A

self renew, undifferentiated

70
Q

embryonic stem cell origin

A

blastocyst

  • can give rise to 3 cell layers??meso,ecct
  • pluripotent
  • tumor forming
71
Q

adult stem cell

A
  • multipotent
  • form many things in body
  • no tumor forms
72
Q

mesenchymal stem cell

A

MSC

  • have specific marks and niche
  • form colonies of cells that do diff stuff
  • can do tissue engineering, immunomodulation and cause disease
73
Q

dental pulp stem cell

A

DPSC

  • good prolif ability
  • can form mineralized structure like bone and enamel
  • even dentin and pulp, neurons
74
Q

stem cell recruitment

A

can recruit other cells (even if not human) to make ccells!

75
Q

colony cluster

A

can isolate a cell from there with a specific fxn but still won’t know what it will do

76
Q

baby teeth stem cell

A

SHED

  • super proliferation
  • pulp, dentin, neurons
  • can do autology
77
Q

pdl stem cell

A

PDLSC

  • cementoblast, cementum, collagen, fibroblast,
  • used in periodontitis (treat perio disease)
  • autology common use
78
Q

autology

A
  • take stem cells out of patient, generate, and put them back in
79
Q

Apical pailla stem cell

A

SCAP

  • root tip forms (bio root)
  • dentin??
  • PDL ligamennt forms around it
80
Q

gingiva stem cells

A
  • GMSC
  • leave no scar, wound healing compared to skin
  • immune fxn
  • higly prolif
  • ex colitis. helps protect tissue from damage
  • used in allograft skin setting and wound healing since it stops tissue rejection by blocling some immune thing
81
Q

dental stem cells can regenerate

A
  • pulp. pdl. and periodontal tissue in human
82
Q

dental stem cells are more prolif than

A

bone marrow cells

83
Q

DPSC and SHED in mice can regenerate

A

dentin

84
Q

cap stage

A
  • enamel organ forms
  • papilla forms
  • sac forms
85
Q

types of enamel demineralization

A

1,2,3

86
Q

are cells present in dentin

A

only one, tomes fiber, which are odontoblast processes

87
Q

reactive and reparative dentin

A
  • reactive is formed by old odonto and are continuous with tubules
  • reparative is new odonto, not cts
88
Q

mantle dentin is

A

type III collagen

89
Q

circumpulpal dentin is

A

type I collagen

90
Q

where to find sclerotic dentin

A
  • apical 1/3 of root and crown midway btw DEJ and pulp
91
Q

where to find dead track dentin

A
  • coronal dentin
92
Q

when is tooth calcification done

A

3-4 years of age

93
Q

when does crowding mess with teeth

A

less than 3-6 mm is 20% crowding, then 3 mm is 50, then 0 is 66 then 100 crowding

94
Q

class I

A

slight mesial step, but considered flush

95
Q

class II

A

distal step

96
Q

class III

A

excessive mesial step

97
Q

colony forming unit - fibroblast

A

formed by DPSC, also PDLSC

Dent 3000 (3 decks)

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