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Oral Histology > Attached Gingiva and Alveolar Mucosa > Flashcards

Attached Gingiva and Alveolar Mucosa Flashcards

1
Q

what are regions bound to bone between free gingiva and alveolar mucosa

A

attached gingiva

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2
Q

what are the boundaries of interdental papilla

A

region of tissue located between cervical margin and interproximal contact point of two teeth (gingiva in the interproximal space)

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3
Q

is interdental papilla comprised of attached and free/marginal gingiva?

A

YES

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4
Q

how doess shape of interdental papilla change?

A

it depends on location in oral cavity

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5
Q

what is the region of lining mucosa

A

alveolar mucosa

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6
Q

alveolar mucosa boundary

A

extends from mucogingival junction to basal part of alveolus

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7
Q

what is the region of mucosa between labial and buccal surface

A

alveolar mucosa

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8
Q

what is alveolar mucosa comprised of

A

SSNK epithelium, CT, and submucosa

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9
Q

the width of keratinized epithelium of marginal and attached gingiva is important to determine what?

A
  1. strength of attachment
  2. protection of CT
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10
Q

what extends from free gingival groove to mucogingival junction

A

attached gingiva

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11
Q

what provides structural point of attachment for alveolar mucosa and reinforces marginial gingva

A

attached gingiva

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12
Q

describe attached gingiva epitheliuim

A

oral epithelium - SSPK
thick and impermeable; amount of keratinization varies

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13
Q

attached gingiva type of mucosa

A

masticatory

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14
Q

is mucoperiosteum present in attached gingiva

A

yes

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15
Q

does attached giingiva have submucosa

A

NO! the dense lamina propria provides resistance to functional forces

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16
Q

what does attached gingiva have instead due to the lack of elastic?

A

thick bundles of collagen

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17
Q

does attached gingiva have prominent rete ridges

A

YES! especially between margiinal and attached

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18
Q

how is attached gingiva attached to tooth and cortical plate of alveolar process?

A

gingival fiber groups in CT

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19
Q

what are collagen fibers in lamina propria of FG and AG that attach gingiva to tthe tooth and bone

A

dentogingival fiber group of PDL

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20
Q

what provides rigidity for free gingiva to withstand masticatory forces and help brace gingiva to tooth

A

dentogingival fiber group of PDL

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21
Q

what reinforces the atttachment of the JE and connects adjacent teeth together

A

dentogingival fiber group of PDL

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22
Q

[gingival OR principal] fiber group will be destroyed before [gingival OR principal] fiber (dentoalveolar) group

A

Gingival; principal

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23
Q

type of dentogingival fiber group:

circumferentially surrounds tooth in free gingiva

A

circular

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24
Q

type of dentogingival fiber group:

alveolar crest to free/attached gingiva

A

alveogingival group

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25
Q

type of dentogingival fiber group:

cementum to free and attached gingiva

A

dentogingival group

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26
Q

type of dentogingival group:

cementum and cortical plate

A

dentoperiosteal/supraperiosteal

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27
Q

type of dentogingival group:

CEJ to CEJ of adjacent teet

A

transeptal

28
Q

type of dentogingival group:

attach oral and vestibule papilla

A

interpapillary

29
Q

supragingival/dentogingival fiber groups are typically found where?

A

free/marginal gingiva

30
Q

what fiber is first affected as inflammation progresses to periodontitis

A

dento-gingival

31
Q

what leads to loss of JE attachment and apical migration, and facilitates spread of infection and inflammation to underlying bone

A

loss of transeptal fibers

32
Q

what occurrs due to inflammation and facilitates loss of attachment of the JE with apical migration/gingival recession

A

destruction of gingival fiber group occuring in periodontal disease

33
Q

what is the transition point between attached and alveolar mucosa

A

mucogingival junction

34
Q

mucogingival junction type of epithelium

A

SSPK -> SSK

35
Q

are rete ridges present in mucogingival junction

A

yes, but shallow

36
Q

CT variations in mucogingival junction

A

increase in vascularizaation results in increase CT (submucosa)

37
Q

where are the histological feataures of attaches gingiva found

A

lingual and facial surface

38
Q

T/F: muogingival junction is absent on palatal surface

A

TRUE

39
Q

what determines shape of papilla

A

shape of the tooth

40
Q

what papillae are at interdental papilla

A
  1. facial
  2. oral
41
Q

what connects the two types of papilla

A

small interdental depression called col

42
Q

shape of anterior interdental papilla

A

pointed/triangular = gingival margin

43
Q

shape of posterior interdental pailla

A

col-broad, wedge shape

44
Q

clinical significance of interdental papilla

A

interproximal region is site for infection due to difficulty in cleaning

45
Q

what happens if transeptal fibers of dentogingival fiber group break?

A

JE will move apically to re-establish contact alveolar crest, eventually losing the attachment

46
Q

define: point where teeth meet

A

contact point

47
Q

what is the area below the contact point; normally filled with interdental papilla

A

embrasure

48
Q

what is defined as an apical shift of the marginal gingiva toward CEJ

A

gingival recession

49
Q

what are factors that influence the shape of interdental gingiva

A
  1. presence/absence of contact point
  2. extent of gingival recession - area often first noticed
50
Q

what results in increased susceptibility to dentin hypersensitiity and root caries

A

gingival recession

51
Q

what is the region directtly below the contact point of posterior teeth

A

interdental col (depression)

52
Q

interdental papilla containts what types of gingiva

A

attached and free

53
Q

interdental col type of epithelium

A

thin SSNK

54
Q

interdental col is continuous with what epithelium

A

junctional epithelium

55
Q

interdental col is derived from what

A

REE

56
Q

are interdental col absent if teeth are spaced or tooth is lost?

A

YES

57
Q

when does interdental col become exaggerated?

A

during inflammation

58
Q

what is the moveable region of mucosa covering the alveolar process

A

alveolar mucosa

59
Q

where can you find alveolar mucosa

A

lingual, labial, and buccal surfaces

60
Q

alveolar mucosa epithelium

A

SSNK

61
Q

are rete ridges present in alveolar mucosa

A

Yes, but shallow

62
Q

submucosa of alveolar mucosa

A

has increased vascularization

63
Q

does alveolar mucosa have glands? if so, what kind

A

Yes, mixed minor salivary glands

64
Q

what are mucosal folds that attach movable alveolar mucosa to the attached gingiva

A

frenulum

65
Q

what is a moveable tissue with a loose attachment underlying bone via submucosa

A

alveolar mucosa

Oral Histology (12 decks)

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