Attached Gingiva and Alveolar Mucosa Flashcards
what are regions bound to bone between free gingiva and alveolar mucosa
attached gingiva
what are the boundaries of interdental papilla
region of tissue located between cervical margin and interproximal contact point of two teeth (gingiva in the interproximal space)
is interdental papilla comprised of attached and free/marginal gingiva?
YES
how doess shape of interdental papilla change?
it depends on location in oral cavity
what is the region of lining mucosa
alveolar mucosa
alveolar mucosa boundary
extends from mucogingival junction to basal part of alveolus
what is the region of mucosa between labial and buccal surface
alveolar mucosa
what is alveolar mucosa comprised of
SSNK epithelium, CT, and submucosa
the width of keratinized epithelium of marginal and attached gingiva is important to determine what?
- strength of attachment
- protection of CT
what extends from free gingival groove to mucogingival junction
attached gingiva
what provides structural point of attachment for alveolar mucosa and reinforces marginial gingva
attached gingiva
describe attached gingiva epitheliuim
oral epithelium - SSPK
thick and impermeable; amount of keratinization varies
attached gingiva type of mucosa
masticatory
is mucoperiosteum present in attached gingiva
yes
does attached giingiva have submucosa
NO! the dense lamina propria provides resistance to functional forces
what does attached gingiva have instead due to the lack of elastic?
thick bundles of collagen
does attached gingiva have prominent rete ridges
YES! especially between margiinal and attached
how is attached gingiva attached to tooth and cortical plate of alveolar process?
gingival fiber groups in CT
what are collagen fibers in lamina propria of FG and AG that attach gingiva to tthe tooth and bone
dentogingival fiber group of PDL
what provides rigidity for free gingiva to withstand masticatory forces and help brace gingiva to tooth
dentogingival fiber group of PDL
what reinforces the atttachment of the JE and connects adjacent teeth together
dentogingival fiber group of PDL
[gingival OR principal] fiber group will be destroyed before [gingival OR principal] fiber (dentoalveolar) group
Gingival; principal
type of dentogingival fiber group:
circumferentially surrounds tooth in free gingiva
circular
type of dentogingival fiber group:
alveolar crest to free/attached gingiva
alveogingival group
type of dentogingival fiber group:
cementum to free and attached gingiva
dentogingival group
type of dentogingival group:
cementum and cortical plate
dentoperiosteal/supraperiosteal
type of dentogingival group:
CEJ to CEJ of adjacent teet
transeptal
type of dentogingival group:
attach oral and vestibule papilla
interpapillary
supragingival/dentogingival fiber groups are typically found where?
free/marginal gingiva
what fiber is first affected as inflammation progresses to periodontitis
dento-gingival
what leads to loss of JE attachment and apical migration, and facilitates spread of infection and inflammation to underlying bone
loss of transeptal fibers
what occurrs due to inflammation and facilitates loss of attachment of the JE with apical migration/gingival recession
destruction of gingival fiber group occuring in periodontal disease
what is the transition point between attached and alveolar mucosa
mucogingival junction
mucogingival junction type of epithelium
SSPK -> SSK
are rete ridges present in mucogingival junction
yes, but shallow
CT variations in mucogingival junction
increase in vascularizaation results in increase CT (submucosa)
where are the histological feataures of attaches gingiva found
lingual and facial surface
T/F: muogingival junction is absent on palatal surface
TRUE
what determines shape of papilla
shape of the tooth
what papillae are at interdental papilla
- facial
- oral
what connects the two types of papilla
small interdental depression called col
shape of anterior interdental papilla
pointed/triangular = gingival margin
shape of posterior interdental pailla
col-broad, wedge shape
clinical significance of interdental papilla
interproximal region is site for infection due to difficulty in cleaning
what happens if transeptal fibers of dentogingival fiber group break?
JE will move apically to re-establish contact alveolar crest, eventually losing the attachment
define: point where teeth meet
contact point
what is the area below the contact point; normally filled with interdental papilla
embrasure
what is defined as an apical shift of the marginal gingiva toward CEJ
gingival recession
what are factors that influence the shape of interdental gingiva
- presence/absence of contact point
- extent of gingival recession - area often first noticed
what results in increased susceptibility to dentin hypersensitiity and root caries
gingival recession
what is the region directtly below the contact point of posterior teeth
interdental col (depression)
interdental papilla containts what types of gingiva
attached and free
interdental col type of epithelium
thin SSNK
interdental col is continuous with what epithelium
junctional epithelium
interdental col is derived from what
REE
are interdental col absent if teeth are spaced or tooth is lost?
YES
when does interdental col become exaggerated?
during inflammation
what is the moveable region of mucosa covering the alveolar process
alveolar mucosa
where can you find alveolar mucosa
lingual, labial, and buccal surfaces
alveolar mucosa epithelium
SSNK
are rete ridges present in alveolar mucosa
Yes, but shallow
submucosa of alveolar mucosa
has increased vascularization
does alveolar mucosa have glands? if so, what kind
Yes, mixed minor salivary glands
what are mucosal folds that attach movable alveolar mucosa to the attached gingiva
frenulum
what is a moveable tissue with a loose attachment underlying bone via submucosa
alveolar mucosa
