Introduction Flashcards
alveolar process is made up of
- outer cortical plate
- inner cortical plate (lamina dura)
gingiva is made up of
- free
- attached
free gingiva is
where the probe goes until
what gingiva may be lost in disease
attached gingiva
gingiva qualities
- goes apically to MGJ
- keratinized
- stippling
- may be darker due to physiologic pigmentation
alveolar mucosa is defined by
moving lips
alveolar mucosa qualities
- non-keratinized
- loosely attached to alveolar bone
junctional epithelium is permeable due to
wide intercellular spaces
pros and cons for permeable JE
- con: bacteria gets in
- pro: WBCs get in to fix it
how many basal lamina does JE have
two
- one that faces tooth (internal)
- one that faces CT (external)
definition of JE
part of gingiva that attaches to enamel
function of JE
- protect from bacteria
- provide seal b/w gums and teeth
- joins gingiva to teeth below sulcus
how does JE join gingiva to teeth
by the epithelial attachment: internal basal lamina + hemidesmosomes
oral epithelium qualities
- keratinized
- covers free and attached gingiva
- finger-like projections (creates stippling)
- “cornified”
function of oral epi
protect against mechanical injury (by desmosomes which lack permeability)
what helps attached CT and oral epi
hemidesmosomes
sulcular epi
- parakeratinized
- good resistance to mechanical injury
interdental col
- between buccal and lingual papilla
- apical to contact point
- non-K JE (permeable)
supracrestal tissue attachment
JE + CT
-aka. biological width
passive eruption
apical movement of gingiva that exposes the teeth
active eruption
coronal movement of teeth through alveolus
mean sulcus depth
0.69 mm
mean length of epi attached
0.97mm (most variable)
mean length of CT attached
1.07mm (most constant)
