35 terms

Dental Anatomy module VII

STUDY
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Masticatory mucosa
includes free and attached gingiva, it is thick, dense
*designed to withstand trama
** Keratinized
Lining mucosa
thin, free moving, tears easily
**NON-Karetinized-smooth
Red in color b/c of a lot of capillaries
Includes: soft palate, vestuble (averolar mucosa & buccal mucosa), floor of mouth, inside cheecks/lips (labial mucosa)
Gingival sulcus
space b/w free gingiva & tooth
Free gingiva
between free gingival margin & free gingival groove
found: sulcus
Free ginigval groove
seperates FREE and attached ginigiva
found bottom of gingival sulcus
Attached gingiva
attached to underlying bone
lies between freegingiva & aveolar mucosa
mucogingival junction
seperates attached gingiva from aveolar mucosa
junctional epithelium
how tissue attaches to tooth
ends at gingival sulcus
found:base of sulcus
Rete pegs
causes stippling
connects to epithelium to underlying connective tissue-> makes stippling
Interdental groove
vertical depression
fx: allows food to spill into vestible
COL
found: tip of interdental papilla-> just below contact area
site of gingival inflamation
Gingival fibers
there are 3
-group1
-group2
-group3
group1
up
cementum up to gingival margin
-dentogingival fiber
group 2
out/horizonally
-goes straight out
makes free gingival root
group 3
down & comes over aveolar bone/crest
Transseptal
-connects tissue of adjacent teeth
connects gingival between teeth
Circular
holds tissue around tooth-like a neck tie
-fiber to fiber connection
Peridontal ligaments
there are 5
aveolar bone, horizontal group, oblique group, apical group, interradicular group
aveolar bone
-LOCATION
crest bone to cementum
horizontal group
-DIRECTION
goes horizontal from cementum to aveolar bone
oblique group
-DIRECTION
***** MOST NUMEROUS
runs diagonally
cementum to bone
apical group
-LOCATION
apically from cementum to bone
interradicular group
-LOCATION
multi-rooted teeth
*** molars & premolars
cellular
apical 1/3
acellular
middle 1/3
Aveolar bone
3 layers:
cortical bone, trabecular bone,cribiform plate
cortical bone
buccal & lingual surface
trabecular bone
fx: add/had bone marrow
cribiform plate
aveolar bone
** under pressure makes more called: Bundle Bone
**** forms in Avolas (tooth socket)----KNOW
lamina dura-radio-pake(white)
Periodontal disease
gingivitis,periodontitis
Gingivitis
** Pseudo pocket-inflamed gums
immflamation in gums
Periodontitis
lossof bone level
Layers added to cribiform plate/bone
bundle bone
Osseous apposition
new bone forming
Osseous resorption
loss of bone