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protectioin against injury and invasion
palms of hands and soles of feet
strong and waterproof
disease-lots for defense
from connective tissue to sulcular epithelium
fill spaces between tissues and organs of the body
cells are sparse-macrophages, neutrophils, extracellular matrix, fibroblasts, collegan fibers, capillaries
scalloping between epithelium and connective tissue
increase adhesion by increasing surface area
para or keratinized protection
crest of GM to MGJ
wavy interface with connective tissue
External basal lamina
connects JE to connective tissue
barrier to biofilm and connective tissue
seals off bacteria
plentiful cells, connected to each other
Gingival connective tissue
solidity, attaches gingiva to cementum and bone
AKA lamina propria
5% fibroblasts and immune cells
55-65% extracellular matrix
30-35% gel like material
tooth surface covered by JE and fiber bundles above crest of bone
1 mm of JE and 1 mm of fiber bundles
about 2 mm total
always maintained, even if bone resorption is necessary
support, sensory, nutritive, formative, resorptive
fibroblasts, cemento/osteoblasts, extracellular matrix, rich nerve and blood supply
.05-.25 mm thickness
calcified layer of connective tissue that covers the tooth root
seals dentinal tubules
attaches PDL fibers to tooth
compensates for occlusal wear, forms more at the apex
organic matrix, mineralized portion-hydroxyapatite
no blood or nerve supply
no cementocytes, cervical 1/3-1/2 of the root
no new cementum
removed with instrumentation
30-60 um thick
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