Pulp Flashcards
just some stuff i wanna memo
pulp zones
odontoblast layer
cell free zone or zone of weill
cell rich zone
pulp core
odontoblast layer
odontoblast cells
cell free zone
rich in capillaries, nerve axons but very
few cells
has RASCHKOW PLEXUS
in H&E appears empty
becomes more defined after root formation
cell rich zone
numerous fibroblasts
stem cells
subodontoblastic capillary plexus
nerve axons
pulp core
central zone has large nerves , blood vessels , lymphatics, and numerous ct cells and fibers
pulp cells
fibroblast
odontoblast
blood cells- lymphocytes
dendritic cells
macrophages
undiff ectomesenchymal cells
location of odontoblast
below predentin where its cytoplasmic processes extend into the dentin
number of odontoblast is equal to
number of dentinal tubule
60,000 -75,000 more in crown and less in radicular pulp
coronal odontoblast
large and columnar
radicular odontoblast
small and cuboidal
apical odontoblast
flattened
functions of odontoblast
dentin formation and mineralization
selective barrier
produce proinflammatoy cytokines
odontoblast active cells
elongated
basal polarized nucleus
basophilic cytoplasm
golgi
long processes extend into dentinal tubules
cell body 50 long and 5-10 width
resting odontoblast cell
short
little cytoplasm
hematoxophilic nucleus
fibroblast
spindle shaped
numerous, esp in coronal pulp also in pulp core and cell rich zone
production and degradation of collagen fibers and ground substance
rich in organelles for protein synsthesis
number n size varies with function in young n old pulp
undiff ectomesenchymal cells
appear in cell rich zone and pulpal core in perivascular regions
large polyhederal cell with large lightly staining nuclei
stems cell that once activated it will diff into fibroblast and odontoblast
also its cells where pulp ct cells are derived
