Pulps-Dentinal Complex: Pulp BIO Flashcards
what is the dental pulp
CT
matured dental papilla
what is dentine
calcified dental tissue of pulp
what are the functions of the pulp
dentine formation
defence
repair
sensory
what are features of pulp anatomy
pulp horn coronal pulp chamber radicular pulp apical foramen lateral canal apical delta
what are the similarities of pulp ad CT
cells - mainly fibroblasts collagen matrix ground substance blood vessel and nerves 75% water 25% organic
what are the diff of pulp and CT
sp cells - odnotblasts contained in rigid chamber no fat cells no oxytalin fibres no mast cells blood vessels - wide lumen, narrow wall densely innervated
what re the pulp structure internally
odontoblast layer
cells free zone of weil
cell rich zone
pulp core
what is the odontoblast layer
columnar cells process in dentine appearspseudostratfiied organelles reflect activity junctional complexes - barrier
what are pulpal cells
odontoblasts
fibroblasts - CRZ
undiff ectomesencymal cells
defence cells
what does undiff ectomesencymal cells do
retain embryonic potential
decrease with age
form fibroblasts
what are some defence cells
macrophages
lymphocytes
what are the fibres of the pulp
collagen
- type 1 - 60%
- type 2 - 40%
no oxytli fibres
what is the blood supply like in the pulp
rich blood supply terminate in sub-odontoblastic capillary plexus venules no valves thin walled vessels high perfusion rate
what does denial fluid contain
proteins
glycoproteins
polysaccharides
where does dentinal fluid flow
outward in opened tubules
