pulp morphology 1 Flashcards
what is endodontium?
pulp
what is the connective tissue core of the tooth?
what is the pulp?
what is the main function of pulp?
produce dentine
what cells are in the pulp?
odontoblasts, fibroblasts and defence cells
what extracellular components are in pulp?
fibres: collagen, oxytalan
matrix: proteoglycans, chondroitin, SO4, dermatan SO4
what types of nerves are in pulp?
sensory; autonomic (sympathetic)
what are the components of pulp?
cells, extracellular components, nerves, b.v, lymphatics
what is predentine?
unmineralised dentine
what are the functions of pulp?
nutritive dentine growth dentine repair defence neural
what is the developmental link between dentine and pulp?
they develop from the papilla
what cells migrate from neural crest to form papilla?
ectomesenchyme
what pulpal elements extend into dentine?
odontoblast processes
nerve terminals
immune cells(dendritic)
dentinal fluid
where does the fluid from pulp capillaries leak?
interstitial space
where else does the fluid go?
lymphatic drainage
dentinal tubules
how does tooth wear to the enamel and dentine occur?
mastication-abrasion bruxism-attrition abfraction-occlusal overload diet-erosion caries operative procedures
what are the functional links between dentine and pulp?
formation of secondary dentine
formation of tertiary dentine
regulation of exchange of material between dentine and pulp
why does tertiary dentine form?
tooth wear
what are the types of tertiary dentine?
reactionary
reparative
what does reactionary dentine form due to?
mild stimulus
when is primary dentine formed?
during tooth development- so quickly
when is secondary and tertiary dentine formed?
when tooth development is complete, so pace is slower than primary
what does reparative dentine form in response to?
intense stimulus that destroys primary odontoblasts
what is reactionary dentine formed by?
primary odontoblasts
what is reparative dentine formed by?
secondary odontoblasts
