Pulp and Periodontum (complete) Flashcards
What kind of cell creates enamel
Ameloblasts
What kind of cell creates dentin
Odontoblasts
What percentage of enamel becomes mineralized
98%
What is the structure of dentin similar to
it is similar to a bundle of straws. it has tubes that pass all the way through it. from the dentinoenamel junction to the pulp
What can be found in the tubes of the dentin
Nerve Endings
What is the periodontal ligament
lots of ligaments that hold the tooth to the alveolar bone
What is the layer of the tooth that the periodontal ligament attaches to
the cementum
What is the surface of the dentinoenamel junction like
Very rigid with projections all over it ^^^^^^^^^.
Why is the dentinoenamel junction rigidy like this ^^^^^^
it increases surface area, and that allows it to hold the dentin and enamel tightly together
What is the DEJ
the dentino enamel junction
What is the CEJ
The cementoenamel junction
What is the CDJ
the cementodental junction
What can be found in the pulp chamber
- Blood vessels
- Lymph vessels
- Nerves
What is an abscess tooth
a tooth that has had infection in it, but because the tooth is rigid, the swelling from the infection has no option but to push out of the apex of the tooth and form a pool of infection in the surrounding bone at the apical end of the root
What is the dental pulp
the loose connective tissue found inside the tooth
What is the function of the dental pulp
to form and support the dentin
What initiates the formation of enamel
the odontoblasts
how do odontoblasts initiate the formation of enamel
at the basal membrane they interact with dental epithelium and signal it to start creating enamel
What are the only kind of nerve fibers in the tooth
Autonomic (sympathetic) nerve fibers
What kind of neural receptors or sensory neurons are found in the pulp
Nociceptors (pain sensing neurons)
What do nociceptors do?
They only send pain signals when stimulated
Are nociceptors in the dentin as well as in the pulp
yes, nociceptors are in both
Does the pulp chamber respond to external stimuli
yes, the nerves in the pulp chamber and in the dentin will respond to external stimuli
Can dentin be reformed?
Yes it can