(4) Dentino-pulpal complex - odontoblastic processes Flashcards
What are the 3 hypothesis for the withdrawal of odontoblasts?
- The process remains at the peripheral part
- Predetermined length of processes and then retreat
- Degeneration of the peripheral end
What is the most likely theory for the withdrawal of odontoblasts?
The odontoblastic process does get longer but the data end but the distal end of the processes die and disintegrates
The remnants of the process get mineraled over and this becomes the intratubular dentine.
What is this?
Afferent nerve
where is the nerve found?
Mainly present in the inner layers of the dentine
what has an intimate relationship with rage odontoblastic process?
The Afferent nerve
what do the Afferent nerve terminals contain?
The axons contain mitochondria vesicles
Do the Afferent nerve terminals have a sheath?
No
what area of the tooth contains the most sensory nerve terminals?
The coronal part beneath the cusps (in 80% tubules)
where are the sensory nerve terminals not found as abundantly?
The cervical and root dentin
What do the sensory nerve terminals contain?
Microtubules
Microfilaments
Where are the APC processes found?
Near the pulp
what do APC present to?
T cells
are the APC processes fund in or outwith the dentinal tubule?
Found in the pulp but some of their processes are progress into the pulp
What are the APC processes limited to?
pre-dentine
When do the APC processes extent deeper in the tubules?
When under various dentine
