Clinical Relevance of Pulp Flashcards
Pulp is protected by intact ________,________ and _________.
Dentin
Enamel
Periodontum
The pulp horn is the _______ and the chamber is the _______.
Top of the pulp
body of pulp
What is another term for root area?
Radicular Area
Where do nerves and blood vessels enter the tooth?
Apical Foramen
What are lateral canals?
Canals smaller than the apical foramen that enter the tooth
If pulp swells there is no where for the interior contents to grow because pulp is surrounded by _________.
Lots of hard tissue including dentin and enamel
The top most part of the apical area is made of _________ which contains _______ and ________ tissue.
transitional tissue which contains perio and endodontic (pulp) tissue
Endodontist’s work up until they reach the _________ tissue
Periapical tissue
We do not want to touch the periodontal tissue.
________ line the apical root up until they reach the area where the ___________.
Odontoblasts
fibers for periodontum attach to cementum
Pulp is a __________ tissue.
The primary role of pulp is to _________ that produce ________.
______ protects pulp.
specialized connective tissue
create odontoblasts for dentin formation
Secondary Dentin
From the interior of the pulp to the exterior of the tooth, describe the features of the dentin-pulp complex
Cell-rich Zone
Cell Free Zone
Odontoblasts
Predentin
Dentin
Dentin is a living tissue.
True or False?
True
Dentin is formed by _________ which have processes located in the ________. The tubules widen as they approach ______.
Odontoblasts, dentinal tubules
the pulp
Primary Dentin is formed __________.
Secondary Dentin is formed __________. What do its tubules look like?
before tooth eruption
After root is fully developed. LESS regular
Dentin is made of _______%inorganic material.
______% Water
_______ % organic material of which a majority is ________.
70%- Hydroxyapatite
10%
20% , collagen
The dentinal tubules will contain __________ and __________ processes.
Nerve and Odontoblastic processes
The pulp chamber can ______ as we age and builds up _______.
reduce , dentin
Predentin is __________ , _________ matrix between ________ and _______.
Unmineralized ORGANIC matrix between Mineralized Dentin and the Odontoblasts
In NORMAL pulp,
the odontoblast layer will be the __________ and ________ to predentin.
This layer contains the _________ of _________.
outermost layer and subadjacent to PREDENTIN
cell bodies of odontoblasts.
The odontoblastic layer has more cells in the ____________ than the _________ pulp area.
coronal pulp area, radicular pulp area
Coronal odontoblastic cells are more __________ than those in _________.
columnar, radicular pulp
Right _____ the odontoblastic layer is a ___________ zone that is more prominent in the ________pulp
What does it contain?
There is also a __________ zone with high ______.
What does it contain?
Below, cell-free zone that is more prominent in the coronal pulp
- Plexus of capillaries
- Nerve Plexus of Raschow
3.Ground Substance
Cell-RICH Zone, high cell dentisy
- Fibroblasts (1 and 3)
- Collagen Fibers (1 and 2)
- Undifferentiated Mesenchymal Cells
- Macrophages
Pulp Proper
What is the predominant cell?
What is the pulp matrix made of?
- Fibroblasts which are connective tissue cells
- Ground Substance and Collagen Fibers
What cells are responsible for immunosurveillance of the pulp?
Dentritic Cells and Lymphocytes
What cells are chronically found in inflamed pulp?
Mast Cells
All cells in pulp include
Fibroblasts
Odontoblasts
Macrophages
Dentritic Cells
Lymphocytes
Mesenchymal Cells
Osteoclasts
The central mass of pulp contains _______.
Blood vessels and nerves
Mesenchymal cells of pulp differentiate into __________.
- Fibroblasts
- Odontoblasts
- Osteoclasts
- Macrophages
Nerves enter the ________ as a ____________ and divide as they go into the ___________.
apical foramen as a bundle and divide as they go into the coronal part of the tooth.
Describe what the nerves in a tooth would look like from the apical to the coronal part of the tooth.
They will start out collectively in the apical region, branch out as they approach the coronal portion and congregate all along the coronal area
The coronal area will appear dark while the apical area will have visible branching of nerve fibers.
In the coronal pulp area, what kind of nerve fibers are most common and what are they responsible for?
Location as layers
A Delta Fibers
It transmits the first sharp pain you experience
Odontoblastic and subodontoblastic layer
In the body proper pulp area, what kind of nerve fibers are most common and what are they responsible for?
C fibers
They are responsible for the throbbing pain associated with tissue damage.
This one requires a LOT of damage
What are autonomic nerve fibers?
Modulates microcirculation of blood vessels.
What are the 3 main nerve fibers found in pulp?
C-fibers -Body Proper
A-Fibers - Coronal
Autonomic - Blood Vessels
What is the hydrodynamic theory?
When the fluid in dentinal tubules move due the activation of exposed dentin by cold.
The movement of fluid causes odontoblastic processes to deform which are attached to nerve fibers.
The deformation of odontoblastic processes causes a distortion of tissue with nerve endings at the pulp dentin border causing pain.
This is due to a small cracks in enamel and dentin.
What is hyperalgesia?
Extra pain sensitivity
Acutely inflamed pulp can cause ________ in dentin because _________.
sensitivity
inflammatory agent can reach tubules
As we age, there are ________ in the pulp. This is why we can do some procedures in _________ and not in ______ patients.
less cells
Younger Patients / Older Patients