42 Questions
What is the main function of fibroblasts in the pulp?
Synthesis and degradation of fibers and ground substances
What is the shape of fibroblasts in the cell-rich zone?
Spindle
What is the characteristic of the nucleus of fibroblasts?
It stains deep with basic dye
What is the function of odontoblasts in the pulp?
Formation of dentin
What is the shape of odontoblasts in the early stage of development?
Columnar
What is the characteristic of odontoblasts in the later stages of development?
They appear pyriform in shape
What is the length of odontoblasts?
5-7u in diameter and 35u in length
What is the function of odontoblasts in the development of dentin?
To develop the organic matrix and assist in its calcification
What is the term for mature fibroblasts with few cell organelles?
Fibrocyte
What is the primary function of the sensory nerves in the pulp?
To respond to pain stimuli
What is the function of the pulp in terms of nutrition?
To mediate the nutrition of dentin through odontoblasts
What is the term for the zone that includes the odontoblastic zone, cell-free zone, and cell-rich zone?
Odontogenic zone
What types of cells are present in the cell-rich zone?
Fibroblasts and undifferentiated mesenchymal cells
What is the location of the cell-rich zone?
Under the cell-free zone
What is the characteristic of the pulp core?
Presence of major vessels and nerves of the pulp
What is the response of the pulp to irritation?
To produce reparative dentin and mineralize affected dentinal tubules
What is the characteristic of odontoblasts?
They are responsible for synthesizing and secreting proteins.
What is the function of neutrophils in the pulp?
To eliminate dead cells and remove bacteria.
What is unique about the nucleus of plasma cells?
It is small and appears eccentric in the cytoplasm.
What is the function of lymphocytes?
To provide immune defense.
What is the characteristic of the terminal part of odontoblasts?
It is clear and has intercellular junctions.
What is the characteristic of the cell membranes of adjacent odontoblasts?
They exhibit junctional complexes.
What happens to neutrophils in case of inflammation?
Their nucleus increases in size and exhibits a prominent nucleolus.
How many forms do lymphocytes have?
Two.
What is the shape of the nucleus in mast cells?
Round
What is the function of dendritic cells?
To stimulate the division and activity of T –lymphocytes
What is the location of dendritic cells?
Around the odontoblasts and central blood vessels
What is the role of progenitor cells?
To differentiate into other cell types
What type of collagen fibers are present in the pulp?
Both type I and II
What is characteristic of collagen fibers in young pulp?
They are relatively few and delicate
What is absent in the pulp?
Elastic fibers
What is characteristic of the pulp in terms of blood supply?
It is highly vascularized
Where are true denticles typically found?
Near the apical foramen
What is the characteristic of false denticles?
They are formed of concentric layers of mineralization
What is the typical location of diffuse pulp calcification?
On top of hyaline degeneration in the root canal
What is the effect of pulp stones coming close to a nerve bundle?
Pain may be elicited
What is the effect of the close proximity of pulp stones to blood vessels?
Atrophy of the blood vessels
What is the characteristic of pulp stones in terms of their size?
They are larger in size and present in the coronal part
What is the classification of pulp stones based on their location?
Free, attached, and embedded
What is the characteristic of false denticles in terms of their formation?
They are formed around an area of hemorrhage or dead cells
What is the pattern of diffuse pulp calcification in the pulp tissue?
Following the course of blood vessels or collagenous bundles
What factor favors the development of diffuse pulp calcification?
Advancing age
Learn about the different functions of dental pulp, including the development of the organic matrix, nutrition, protection, and defense. Understand how odontoblasts and sensory nerves play a crucial role in these functions.
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