Dental Odontoblasts and Dentin Regeneration

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What type of dentin is produced if the odontoblasts survive the injury?

Tubular dentin

Osteodentin

Normal dentin

Reparative dentin (correct)

What happens to the odontoblasts if they are killed due to injury?

They produce tubular dentin

They undergo regeneration

They are replaced by undifferentiated cells from deeper regions of the pulp (correct)

They survive and produce normal dentin

What is the term used for the newly formed dentin as a result of the healing process initiated by the pulp?

Reparative dentin (correct)

Normal dentin

Tubular dentin

Osteodentin

What is a characteristic feature of reparative dentin?

Fewer and more twisted tubules than normal dentin Signup and view all the answers

In what instances is osteodentin seen especially?

In response to rapidly progressing caries Signup and view all the answers

Where does the origin of the new odontoblast occur from?

Cells in the cell-rich zone or undifferentiated perivascular cells in deeper pulp regions Signup and view all the answers

What is the role of transforming growth factor-beta (TGF-b) in dentin formation?

It is involved in the production of tubular dentin Signup and view all the answers

What stimulates pulpal response leading to reparative dentin formation?

Chemical substances from restorative materials Signup and view all the answers

What distinguishes irregular secondary dentin from regular secondary dentin?

It is formed as a result of external stimuli Signup and view all the answers

What is a characteristic feature of tertiary dentin formation?

Variation in mineral content and irregular circumference Signup and view all the answers

What is believed to be involved in the production of osteodentin?

Bone morphogenetic protein (BMP) Signup and view all the answers

What influences the formation of interglobular dentin in tertiary dentin?

Biological rhythms Signup and view all the answers

What is absent in tertiary dentin, distinguishing it from other forms of dentin?

Dentin phosphophoryn Signup and view all the answers

What may be less ordered during tertiary dentin formation compared to primary dentinogenesis?

The molecular mediators Signup and view all the answers

What differentiates irregular secondary dentin from regular secondary dentin?

Formation due to external stimuli Signup and view all the answers

What type of dentin formation is influenced by biological rhythms?

Tertiary dentin Signup and view all the answers

Which growth factor is believed to be involved in the production of tubular dentin?

Transforming growth factor-beta (TGF-b) Signup and view all the answers

What stimulates pulpal response leading to reparative dentin formation?

Living or dead bacteria, their toxic products, and chemical substances from restorative materials Signup and view all the answers

What is the main difference between irregular secondary dentin and regular secondary dentin?

Formation as a result of external stimuli Signup and view all the answers

What do ultrastructural studies reveal about tertiary dentin formation?

Variation in the size and shape of dentinal tubules Signup and view all the answers

What is believed to influence the formation of interglobular dentin in tertiary dentin?

Biological rhythms Signup and view all the answers

What molecular mediator appears to be common to both development and repair processes?

Matrix-mediated cellular processes Signup and view all the answers

What is the main difference between irregular secondary dentin and osteodentin?

Involvement of bone morphogenetic protein (BMP) Signup and view all the answers

What is the suggested role of bone morphogenetic protein (BMP) in dentin production?

Production of osteodentin Signup and view all the answers

What are the primary sources of stimuli that lead to irregular secondary dentin formation?

Bacterial migration down the tubules and chemical substances from restorative materials. Signup and view all the answers

What sets tertiary dentin apart from other forms of dentin?

The presence of interglobular dentin. Signup and view all the answers

Dental Odontoblasts and Dentin Regeneration

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Questions and Answers

What type of dentin is produced if the odontoblasts survive the injury?

What happens to the odontoblasts if they are killed due to injury?

What is the term used for the newly formed dentin as a result of the healing process initiated by the pulp?

What is a characteristic feature of reparative dentin?

In what instances is osteodentin seen especially?

Where does the origin of the new odontoblast occur from?

What is the role of transforming growth factor-beta (TGF-b) in dentin formation?

What stimulates pulpal response leading to reparative dentin formation?

What distinguishes irregular secondary dentin from regular secondary dentin?

What is a characteristic feature of tertiary dentin formation?

What is believed to be involved in the production of osteodentin?

What influences the formation of interglobular dentin in tertiary dentin?

What is absent in tertiary dentin, distinguishing it from other forms of dentin?

What may be less ordered during tertiary dentin formation compared to primary dentinogenesis?

What differentiates irregular secondary dentin from regular secondary dentin?

What type of dentin formation is influenced by biological rhythms?

Which growth factor is believed to be involved in the production of tubular dentin?

What stimulates pulpal response leading to reparative dentin formation?

What is the main difference between irregular secondary dentin and regular secondary dentin?

What do ultrastructural studies reveal about tertiary dentin formation?

What is believed to influence the formation of interglobular dentin in tertiary dentin?

What molecular mediator appears to be common to both development and repair processes?

What is the main difference between irregular secondary dentin and osteodentin?

What is the suggested role of bone morphogenetic protein (BMP) in dentin production?

What are the primary sources of stimuli that lead to irregular secondary dentin formation?

What sets tertiary dentin apart from other forms of dentin?

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