Dentin Tissue Structure Flashcards

1
Q

Composition of dentin?

A

70% inorganic and 30% water/organic material

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2
Q

What makes up the basic unit of structure of dentin?

A
  • Dentinal tubule
  • Peritubular dentin
  • Intertubular dentin
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3
Q

Where does secondary dentin form?

A

Inside primary dentin

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4
Q

When does secondary dentin form?

A

When the tooth first occlues with an opposing tooth

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5
Q

What happens when secondary dentin is formed?

A

The pulp chambers decrease in size

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6
Q

Location of odontoblast cell bodies?

A

Outside of the calcified dentin

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7
Q

Reason for the location of odontoblast cell bodies?

A

To produce secondary and reparative dentin

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8
Q

What are the three types of trauma that cause the formation of reparative dentin?

A

Occlusal, chemical, and mechanical

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9
Q

Reparative dentin: occlusal trauma

A

Reparative dentin is produced in response to malocclusion

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10
Q

Reparative dentin: chemical trauma

A

Chemical trauma is cause by chemicals found within material used in restorations or bacterial decay (i.e. lemon juice, gastric acid, etc.)

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11
Q

Reparative dentin: mechanical trauma

A

Mechanical trauma is due to cavity preparations that extend into the dentin

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