Dentin Flashcards

1
Q

Hard tissue portion of pulp-dentin complex and forms bulk of the tooth

A

Dentin

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2
Q

Soft connective tissue that occupies the central portion of the tooth

A

Pulp

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3
Q

Space it occupies

A

Pulp cavity

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4
Q

Coronal part of the pulp

A

Pulp chamber

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5
Q

Where pulp and periodontal ligament meet and the nerves and blood vessel enter and leave the tooth

A

Apical foramen

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6
Q

Found at the lateral surface of the tooth and contains blood vessel

A

Lateral canals

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7
Q

A layer of unmineralized matrix that varies thickness

A

Predentin

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8
Q

Composition of mature dentin??

A

70% inorganic
20% organic
10% water

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9
Q

Color of thin enamel?

A

Yellowish color

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10
Q

Color of thick enamel?

A

White color

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11
Q

Constitutes a major portion of dentin
Circumpulpal dentin
Mantle dentin

A

Primary Dentin

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12
Q

Develops after root formation

A

Secondary dentin

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13
Q

Reactive or reparative dentin

Produced in reaction to various stimuli

A

Tertiary Dentin

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14
Q

Odontoblast processes that run in canaliculi trwnsversing the dentin layer

A

Dentinal Tubules

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15
Q

A collar of more highly calcified matrix that limits the tubules

A

Peritubular dentin

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16
Q

Tubules occluded with calcified material

A

Sclerotic dentin

17
Q

Located between dentinal tubules

A

Intertubular dentin

18
Q

Areas of unmineralized or hypomineralized dentin where globular zones of mineralization have failed to fuse into homogenous mass

A

Interglobular dentin

19
Q

Run at the right angles to the dentinal tubules and mark the normal rhymthmic, linear pattern of dentin desposition

A

Incremental Growth Lines or incremental lines of von ebner

20
Q

Seen below the surface of the dentin where the root is covered by cementum

A

Granular layer of tomes

21
Q

Color of teeth with pulpal diseases or without pulp

A

Dark / darkening of clinical crown

22
Q

May be located at the anatomic apex or 0.5 to 0.75mm around the apex

A

Apical foramen

23
Q

Contributes to uneven pukp recession and important in determining the cavity prep during resto procedures

A

Secondary Dentin

24
Q

Harder than bone, softer than enamel

A

Mature dentin

25
Deposited by pre-existing odontoblasts
Reactionary dentin
26
Deposited by newly differentiated odontoblast-like cells
Reparative Dentin
27
Follows an S-shaped path from outer surface of Dentin to the perimeter of pulp
Dentinal Tubules
28
Empty tubules where processed has disintegrated or retracted
Dead tracts
29
Appears black in ground section because it entraps air
Dead tract