Dentine Flashcards by Hannah Miller | Brainscape

Q

Mineral content in dentine

A

70%

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Q

Matrix content in dentine

A

20%

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Q

Water content in dentine

A

10%

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Q

What is dentine

A

specialised connective tissue

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Q

Hardness of dentine

A

KHN 75

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Q

70% mineral dentine content made of ?

A

hydroxyapatite

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Q

20% organic content in dentine made of?

A

collagen

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Q

Direction of collagen fibres

A

parallel to the ADJ

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Q

What does the collagen fibres in dentine do?

A

give dentine strength

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Q

Types of curvatures in dentine

A

primary and secondary

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Q

What is deep dentine more?

A

porous and wet

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Q

Where are most of the tubules of dentine found?

A

predentine

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Q

Is dentine innervated or not?

A

yes

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Q

Where are most of the nerves in dentine

A

predentine

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Q

Developmental classifications of dentine

A

mantle and circumpulpal

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Q

Tubule classifications of dentine

A

intra-tubular and inter tubular

Q

What is the first formed dentine

A

mantle dentine

Q

When is primary dentine formed

A

during tooth development

Q

When is secondary dentine formed?

A

after root completion

Q

What does tertiary dentine respond to?

A

pulpal insult

Q

Does pulp volume increase or decrease with age?

A

decrease

Q

Types of Tertiary dentine

A

Reactionary and Reparative

Q

2 other lines in dentine

A

incremental lins of von ebner and contour line of owen

Q

Zones in dentine

A

Interglobular and Granular Layer of Tomes

Q

Dentine changes in response to insult

A

dead tracts

Q

age changes in dentine

A

secondary dentine