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Flashcards in dentine and pulp Deck (13)
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1

is dentine harder or softer than bone?

harder

2

is dentine harder or softer than enamel?

softer

3

does dentine have greater or lesser tensile and compressive strength compared to enamel?

greater

4

how is dentine permeable?

contains tubules

5

what are the contents of dentine and their percentage?

hydroxyapatite (70% weight, 50% vol)
water (10% weight, 20% vol)
organic matrix (20% weight, 30% vol)

6

where do the tubules in dentine run from?

amelodentinal junction to pulp

7

why does caries affect the pulp in a lower area than the lesion on dentine?

the curvature of dentine tubules

8

which cells create non-mineralised organic dentine (predentine)?

odontoblasts

9

what is dental pulp and what are the components of it?

connective tissue, containing odontoblasts, fibroblasts, defence cells, fibres (collagen & oxytalan), matrix, nerves, blood vessels and lymphatics, proteoglycans

10

what is the function of dental pulp?

nutritive, dentine growth, dentine repair, defence, neural

11

what name is given to dentine before the tooth has completely formed?

primary dentine

12

what is secondary dentine?

dentine when tooth has formed

13

what is teriary dentine?

reparing dentine