Pulp and responses

Question 1

name 3 functions of pulp

Answer 1

Dentine formation
Defence and repair e.g. tertiary dentine
Sensory

Question 2

name this structure

Answer 2

pulp horns

Question 3

name this structure

Answer 3

pulp chamber

Question 4

name this structure

Answer 4

root canal

Question 5

name this structure

Answer 5

apex

Question 6

name this structure

Answer 6

accessory furcation canal

Question 7

name this structure

Answer 7

lateral canal

Question 8

name this structure

Answer 8

apical delta

Question 9

what does delta mean?

Answer 9

when something branches off to exit i.e. river or pulp

Question 10

the lateral canal allows communication between the pulp and what?

Answer 10

PDL

Question 11

name this structure on the apex of the tooth

Answer 11

cementum

Question 12

name this structure on the apex of the tooth

Answer 12

radiographic apex

Question 13

name this structure on the apex of the tooth

Answer 13

apical foramen

Question 14

name this structure on the apex of the tooth

Answer 14

cemento-dentinal junction

Question 15

name this structure on the apex of the tooth

Answer 15

apical constriction

Question 16

how is the pulp different to normal connective tissue? 4

Answer 16

contains specialised cells

is contained in a rigid chamber

blood vessels with wide lumen and thin walls

densely innervated

Question 17

name this part of the pulp

Answer 17

odontoblast layer

Question 18

name this part of the pulp

Answer 18

cell free zone of Weil

Question 19

name this part of the pulp

Answer 19

cell rich zone

Question 20

name this part of the pulp

Answer 20

pulp core

Question 21

name this part of the pulp

Answer 21

pulp core

Question 22

name this part of the pulp

Answer 22

cell rich zone

Question 23

name this part of the pulp

Answer 23

cell free zone of Weil

Question 24

name this part of the pulp

Answer 24

odontoblast layer

Question 25

odontoblasts are specialised from what type of cell?

Answer 25

ectomesenchymal cells

Question 26

what type of cell are odontoblasts?

Answer 26

postmitotic cells

Question 27

the activity of odontoblasts is controlled by what?

Answer 27

growth factors

Question 28

odontoblast processes extend how far into dentine?

Answer 28

1/3

Question 29

odontoblasts form a single layer of ?cells that appear ?

Answer 29

columnar pseudostratified

Question 30

what is the most numerous cell in the cell rich zone?

Answer 30

fibroblasts

Question 31

what are the defence cells present in the pulp?

Answer 31

macrophages T lymphocytes

Question 32

axon reflexes cause vasoconstriction or vasodilation?

Answer 32

vasodilation

Question 33

the blood supply to the pulp terminates where?

Answer 33

rich sub-odontoblastic capillary plexus

Question 34

how does the pulp die?

Answer 34

Local vasodilation Increase volume in area Increase in pressure due to rigid chamber Blood flow stops due to competing pressures across the capillary bed

Question 35

dentinal fluid flow changes with what?

Answer 35

pulpal pressure

Question 36

how does inflammation affect dentinal fluid flow?

Answer 36

Inflammation increases pulpal pressure - fluid flow rate increases

Question 37

how do vasoconstrictors affect dentinal fluid flow?

Answer 37

- Vasoconstrictors block the vessels going into the pulp - reduce dentinal fluid flow

Question 38

what percentage of the innervation to the pulp is non-myelinated?

Answer 38

70-80%

Question 39

what happens to the nerves as they travel towards the outer pulp?

Answer 39

get thinner and loose their myelination

Question 40

innervation to the pulp ends where?

Answer 40

in the cell free zone with the plexus of Raschkow

Question 41

learn