DENTAL TISSUES

Question 1

what enamel?

Answer 1

cover anatomical crown
96% inorganic - hydroxyapatite
2mm thick
non vital - ocne cell make enamel die = dead forever
translucent
hard 360-390
brittle

Question 2

what main structure feature enamel

Answer 2

enamel prisms

Question 3

% enamel
mineral

Answer 3

96

Question 4

% enamel
water

Answer 4

2

Question 5

% enamel
matrix

Answer 5

1-2

Question 6

ideal properties tooth

Answer 6

hard
strong
repair
repsond damage
resistant chemical change

Question 7

% dentine
water

Answer 7

10

Question 8

% dentine
mineral

Answer 8

70

Question 9

% dentine
matrix

Answer 9

20

Question 10

% cementum
mineral

Answer 10

65

Question 11

% cementum
mineral

Answer 11

65

Question 12

% cementum
matrix

Answer 12

23

Question 13

% cementum
water

Answer 13

12

Question 14

% bone
mineral

Answer 14

60

Question 15

% bone
matrix

Answer 15

25

Question 16

% bone
water

Answer 16

15

Question 17

dentine

Answer 17

TUBULAR
vital

Question 18

what do dentine tubukes contain

Answer 18

cell processes
nerves
fluid - flow out

Question 19

hwo do fillings stay in

name three types

Answer 19

mechanical undercut

bond to enamel
- utilise structure
- acid etch

bond to dentine
- acid demineralisation
- infilrate collagen w resin
- penentraetubules w resin

Question 20

cut thru enamel

Answer 20

BUR DRILL

high speed air turbine w
- diamond
-tungsten carbine

Question 21

dentine

Answer 21

specialised connective tissue
hard - 75 KHN
strong
70 Mineral
20 collagen - give dentine strength - protein fibre

pre dentine
- non minerlaised
- beside pulp

Question 22

collagen fibres dentinte
direction?

Answer 22

parralel to ADJ

Question 23

CARIOUS dentine

Answer 23

SOFT

CUT W BLADED BUR

Question 24

sound dentine

Answer 24

diamond burs - high speed
bladed burs - low/high speed

Question 25

dentintal tubules

Answer 25

tubules continuos w pulp

Question 26

what is dental pulp

Answer 26

specialised tissue maturated dental papilla dentine = calfiied tissue pulp

Question 27

pulp functions

Answer 27

dentine formation, defence + repair, sensory

Question 28

pulp horns

Answer 28

project into cusps

Question 29

radicular pulp

Answer 29

in root canals

Question 30

lateral canal

Question 31

apical delta

Answer 31

branchs of apex

Question 32

dentine + pulp lined

Answer 32

embryoloic physicaly functionally

Question 33

is dentine porous

Answer 33

dentine porous any material irritate pulp = inflammation

Question 34

is dentinen vital

Answer 34

yes repsond to insult

Question 35

what is pulp

Answer 35

specialsied connective tissue enclsoed rigid chamber no scope tissue swell when inflamed = toothache

Question 36

why do we get toothahce

Answer 36

as when pulp infected no place for tissue to swell

Question 37

cementum

Answer 37

MINERLAISED TISSUE - 65% minerlasied special connective tissue cover tooth root tooth support resisiatnt to reSORPTION

Question 38

where amkes dentine

Answer 38

pulp as denitne = calified tissue of pulp