Unit 307- restorative

Question 1

class 1

Answer 1

fissures

Question 2

class 2

Answer 2

two surfaces like mo

Question 3

class 3

Answer 3

m or d of a incisor or canine

Question 4

class 4

Answer 4

MI OR DI extended cavity

Question 5

class 5

Answer 5

cervical margin

Question 6

class 6

Answer 6

cusps/occlusal

Question 7

what is a gingival margin trimmer

Answer 7

to trim margin of cavity

Question 8

what is the effect cutting out a DO cavity and what do the tiny grooves do

Answer 8

dovetail effect
they provide adequate retention

Question 9

what is an enamel chisel

Answer 9

remove any enamel from cavity

Question 10

reasons for moisture control

Answer 10

-protect patient airway
-pt is comfortable
-good visibility
-allow materials to set

Question 11

low speed suction name

Answer 11

saliva ejector

Question 12

revolutions of high speed

Answer 12

500,000

Question 13

revolutions of low speed

Answer 13

400,000

Question 14

burs with diamond carbide surfaces are used for what

Answer 14

enamel, dentine, old fillings

Question 15

contra angled and shank are used for what

Answer 15

caries, dentine, small on children

Question 16

use of the type of burs round, pear, fissure

Answer 16

r-access to cavities
p-shaping
f-outlining

Question 17

difference between slow speed and high speed burs

Answer 17

ss- latch grip
hs- friction grip

Question 18

what is air abrasion

Answer 18

compressed air abrasive practices

Question 19

zinc oxide and eugenol example

Answer 19

kalzinol

Question 20

ad and dis and use of zinc phosphate

Answer 20

A-quick, hard, adhesive to dentine
D-moisture sensitive, irritants pulp due to it’s acidity
Use-temp fill, cavity base, luting cement

Question 21

ad and dis and use of zinc oxide and eugenol

Answer 21

A-cheap, sedative to inflamed pulp
D-reacts with composites, burn soft tissues
Use-metalic fillings cavity base

Question 22

what is a thin mix of zinc phosphate called and for

Answer 22

luting cement for crown cementation

Question 23

ad and dis and use of zinc polycarboxylate

Answer 23

A-most adhesive cement to dentine
D-sticky to place
Use- cavity base, luting cement

Question 24

what material is used for linings and what is it for

Answer 24

calcium hydroxide
protect the pulp from thermal and chemical shock, it kills bacteria

Question 25

what is in a amalgam capsule

Answer 25

powered alloy silver copper and liquid mercury

Question 25

disadvantages of calcium hydroxide

Answer 25

soluble in water requires a base on top as it's too thin

Question 26

ad and dis of amalgam

Answer 26

A- easy to use, cheap, good strength, longevity D-mercury is toxic, not retentive, thermal shocks, metal colour

Question 27

large amalgam spill instructions

Answer 27

-PPE -mercury absorbent paste(calcium hydroxide and sulphur with water) -left to dry and cleaned with wet towel and placed in container -risk assess

Question 28

how does composite set

Answer 28

blue light which makes catalyst set

Question 29

what is in acid etch

Answer 29

37% phosphoric acid

Question 30

how much does the light penetrate composite

Answer 30

2mm

Question 31

advantage and disadvantage of composite

Answer 31

A- colour, adhesive from etch and bond, strength in small, fast set, premixed D- long procedure, expensive, can only use glass ionomer for base, moisture

Question 32

what is unfilled resins

Answer 32

fissure sealant

Question 33

what does glass ionomer capsule consist of

Answer 33

aluminosilicate and polyacrylic acid and water

Question 34

ad and dis of GIC

Answer 34

A- adhesive, good for abrasion class 5 cavities, release fluoride D- low strength, deep cavities require calcium hydroxide, moisture

Question 35

what type of comp for anterior teeth

Answer 35

microfine

Question 36

what classification would you use gi on

Answer 36

class 5

Question 37

what is in comp that makes it its shade

Answer 37

inorganic filler

Question 38

what would you use at the end for a deep cavity

Answer 38

spoon excavator

Question 39

what is cermet

Answer 39

ceramic metal mixture

Question 40

what two materials would you use on a crown core

Answer 40

cermet, hybrid comp

Question 41

what is hybrid comp for teeth

Answer 41

posterior

Question 42

universal comp uses on what teeth

Answer 42

both ant and post

Question 43

name 4 components of comp

Answer 43

powdered glass, quartz, silica, ceramic particles

Question 44

what is the resin base in comp called

Answer 44

bisphenol A-glycidyl methacrylate (BISGMA)