Denture teeth and soft linings

Question 1

what is tissue conditioner used for

Answer 1

temporary
applied to gain a more equal distributions of load and more normal mucosal position

Question 2

when is tissue conditioner used

Answer 2

immediate denture after xLA
following infection of denture bearing area to adapt fit to healing tissues

Question 3

what is functional impression material

Answer 3

applied to fit surface to allow for more definitive impression

Question 4

what is a permanent resilient lining (soft lining)

Answer 4

applied as a ‘shock absorber’ to avoid pain from movement of denture upon nerves

Question 5

what nerves may be relieved by soft lining

Answer 5

mental nerve with atrophic ridge

Question 6

types of soft lining materials

Answer 6

acrylic polymers with solvent
acrylic polymers or co-polymers with an inert ester
silicones

Question 7

what does an inert ester act as

Answer 7

a plasticiser

Question 8

crucial features of tissue conditioners and functional impression materials

Answer 8

none irritant
non toxic
visco-elastic

Question 9

2 presentations of tissue conditioners as functional impression materials

Answer 9

powder/ liquid
preformed sheets of acrylic gel

Question 10

powder form of tissue condition and functional impression material

Answer 10

polyethyl methacrylate or co-polymer

Question 11

liquid form of tissue conditioner as function impression materials

Answer 11

ethyl alcohol plus aromatic ester e.g., butyl phthaly glycolate

Question 12

types of resilient linings

Answer 12

heat cured acrylics
self cured acrylics
heat cured silicone
self cured silicone

Question 13

heat cured acrylic resilient lining

Answer 13

powder of higher methacrylates activated by benzoyl peroxide in liquid (containing monomer and plasticiser)

Question 14

self cured acrylic resilient lining

Answer 14

powder of higher methacrylates activated by benzoyl peroxide from a tertiary amine

Question 15

heat cured silicone resilient lining

Answer 15

processed against acrylic
contains a siloxane material and a filler of silica

Question 16

self cured silicones

Answer 16

similar to impression materials for composition and setting

Question 17

what are silicones susceptible to

Answer 17

candida albicans growth

Question 18

thickness of a resilient liner

Answer 18

2-3mm

Question 19

types of artificial teeth

Answer 19

acrylic
poreclain

Question 20

how are acrylic teeth produced

Answer 20

dough moulding or injection moulding

Question 21

how are acrylic teeth retained to denture base

Answer 21

chemical interaction

Question 22

how are poreclain teeth produced

Answer 22

mould that are 30% larger than required as when fired shrink

Question 23

how are poreclain teeth retained to denture base

Answer 23

mechanical retention via holes or pins

Question 24

what noise to poreclain teeth produce

Answer 24

click on chewing and transmit greater load to denture bearing area

Question 25

what teeth are more likely to suffer abrasion

Answer 25

acrylic

Question 26

what teeth are more likely to chip and fracture

Answer 26

poreclain

Question 27

what teeth have easier occlusal adjustment

Answer 27

acrylic