Denture base resins

Question 1

____ is a broad term used to describe natural or synthetic substances that form plastic materials after polymerization

Answer 1

Resin

Question 2

_____ is a term used to designate a colorless, pungent acid

Answer 2

Acrylic

Question 3

The main drawback of ____ was the brittleness that caused fractures to be common

Answer 3

Ceramics

Question 4

What are the 2 denture base polymers that we have used?

Answer 4

Polymethyl methacrylate (PMMA) and Urethane dimethylacrylate (light-activated)

Question 5

Denture base is fabricated with _____ resins

Answer 5

Polymethyl methacrylate (PMMA) resins

Question 6

PUre _____ is a colorless, transparent solid

Answer 6

PMMA

Question 7

_____ is supplied by the powder liquid system

Answer 7

PMMA

Question 8

PMMA resin has:

_____ esthetic properties

Answer 8

Excellent

Question 9

PMMA resin has:

____ strength

Answer 9

Adequate strength

Question 10

PMMA resin has:

____ water sorption

Answer 10

Lower water sorption

Question 11

PMMA resin has:

____ solubility

Answer 11

Low solubility

Question 12

PMMA resin has:

_____ allergenicity

Answer 12

Non-toxic, low allergenicity

Question 13

PMMA resin has:

____ repair

Answer 13

Easily repaired

Question 14

Does PMMA resin reproduces detail accurately?

Answer 14

Yes

Question 15

PMMA resin has:

____ molding and processing rechnique

Answer 15

Simple molding and processing technique

Question 16

What is the liquid monomer of PMMA resin?

Answer 16

methyl methacrylate

Question 17

What is the powder polymer of PMMA resin?

Answer 17

polymethyl methacrylate

Question 18

What is the plasticizer of PMMA resin?

Answer 18

Dibutyl phthalate

Question 19

What is the initiator of PMMA resin?

Answer 19

Benzoyl peroxide

Question 20

What is the cross linking agent of PMMA resin liquid?

Answer 20

Glycol dmethacrylate

Question 21

What is the inhibitor for increased shelf life of PMMA resin liquid?

Answer 21

Hydroquinone

Question 22

The PMMA \_\_\_\_ is made of the following:
PMMA beads
Pigments
Plasticizer
Benzoyl peroxide

Answer 22

PMMA Powder

Question 23

What are the 3 types of acrylic resin?

Answer 23

Heat cure, chemical cure, and light cure

Question 24

___ occurs if temp rises too quickly: monomer boils out and leaves bubbles

Answer 24

Porosity

Question 25

A _____: heat at surface of resin is conducted away into investing medium, hence no porosity on surface of resin; vaporization of the monomer affects the thick areas of denture base

Answer 25

Internal porosity

Question 26

A _____: is an irregular shape located throughout the base. Caused by: Inadequate pressure Not enough resin in mold Improperly mixed resin

Answer 26

Porosity

Question 27

____ are basically the same composition as the denture base resin, except for pigmentation to produce shades; highly cross-linked resins

Answer 27

Resin denture teeth

Question 28

Is there a greater degree of polymerization with heat-activated or autopolymerized?

Answer 28

Heat-activated

Question 29

Is there a better color stability with heat-activated or autopolymerized?

Answer 29

Heat-activated

Question 30

In _____ resins, an amine in the liquid reacts with the benzoyl peroxide in the powder to promote polymerization at room temperature

Answer 30

Autopolymerization resins

Question 31

The ____ resins turns orange after a few months due to the tertiary amine activator in the liquid oxidizing

Answer 31

Autopolymerization resins

Question 32

In light activated denture resins, the activator of the resin is ______

Answer 32

visible light

Question 33

In light activated denture resins, the initiator of the resin is ______

Answer 33

Camphorquinone