Elastomeric Impression MAterials

Question 1

Base of Polysulfide Materials

Answer 1

polysulfide polymer

Question 2

Catalyst of Polysulfide Materials

Answer 2

Lead dioxide

Question 3

Chemistry of Polysulfide Materials

Answer 3

Condensation - water produced

Question 4

Base of Condensation Silicone

Answer 4

Dimethyl siloxane

Question 5

Catalyst of Condensation Silicone

Answer 5

Tin octoate and an alkyl silicate

Question 6

Chemistry of Condensation Silicone

Answer 6

Condensation - Alcohol produced

Question 7

Catalyst of Addition Silicone

Answer 7

Chloroplatinic acid catalyst

Question 8

Chemistry of Addition Silicone

Answer 8

Addition - some produce hydrogen

Question 9

Catalyst of Polyether

Answer 9

2,5-dichlorobenzene sulfonate (potential allergic rxn)

Question 10

Chemistry of Polyether

Answer 10

Addition rxn - no by-product

Question 11

Which is easier to mix due to lower initial viscosity?

Answer 11

Silicones

Question 12

Which has the longest setting time?

Answer 12

Polysulfides

Question 13

Which has the smallest dimensional change?

Answer 13

Silicones

Question 14

Which has the largest dimensional change?

Answer 14

Condensation silicones

Question 15

Which has the best recovery?

Answer 15

Addition Silicones

Question 16

Which is the stiffest?

Answer 16

Polyether

Question 17

Order of Hardness

Answer 17

Polyether, addition silicones, condensation silicones, polysulfides

Question 18

What has the highest resistance?

Answer 18

Polysulfides