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.Management Sciences
Category: Impression Materials
All of the following can be used to slow down the setting of Zinc oxide eugenol impression paste EXCEPT_________________?
A. Adding a small amount of glycerine
B. Adding a small amount of water
C. Altering the amounts of the two pastes used
D. Cooling mixing slab
The advantage of ZOE impression paste_______________?
A. Has dimensional stability
B. Does not adhere to tissues
C. Is easy manipulation
D. Does not require special trays
Which one of the following impression materials is elastic, sets by a chemical reaction and is catalyzed by chloroplatinic acid_______________?
A. Condensation silicone
B. Polyether
C. Polysulfide
D. Poly vinyl siloxane
The impression for a diagnostic cast of a partial edentulous mouth should be taken in_______________?
A. Impression wax
B. Modelling compound
C. Hydro-colloid
D. Hydro cal
A technique of combining reversible and irreversible hydrocolloid that could bond to irreversible hydrocolloid is known as________________?
A. Injecting technique
B. Laminate technique
C. Immersion technique
D. Tempering technique
Which of the following is correct regarding chemical setting of condensation silicone_______________?
A. Polymerization occurs with repeated elimination of small molecules
B. Polymerization occurs with elimination of single byproduct
C. By condensation of repeated molecules of monomers
D. Condensation does not occur at all
To make the vinyl Polysiloxane hydrophilic the following is added_______________?
A. Mineral oil
B. Surfactant
C. Water
D. Plasticizer
Wash or corrective impression is done by______________?
A. Impression plaster
B. Impression paste
C. Alginate
D. Rubber base impression material
Most mucostatic among the following_____________?
A. Impression compound
B. Alginate
C. ZOE paste
D. Elastomer
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