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.Management Sciences
Category: Impression Materials
Most rigid elastomer is___________________?
A. Polyether
B. Polysulphide
C. Addition silicone
D. Condensation silicone
Perforated impression tray are used for_______________?
A. Alginate
B. Zinc oxide-eugenol
C. Agar-agar
D. Impression compound
Impression plaster is_____________?
A. Less compressive than alginate
B. More compressive than alginate
C. As compressive as alginate
D. More compressive than hydrocolloids
Dimensional stability of elastomeric impression material can be given in descending order as_____________?
A. Polysulphide > polyether > Condensation silicone > Addition silicone
B. polyether > Condensation silicone > Polysulphide > Addition silicone
C. Addition silicone > polyether > Polysulphide > Condensation silicone
D. Addition silicone> Condensation silicone > Polysulphide > polyether
Heavy and light body impression materials are use with______________?
A. Mercaptan
B. Silicone
C. Reversible hydrocolloid
D. A and B
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
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