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.Management Sciences
Category: Impression Materials
By product of condensation reaction between silicone base and alkyl silicate in presence of tin octate_______________?
A. Ethyl alcohol
B. Glycol
C. Acetate
D. Propanolol
Best impression material to be used for securing impression after crown preparation_______________?
A. Alginate
B. Agar
C. Elastome
D. Zno paste
Alginate impression material is________________?
A. Non-elastic impression material
B. Thermoplastic impression material
C. More mucostatic than ZOE
D. Less mucostatic than ZOE
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
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