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.Management Sciences
Category: Impression Materials
Which of the following is used as surface hardener in Impression material ?
A. 2% Potassium sulfate
B. 0.2% Potassium sulfate
C. 2% sodium sulfate
D. 4% Potassium sulfate
Lenolin is added is ZOE paste to______________?
A. Decrease flow
B. Increase flow
C. Accelerate reaction
D. Decrease irritation due to eugenol
Hydrocolloid material, show all except______________?
A. Hysterisis
B. Imbibition
C. Recrytallisation
D. Syneresis
Linear contraction of elostomeric impression with passage of time is highest in______________?
A. Addition silicone
B. Polysulphide
C. Polyetner
D. Condensation silicone
Impression compound has which of the following characteristic property ?
A. Low thermal conductivity
B. High flow property
C. Degradation is presence of moisture
D. Remain distortion free up to 72 hrs. pouring can be safely delayed
The cross linking agent of polysulphide rubber base impression material is______________?
A. Aromatic sulfonate esters
B. Stannous octate
C. Platinum salt catalyst
D. Lead dioxide
Which of the following is not affected by saliva ?
A. Impression plaster
B. Impression paste
C. Silicon impression material
D. None of the above
The basic constituent of reversible hydrocolloid impression material is________________?
A. Agar
B. Alginic acid
C. Gelatin
D. alginate
Hardening solutions are used with impression made of________________?
A. Hydrocolloid
B. Impression compound
C. Elastomer
D. Zinc oxide eugenol
Brush heap structure is found in______________?
A. Zinc oxide impression material
B. Agar
C. Condensation silicone
D. Polyether
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