A. Using less water powder ratio
B. Storing the impression under water
C. Prolonged manipulation
D. Using humidor
Related Mcqs:
- 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 - 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 - Rubber base impressions are poured immediately as they_______________?
A. Continue to polymerize
B. Become elastic
C. Show imbibition and syneresis
D. Show gelation - Immediate pouring of impressions is most critical in_____________?
A. Condensation polysillicon
B. Addition Polysilicon
C. Polyether
D. A and B - Hysteresis in a hydrocolloid gel is______________?
A. Moisture absorption
B. Temperature lag between gelation and liquefaction temperature
C. Phenomenon of conversion of gel into sol
D. All of the above - Syneresis seen in hydrocolloid gel is______________?
A. Seen as water loss
B. Water absorption
C. Shrinkage
D. Gelation - The basic constituent of reversible hydrocolloid impression material is________________?
A. Agar
B. Alginic acid
C. Gelatin
D. alginate - Hydrocolloid material, show all except______________?
A. Hysterisis
B. Imbibition
C. Recrytallisation
D. Syneresis - Which one of the following increase the strength and reduce viscosity of agar hydrocolloid impression material_____________?
A. Borax
B. Water
C. Sulfates
D. Carbonates - The best way to remove a hydrocolloid impression from the patient’s mouth is____________?
A. Slight rocking of the impression to disengage it from the undercut
B. Wetting the periphery of the impression with moist cotton to break the peripheral seal
C. Sudden jerking of the impression to prevent tearing
D. Supporting the impression along with the tray to prevent disengaging of the tray alone
