A. Seen as water loss
B. Water absorption
C. Shrinkage
D. Gelation
Syneresis seen in hydrocolloid gel is______________? Read More »
Dental Materials, Impression Materials, Medical Mcqs A. Agar-agar
B. Alginate
C. Zinc oxide eugenol
D. Plaster of paris
Best material for duplicating cast is_______________? Read More »
Dental Materials, Impression Materials, Medical Mcqs A. Marcaptan group
B. Hydroxyl group
C. Silane group
D. Virryl group
A. Moisture absorption
B. Temperature lag between gelation and liquefaction temperature
C. Phenomenon of conversion of gel into sol
D. All of the above
Hysteresis in a hydrocolloid gel is______________? Read More »
Dental Materials, Impression Materials, Medical Mcqs 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
A. They evolve hydrogen when cast if they are not fully cured
B. They exhibit a very low setting shrinkage
C. They have a lower tear resistance than polysulphide rubbers
D. They set by condensation polymerisation
A. Chemical reaction
B. Cold
C. Heat
D. Pressure
The Zinc oxide-eugenol impression pastes harden by________________? Read More »
Dental Materials, Impression Materials, Medical Mcqs