A. Impression wax
B. Modelling compound
C. Hydro-colloid
D. Hydro cal
A. Mechanical action of saliva
B. Physical change
C. Evolution
D. Chemical change
A. Irreversible hydrocolloid
B. Reversible hydrocolloid
C. Impression plaster
D. Metallic oxide paste
Which material undergoes hysteresis ? Read More »
Dental Materials, Impression Materials, Medical Mcqs A. Raising the temperature of water used for maxing
B. Using excess water for maxing
C. Lowering the temperature of water used for mixing
D. None of the above
The setting time of irreversible hydrocolloids can be decreased by_____________? Read More »
Dental Materials, Impression Materials, Medical Mcqs A. Continue to polymerize
B. Become elastic
C. Show imbibition and syneresis
D. Show gelation
Rubber base impressions are poured immediately as they_______________? Read More »
Dental Materials, Impression Materials, Medical Mcqs A. Thin mix of plaster of paris
B. Zinc oxide eugenol impression paste
C. Free flowing wax
D. Reversible hydrocolloids
The most mucostatic impression material is_______________? Read More »
Dental Materials, Impression Materials, Medical Mcqs 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
A. Silicone
B. Agar-agar
C. Impression paste
D. Impression plaster
A. Decrease flow
B. Increase flow
C. Accelerate reaction
D. Decrease irritation due to eugenol
Lenolin is added is ZOE paste to______________? Read More »
Dental Materials, Impression Materials, Medical Mcqs A. Bullock heart
B. Chemicals
C. Sea weed
D. Chick cells
Agar is prepared from_______________________? Read More »
Dental Materials, Impression Materials, Medical Mcqs