Impression Materials

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

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

A. Continue to polymerize
B. Become elastic
C. Show imbibition and syneresis
D. Show gelation

A. Thin mix of plaster of paris
B. Zinc oxide eugenol impression paste
C. Free flowing wax
D. Reversible hydrocolloids

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

A. Bullock heart
B. Chemicals
C. Sea weed
D. Chick cells