Impression Materials

A. Impression plaster
B. Irreversible hydrocolloid
C. Reversible hydroollioid
D. None of the above

A. Impression plaster
B. Impression paste
C. Silicon impression material
D. None of the above

A. CaCl2
B. Zinc acetate
C. Alcohol
D. Glycerine

A. Aromatic sulfonate esters
B. Stannous octate
C. Platinum salt catalyst
D. Lead dioxide

A. Custom trays facilitate uniform contraction of impression material
B. Custom trays require less impression material
C. Stock trays may be short in the flange area
D. Impressions made n the custom trays are easier to remove from the mouth

A. Olive oil
B. Linseed oil
C. Zinc acetate
D. All of these

A. Addition silicone
B. Polysulphide
C. Polyetner
D. Condensation silicone

A. Liquefies between 71 – 100°C
B. Solidfies between 50 – 70°C
C. Facilitates fabrication of metal dyes
D. Cannot register fine surface details

A. Borax
B. Water
C. Sulfates
D. Carbonates

A. 100 ml of water to 60 gms of powder
B. 40 ml of water to 40 gms of powder
C. 40 ml of water to 15 gms of powder
D. 15 ml of water to 40 gms of powder