Category: Impression Materials

A. Reducing the diatomaceous earth
B. Adding heavy metal salts
C. Coating with dihydric alcohol
D. Altering the matrix

A. Impression compound
B. Impression paste
C. Addition silicone
D. Alginate

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

A. Polysulphide
B. Silicone
C. Impression plaster
D. Zinc oxide eugenol paster

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. Imbibition
B. Syneresis
C. Hysteresis
D. Gelation

A. Single mix material have higher viscosity
B. Shear thinning is related to viscosity of non phase impression material
C. Improper mixing of material can cause permanent deformation of impression
D. Putty – wash technique of impression reduces dimensional change of setting

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

A. 2% Potassium sulfate
B. 0.2% Potassium sulfate
C. 2% sodium sulfate
D. 4% Potassium sulfate

A. Decrease flow
B. Increase flow
C. Accelerate reaction
D. Decrease irritation due to eugenol