Impression Materials

A. Addition silicone < polyether < polysulfide < condensation silicone
B. Addition silicone < polysulfide < Polyether < condensation silicone
C. condensation silicone < polyether < polysulfide < Addition silicone
D. condensation silicone < polysulfide < polyether < Addition silicone

A. After the start of appearing elastic properties of impression material
B. Just after the start of appearing elastic properties of impression material
C. The time for start of mixing till just before the start of appearing elastic properties of impression material
D. Loss of lusture of impression material

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

A. Polymerization occurs with repeated elimination of small molecules
B. Polymerization occurs with elimination of single byproduct
C. By condensation of repeated molecules of monomers
D. Condensation does not occur at all

A. Using less water powder ratio
B. Storing the impression under water
C. Prolonged manipulation
D. Using humidor

A. Mineral oil
B. Surfactant
C. Water
D. Plasticizer

A. Retarder
B. Modifier
C. Plasticier
D. Accelerator

A. Glycol
B. Glyecrol
C. Glutamic acid
D. alcohol

A. Boiling
B. Condensation
C. Vulconization
D. Chain lengthening

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