Question: Impression compound base_____________?

• 1. Low thermal conductivity
• 2. Crystalline structure
• 3. Formation of cross linkage with heating
• 4. High fusion temperature

Question: Hypersensitivity reactions like contact dermatitis can be caused by______________?

• 1. polysulfides
• 2. Condensation silicones
• 3. addition silicones
• 4. Polyether

Question: Trisodium phosphate in alginate acts are_______________?

• 1. Retarder
• 2. Reactor
• 3. Accelerator
• 4. Plasticizer

Question: Which of the following impression material is elastic________________?

• 1. Impression compound
• 2. Zinc Oxide eugenol (ZOE) paste
• 3. Wax
• 4. Polyvinyl siloxane

Question: The American dental association (ADA) specification number for non-aqueous elastomeric dental impression material is______________?

• 1. 19
• 2. 20
• 3. 21
• 4. 26

Question: Elastomers are_________________?

• 1. Alginate
• 2. Agar
• 3. Polyethers
• 4. Imp. Compound

Question: Tear strength for impression material is highest for__________?

• 1. Condensation silicone
• 2. Alginate
• 3. Polysulfide
• 4. Addition silicone

Question: Trisodium phosphate added to alginate contributes towards_______________?

• 1. increasing the working time of alginate impression material
• 2. Acts as an accelerator
• 3. Initiating the setting reaction
• 4. Provides gel strength

Question: Agar syringe material can be used with/as______________?

• 1. Agar
• 2. Alginate impression material
• 3. Both of the above
• 4. Primary impression

Question: Impression compound has which of the following characteristic property ?

• 1. Low thermal conductivity
• 2. High flow property
• 3. Degradation is presence of moisture
• 4. Remain distortion free up to 72 hrs. pouring can be safely delayed