Masterial causing minimum tissue distortion is______________?
A. Polysulphide
B. Silicone
C. Impression plaster
D. Zinc oxide eugenol paster
Dental Materials
Inelastic impression material is_____________?
Inelastic impression material is_____________?
A. Impression compound
B. Alginate
C. Agar-agar
D. Polyether
One of the most important advantages of truly elastic impression material would be its capacity for______________?
One of the most important advantages of truly elastic impression material would be its capacity for______________?
A. Close adaptation to soft tissues
B. With drawl without permanent distortion
C. Reproduction of surface details
D. Compatibility with gypsum products
Impression compound base_____________?
Impression compound base_____________?
A. Low thermal conductivity
B. Crystalline structure
C. Formation of cross linkage with heating
D. High fusion temperature
Hypersensitivity reactions like contact dermatitis can be caused by______________?
Hypersensitivity reactions like contact dermatitis can be caused by______________?
A. polysulfides
B. Condensation silicones
C. addition silicones
D. Polyether
Trisodium phosphate in alginate acts are_______________?
Trisodium phosphate in alginate acts are_______________?
A. Retarder
B. Reactor
C. Accelerator
D. Plasticizer
Which of the following impression material is elastic________________?
Which of the following impression material is elastic________________?
A. Impression compound
B. Zinc Oxide eugenol (ZOE) paste
C. Wax
D. Polyvinyl siloxane
The American dental association (ADA) specification number for non-aqueous elastomeric dental impression material is______________?
The American dental association (ADA) specification number for non-aqueous elastomeric dental impression material is______________?
A. 19
B. 20
C. 21
D. 26
Elastomers are_________________?
Elastomers are_________________?
A. Alginate
B. Agar
C. Polyethers
D. Imp. Compound
Tear strength for impression material is highest for__________?
Tear strength for impression material is highest for__________?
A. Condensation silicone
B. Alginate
C. Polysulfide
D. Addition silicone