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.Management Sciences
Category: Dental Materials
Amalgam means_____________?
A. A metallic powder composed of silver, tin, copper and zinc
B. An alloy of two or more metals one of which is mercury
C. An alloy of two or more metals that have been dissolved in each other in the molten state
D. A metallic substances in powder or tablet from that is mixed with mercury
One bottle system of adhesive resins_____________?
A. 4th generation bonding agents
B. Separate etching step not required
C. Separate etching step is still required
D. Contains only primer
To make the vinyl Polysiloxane hydrophilic the following is added_______________?
A. Mineral oil
B. Surfactant
C. Water
D. Plasticizer
Chronic mercury toxicity results from_____________?
A. Ingestion while removing old amalgam
B. Skin contact
C. Mercury vapour
D. All of the above
Accelerators and retarders are used with gypsum products mainly to control_______________?
A. Setting time
B. Setting expansion
C. Hardness of the set product
D. None of the above
Which is the cement with adhesive properties ?
A. Zinc oxide eugenol
B. Zinc polycarboxylate
C. SIlicate
D. Glass ionomer
E. Both B & D
Finer particle size of silica______________?
A. Slower the hygroscopic expansion
B. Greater the hygroscopic expansion
C. Normal setting expansion
D. No setting expansion
Dental porcelains are crystalline materials of________________?
A. Rubber
B. Plastic
C. Organic substances
D. Glass
Wash or corrective impression is done by______________?
A. Impression plaster
B. Impression paste
C. Alginate
D. Rubber base impression material
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