Dental Materials MCQs

Page No. 27

Tear strength for impression material is highest for__________?


aCondensation silicone

✖


bAlginate

✖


cPolysulphide

✓


dAddition silicone

✖


View Answer Polysulphide

Elastomers are_________________?


aImpression compound

✖


bAlginate

✖


cAgar

✖


dPolyethers

✓


View Answer Polyethers

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


a19

✓


b20

✖


c21

✖


d26

✖


View Answer 19

Which of the following impression material is elastic________________?


aImpression compound

✖


bZinc Oxide eugenol (ZOE) paste

✖


cWax

✖


dPolyvinyl siloxane

✓


View Answer Polyvinyl siloxane

Trisodium phosphate in alginate acts are_______________?


aRetarder

✓


bReactor

✖


cAccelerator

✖


dPlasticizer

✖


View Answer Retarder

Hypersensitivity reactions like contact dermatitis can be caused by______________?


aPolysulphide

✖


bCondensation silicones

✖


cAddition silicones

✖


dPolyether

✓


View Answer Polyether

Impression compound base_____________?


aLow thermal conductivity

✓


bCrystalline structure

✖


cFormation of cross linkage with heating

✖


dHigh fusion temperature

✖



One of the most important advantages of truly elastic impression material would be its capacity for______________?


aClose adaptation to soft tissues

✖


bWith drawl without permanent distortion

✓


cReproduction of surface details

✖


dCompatibility with gypsum products

✖



Inelastic impression material is_____________?


aImpression compound

✓


bAlginate

✖


cAgar-agar

✖


dPolyether

✖


View Answer Impression compound

Masterial causing minimum tissue distortion is______________?


aPolysulphide

✖


bSilicone

✖


cImpression plaster

✓


dZinc oxide eugenol

✖


View Answer Impression plaster

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