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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