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.Management Sciences
Category: Dental Materials
If resin is packed in sandy stage what will be seen in the processed denture ?
A. Distortion
B. Porosity
C. Inhomogeneous colour
D. Increased strength
Boxing wax is also called as________________?
A. Carding wax
B. Inlay wax
C. Utility wax
D. Sticky wax
Which of the following are characteristic feature of high copper amalgam alloy ?
A. Low compressive strength
B. High marginal breakdown
C. Less marginal #
D. High creep
Liquids which become more rigid as the rate of deformation increases is termed as_____________?
A. Thixotropic
B. Pseudoplastic
C. Dilatant
D. Newton
The setting time of irreversible hydrocolloids can be decreased by_____________?
A. Raising the temperature of water used for maxing
B. Using excess water for maxing
C. Lowering the temperature of water used for mixing
D. None of the above
A good adhesive should possess all of the following EXCEPT________________?
A. High adherend wetting
B. High contact angle
C. Low contact angle
D. High flow
The main ingredient in dental plaster in_______________?
A. Calcium sulphate hemihydrate
B. Calcium phosphate
C. Calcium anhydrate
D. Calcium sulphate dihydrate
All of the following statements about cast cobalt alloy are true EXCEPT_____________?
A. They have a modulus of elasticity twice that of gold alloys
B. They are more rigid than gold alloys
C. They have higher ductility than gold alloys
D. They have a lower proportional limit than gold alloys
Agar is prepared from_______________________?
A. Bullock heart
B. Chemicals
C. Sea weed
D. Chick cells
Well premeasured capsules of amalgam can release mercury vapour during_______________?
A. Mulling
B. Carving
C. Condensation
D. Trituration
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