Medical MCQs

5099 MCQs  (Page 89 of 510)

Green strength with reference to plaster means_____________?
A. Dry strength
B. Compressive strength
C. Strength of dental stone due to green colour
D. The wet strength
Plaster of paris is mixed in________________?
A. Plastic bowl
B. Rubber bowl
C. Glass bowl
D. Metal bowl
Die is________________?
A. Impression of single tooth
B. Impression of whole teeth
C. Replica of single tooth
D. Replica of whole teeth
The main ingredient in dental plaster in_______________?
A. Calcium sulphate hemihydrate
B. Calcium phosphate
C. Calcium anhydrate
D. Calcium sulphate dihydrate
Pyroplastic flow of porcelain is due to___________________?
A. High temperature during glazing
B. Low temperature during glazing
C. Improper condensation
D. High firing temperature
Chemical tempering in porcelains is done to interrupt crack propagation by______________?
A. Transformation toughening
B. Dispersion of crystalline phase
C. Inducing residual compressive strength
D. All of the above