A. Slower the hygroscopic expansion
B. Greater the hygroscopic expansion
C. Normal setting expansion
D. No setting expansion
Finer particle size of silica______________? Read More »
Dental Materials, Gypsum Products, Medical Mcqs A. 1
B. 4
C. 12
D. 25
ADA specification number of gypsum products are described under____________? Read More »
Dental Materials, Gypsum Products, Medical Mcqs A. Modify setting time
B. Modify setting expansion
C. Modify strength
D. Decrease the porosity
Modiffiers are added to gypsum mainly to_______________? Read More »
Dental Materials, Gypsum Products, Medical Mcqs A. H2O interferes with hygroscopic expansion
B. H2O inhibits polymerization of dental resin
C. H2O interferes with Crystallization of dihydrate
D. Gypsum is slightly soluble in water and the surface of the cast will be eroded
Placing cast under tap water is to be avoided as______________? Read More »
Dental Materials, Gypsum Products, Medical Mcqs A. They are more regular in shape and dense
B. They are more regular in shape and highly porous
C. They are more irregular in shape and porous
D. They are more dense and prismatic in shape
A. Stone
B. Plaster
C. Investment
D. All of the above
Which is gypsum product_______________? Read More »
Dental Materials, Gypsum Products, Medical Mcqs A. Sodium fluoride
B. Potassium fluoride
C. Potassium sulfate
D. Aluminium sulfate
The most commonly used accelerator in gypsum product is___________________? Read More »
Dental Materials, Gypsum Products, Medical Mcqs A. Investment
B. Hydrocolloids
C. Amalgam
D. Silicate
The hygroscopic technique is associated with______________? Read More »
Dental Materials, Gypsum Products, Medical Mcqs A. Setting time
B. Setting expansion
C. Hardness of the set product
D. None of the above
A. Calcium sulphate hemihydrate
B. Calcium phosphate
C. Calcium anhydrate
D. Calcium sulphate dihydrate
The main ingredient in dental plaster in_______________? Read More »
Dental Materials, Gypsum Products, Medical Mcqs