A. Impressions
B. Casts
C. Die
D. Casts and Dies
Gypsum is used for________________? Read More »
Dental Materials, Gypsum Products, Medical Mcqs A. Dry strength
B. Green strength
C. Water strength
D. Compressive strength
A. Which undergoes rapid expansion
B. In which accelerators or retarders have been added according to need
C. In which amount of water of hydration is controlled
D. In which the crystals are all of uniform size
Balanced stone is dental stone_______________? Read More »
Dental Materials, Gypsum Products, Medical Mcqs A. Plaster of paris
B. Soluble plaster
C. Anti – expansion solution
D. Die stones
Impression plaster containing potato starch is called______________? Read More »
Dental Materials, Gypsum Products, Medical Mcqs A. Solubility
B. Shelf life
C. Chemical formula
D. Particle porosity
Powders of dental plaster and dental stone differ mainly in____________? Read More »
Dental Materials, Gypsum Products, Medical Mcqs A. More water
B. Less water
C. no water
D. None of the above
Beta hemihydrate particles absorb______________? Read More »
Dental Materials, Gypsum Products, Medical Mcqs A. Class II stone
B. Densite
C. Class I stone or hydrocal
D. Model or lab plaster
Type III Dental gypsum is__________________? Read More »
Dental Materials, Gypsum Products, Medical Mcqs A. Alpha – hemihydrates
B. Beta – hemihydrates
C. Calcium sulphate dihydrate
D. Orthorhombic anhydrate
A. Tensile strength
B. Wet strength
C. Green strength
D. compressive strength
The strength of gypsum prouducts is generally expressed in terms of______________? Read More »
Dental Materials, Gypsum Products, Medical Mcqs A. To regulate the setting expansion
B. Regulate setting time
C. Acts as retarder
D. None
The function of 2% potassium sulphate in a gypsum product is_____________? Read More »
Dental Materials, Gypsum Products, Medical Mcqs