A. Plaster of paris
B. Soluble plaster
C. Anti – expansion solution
D. Die stones
Related Mcqs:
- Impression plaster is_____________?
A. Less compressive than alginate
B. More compressive than alginate
C. As compressive as alginate
D. More compressive than hydrocolloids - Alginate impression material is similar to Agar-agar impression material in the following respect________________?
A. Gelation increase in both on increase in temperature
B. Mixing time is increased to reduce the setting time
C. Deformation during removal of impression occurs due to distortion of gel fibers
D. Both can be re-used for fresh impressions - Which of the following impression materials is easy to pour and difficult to remove the stone cast from the impression ?
A. Addition polysilicone
B. Condensation polysilicone
C. Polyether
D. Polysulfide - Best impression material to be used for securing impression after crown preparation_______________?
A. Alginate
B. Agar
C. Elastome
D. Zno paste - Agar impression materials differ from alginate impression materials in that the former sets by_______________?
A. Mechanical action of saliva
B. Physical change
C. Evolution
D. Chemical change - Starch is considered to be less cariogenic than monosaccharides and disaccharides because it_______________?
A. Does not diffuse through plaque
B. Is rapidly hydrolysed in the mouth
C. Enhances remineralisation
D. Raises the PH in the oral cavity - 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 - Powders of dental plaster and dental stone differ mainly in____________?
A. Solubility
B. Shelf life
C. Chemical formula
D. Particle porosity - Plaster of paris _____________?
A. Is wet calcined hemihydrate
B. Has porous and irregular crystals
C. Is a – hamihydrate
D. Has a W / P of 0.2