Powders of dental plaster and dental stone differ mainly in____________?

Related Mcqs:

Model plaster (white) used to cast study models before mixing with water, is largely composed of____________?

A. CaO B. CaCO3 C. (CaSO4)2-½H2O D. CaSO4-2H2O...

The β (Beta) hemihydrate of gypsum requires more water to float its powder particles because______________?

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...

ADA specification number of gypsum products are described under____________?

A. 1 B. 4 C. 12 D. 25...

Type I gypsum product is also called_______________?

A. Impression plaster B. Class I stone / Hydrocal C. Class II stone/Densite D. Model plaster...

The setting expansion of gypsum products can be reduced by________________?

A. Increased spatulation B. Adding potassium sulfate C. Less water powder ratio D. Allowing setting under water...