A. More water
B. Less water
C. no water
D. None of the above
Dental Materials
Dental Materials Mcqs for preparation. These Mcqs are helpful for Medical students. Dental Materials Multiple Choice Questions (MCQ) for entrance examinations and other competitive examinations for all Experienced, Freshers and Students.
A. Class II stone
B. Densite
C. Class I stone or hydrocal
D. Model or lab plaster
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
A. To regulate the setting expansion
B. Regulate setting time
C. Acts as retarder
D. None
A. Slower the hygroscopic expansion
B. Greater the hygroscopic expansion
C. Normal setting expansion
D. No setting expansion
A. 1
B. 4
C. 12
D. 25
A. Modify setting time
B. Modify setting expansion
C. Modify strength
D. Decrease the porosity
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
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
