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.Management Sciences
Category: Dental Materials
Mercury is toxic because it_____________?
A. Complexes with hemoglobinto form methemoglobin
B. Inhibits hemoglobin synthesis, producing anemia
C. Inhibits anaerobic glycolysis
D. Binds to sulfhydryl groups
Materials which has high compressive strength and low tensile strength is classified with property of________________?
A. Ductility
B. Brittleness
C. Malleability
D. Resilient
Type I gypsum product is also called_______________?
A. Impression plaster
B. Class I stone / Hydrocal
C. Class II stone/Densite
D. Model plaster
The function of a sprue is to_______________?
A. Form an opening of molten metal to enter the mold
B. Help polish cast restorations
C. Eliminate air bubbles on the wax pattern
D. Reproduce fine detail
Die is________________?
A. Impression of single tooth
B. Impression of whole teeth
C. Replica of single tooth
D. Replica of whole teeth
Two in one stage impression materials include______________?
A. Zinc Oxide eugenol impression paste
B. Hydrocolloid impression material
C. Elastomeric impression material
D. All of the above
In a patient with allergy to costume jewelry, which of the following is contraindicated______________?
A. High gold
B. Low gold
C. Palladium – Ag
D. Ni – Cr
Percentage of tin in low copper alloy is______________?
A. 30-35%
B. 26-28%
C. 13-32%
D. 22-30%
Name the accelerator used in Zinc oxide eugenol paste______________?
A. Olive oil
B. Linseed oil
C. Zinc acetate
D. All of these
The main form of iron carbide found in 18-8 steel________________?
A. Martensite
B. Ferrite
C. Austenite
D. Pearlite
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