Reduction in the fusion temperature of dental gold casting alloys is caused by presence of______________?

Related Mcqs:

1. Modern dental noble metal casting alloys generally have equiaxed fine grain structures because of the incorporation of small amounts of______________?

   A. Chromium B. Indium C. Irridium D. Palladium...

2. The gold alloys used for casting contain at least…. percent of precious metal according to ADA specification number 5________________?

   A. 55 B. 65 C. 75 D. 85...

3. The castability of chromium-cobait base metal alloys when compared to gold based noble metal alloys is_______________?

   A. More B. Less C. Equal D. Depends on the alloy type...

4. In type II gold alloys _______ Karat gold is used?

   A. 24 K B. 22 K C. 18 K D. 10 K...

5. Crucible indicated for casting base metal alloys is______________?

   A. Carbon crucible B. Clay crucible C. Quartz crucible D. High melting plastic crucible...

6. The deoxidizing agent added to dental alloys is______________?

   A. Palladium B. Silver C. Copper D. Zinc...

7. The term ordered hardening heat treatment used in which of the following dental alloys ?

   A. Gold-Copper B. Nickel-Chromium C. Nickel-Titanium D. Silver-Palladium...

8. Addition of large amounts of platinum to a casting gold alloy will________________?

   A. Decrease its strength and ability to be hardened B. Decrease its tarnish resistance C. Increase its fusion temperature D. Redden the alloy...

9. Compared with dental alloys, CERAMICS show____________________?

   A. High ductility B. High hardness C. Low esthetic value D. Susceptibility to brittle fracture...

10. Resistance to corrosion in a cobalt-chrome casting is due to presence of_______________?

    A. High quality iron B. Chrome C. Cobalt D. Nickel...