A. Have less marginal breakdown
B. Are workable at lower Hg-alloy ratio
C. Have a higher ratio of tensile to compressive strength
D. Have less resistance to tarnish and corrosion
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Related Mcqs:
- The percentage of copper in high copper alloy is______________?
- A. 10-12% B. 0-6% C. 13-30% D. 20-30%...
- Compare to conventional amalgams, spherical amalgams_______________?
- A. Require more mercury B. Require heavy compection forces C. Have longer setting times D. None of the above...
- Copper content in low copper amalgam is________________?
- A. 6% B. 12-30% C. 29% D. 19%...
- Powders of dental plaster and dental stone differ mainly in____________?
- A. Solubility B. Shelf life C. Chemical formula D. Particle porosity...
- The main difference between dental stone and dental plaster is______________?
- A. Chemical composition B. Self life C. Sharpe and size of particles D. Solubility in water...
- The American dental association (ADA) specification number for non-aqueous elastomeric dental impression material is______________?
- A. 19 B. 20 C. 21 D. 26...
- In a high copper amalgam the phase, which is eliminated is_______________?
- A. Gamma 1 B. Gamma 2 C. Gamma 1 and 2 D. No phase is eliminated...
- High copper amalgam can be produced_____________?
- A. From smooth atomized particles B. From irregular and spherical particles C. From lathe cut particles D. From traditional alloy particles...
- Which of the following are characteristic feature of high copper amalgam alloy ?
- A. Low compressive strength B. High marginal breakdown C. Less marginal # D. High creep...
- Which is not true about high copper amalgam alloys______________?
- A. Low tensile and compressive strength B. Low Hg: Alloy ratio C. High tensile strength D. Low creep...
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