Similar questions:
Dental amalgam
All of the aboveNDEB released questions set 6
The main reason for adding copper to a dental amalgam alloy is to
reduce the tin-mercury phase.NDEB released questions set 6
Dental amalgams that are made from alloys containing 6 percent copper, compared to those made from alloys containing 13 percent copper
1. have higher concentration of the tin-mercury phase.
2. are more resistant to tarnish and corrosion.
3. demonstrate less creep or flow.
4. generally have lower compressive strength.
5. demonstrate less marginal breakdown in clinical service.
(1) and (4)
NDEB released questions set 6
In low copper (e.g. Cu = 4% by weight in the alloy powder) dental amalgam restorations, the most susceptible phases to corrosion are
tin mercury.NDEB released questions set 12
Dental amalgams that are made from alloys containing 6% copper, compared to those made from alloys containing 13% copper
1. are more resistant to tarnish and corrosion.
2. demonstrate less creep or flow.
3. demonstrate less marginal breakdown in clinical service.
4. generally have lower compressive strength.
(4) only
Planets 31
The main reason for adding copper to a dental amalgam alloy is to
reduce the tin-mercury phase.Planets 31
Dental amalgam
has a satisfactory resistance to compressive stressPlanets 31
Dental amalgam restorations
show decreased corrosion and marginal breakdown when the copper tin phase is increasedPlanets 30
Which of the following phases in the setting reaction of dental amalgam is weak and corrosion-prone?
2.Planets 28
When compared to dental amalgams made from lathe cut particles, dental amalgams made from spherical particles
set more quickly.Planets 26
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