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WorksheetsDental Amalgam Quiz
Total questions: 10
Worksheet time: 5mins
Initial setting time of silver amalgam
5 -6 mins
10 mins
1 hour
24 hours
Final setting time of silver amalgam
5 -6 min
10 mins
1 hour
24 hours
Condensation pressure for silver amalgam
3 psi
10 psi
5 psi
30 psi
In non zinc containing Silver amalgam alloy, percentage of zinc present is _____
less than 0.02%
more than 0.1%
Less than 0.01%
More than 0.02%
Define Amalgam
An alloy of two or more metals that have been dissolved in each other in the molten state
A metallic powder composed of silver, tin, copper and zinc
An alloy of two or more metals in one of which is mercury
Metallic substances in powder or tablet from that is mixed with mercury
Strongest phase in setting of silver amalgam
γ1 phase
γ2 phase
γ phase
η phase
Weakest phase in setting of silver amalgam
γ1 phase
γ2 phase
γ phase
η phase
Elimination of weakest phase in silver amalgam can be achieved by using
Low copper alloy
High copper alloy
Zinc containing alloy
Zinc free alloy
Delayed expansion is due to
Contamination of zinc containing alloys by moisture
Contamination of zinc free alloys by moisture
Contamination of tin containing alloys by moisture
Contamination of tin free alloys by moisture
______ in amalgam alloy decreases expansion?
Copper
Zinc
Silver
Tin
