Dental-filling alloy is a solution of _____.?
A)liquid copper in solid brass
B)liquid mercury in solid copper
C)liquid copper in solid tungsten
D)liquid sodium in solid potassium
E)liquid mercury in solid silver
- ZirpLv 71 month ago
well, it used to be lead and mercury, but those aren't used anymore because of health-risks, and because toothcoloured fillings look better.
Silver and gold used to be in use too
Note that liquid sodium or copper would be way too hot to put inside a tooth of a living human
- Lord BaconLv 71 month ago
It is mostly mercury (about 50%) and silver (variable amount) with lesser amounts of other metals (copper, tin)
- JimLv 71 month ago
E used to be true, I think it might not be allowed now.