Amalgam Flashcards
These particle give more fluid mix which is easy to shape and condense, can be carved immediately and take 3h to reach occlusal strength
Spheroidal or mixture of spheroidal and lathe cut
Preferred for pinned restorations
Spheroidal
> 6 to reach occlusal strength
Lathe cut
The weakest Sn – HG or gamma 2 Phase of the set amalgam could be eliminated by increasing the proportion of this material
Copper
The percentage of copper added to amalgam to eliminate the weakest phase of set amalgam
10-30%
This composition of alloy is more resistant to tarnishing
Silver tin copper
The first conventional alloys introduced had a low copper content of this percent
5%
Preparation should be Overfilled so that
The Mercury rich Layer is remote by carving
Burnishing is the recommended in order to prevent
Marginal leakage
Maximum strength of amalgam after restoration
24h
Silver - 68%
Tin- 28%
Copper - 4%
Zinc - 0-2%
Conventional amalgam
Silver - 60%
Tin 27%
Copper 13%
Zinc 0
High copper
Microleakage can be reduced by this conventional cavity varnish
Copalite
Microleakage can be reduced by this bonding agent in the interim
Amalgambond or panavia
Allergy due to amalgam constituents
Lichenoid eruptions