Amalgam is a alloy of 2 or more metal. One of these is mercury. Amalgam is prepared by combination of alloy with mercury through a process called amalgamation.
The unset mixture is then packed within prepared cavity where it hardened by crystallization.
- Handling is easy
- Wear resistance
- Wide range of application
- Favourable long term clinical result
- Lower cost than composite resin
- Biologically stable and accepted
- Economical restorative materials
- Poor aesthetics
- Non insulating
- Excessive cavity cutting is required because of poor strength
- More difficult to tooth preparation
- Initial marginal leakage
- Galvanic current can be produced in association with gold filling or same restoration with non-uniform condensation.
- Oral lichen planus is also be reported with silver amalgam restoration.