Amalgam is a filling made from a combination of metals, including mercury, silver, tin, and copper. It is also known as the “silver-colored” filling.
Composite fillings are tooth-colored fillings made of special plastics called resin-based composites.
Common CDT Codes for Restorations:
-  Amalgam - one surface, primary or permanent
-  Amalgam - two surfaces, primary or permanent
-  Amalgam - three surfaces, primary or permanent
-  Resin-based composite - one surface, anterior
-  Resin-based composite - two surfaces, anterior
-  Resin-based composite - three surfaces, anterior
-  Resin-based composite - four or more surfaces or involving incisal angle (anterior)
-  Resin-based composite - one surface, posterior
-  Resin-based composite - two surfaces, posterior
-  Resin-based composite - three surfaces, posterior
-  Resin-based composite - four or more surfaces, posterior
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