Tooth Colored Fillings In the past, cavities were filled with a mixture of metals, including silver and mercury (amalgam fillings).
But today, that is changing as you can get your cavities, as well as any other smaller areas in your teeth, filled with composite fillings.
Composite fillings are made from resins that match your tooth color. They look and react more like your natural teeth. A major advantage of composite fillings is they require less of your natural tooth structure to be removed as they rely on adhesive bonding to bond to your teeth.