Fillings are used to repair a cavity in your tooth caused by decay. Most common tooth fillings used are: 

• Composite fillings (tooth coloured)

• Amalgam (silver coloured)

• Glass ionomer (tooth coloured)

What are composite fillings?

These are white coloured fillings essentially made of resin. After the tooth is prepared, the filling is bonded onto the area and a light shone onto it to set it. The dentist will choose a shade to match your own teeth, although over time staining can happen.

What are amalgam fillings?

Amalgam fillings are silver coloured. They are made by combining mercury and a silver alloy (50% mercury, 35% silver, and 15% tin, copper and other metals). Amalgam is long lasting and hard wearing and has been used in fillings for at least 150 years.

What are glass ionomer fillings?

Glass ionomer fillings form a chemical link with the tooth. They may also release fluoride, which helps to prevent further tooth decay. This type of filling is fairly weak.