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If you need a filling, you will be confronted with the possibility of getting amalgam fillings, or white fillings. Most places in England do not carry amalgam fillings anymore, and it is no surprise: they contain mercury, which is very bad for the environment and cannot be mined in a safe manner. But does that fact make white fillings, or tooth coloured fillings as they are sometimes called necessarily better? There are a number of things to look at in a tooth filling to determine how good it is, and we shall take a look at them below.

What to look for in a filling

Tooth fillings of any kind should be able to do three things: stop bacterial infections from spreading, seal up affected bits of tooth material, and last a long time. If we take these three things into account, there isn’t that much difference between the fillings themselves. Sure amalgam fillings last a lot longer than tooth coloured white fillings, but they have the chance of not filling up the cavity entirely and having an infection on the sides of the tooth fillings, which will require new fillings. Sure amalgam is more antibacterial, but white fillings seal up the hole perfectly. So really, while one filling may be stronger in some respects than the other, there is very little difference. Here is a breakdown:

Durability: Amalgam fillings

Antibacterial strength: Same

Sealing: Tooth coloured fillings

The Crucial Difference

The crucial difference that makes white fillings undoubtedly better than amalgam fillings lies in the chemical makeup of the fillings themselves. Amalgam fillings leach mercury into your system and they also have trace amounts of lead and other harmful heavy metals. They conduct electricity and can be harmful to your central nervous system. Besides that, mining mercury is extremely bad for workers and the environment, and can as it is a liquid, it can leach into aquifers and contaminate soil for centuries. This crucial difference makes amalgam less desirable. To combat the environmental exploitation associated with the mercury industry, the Minamata convention was signed, and the UK is a part of it.

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