Dental amalgam is a type of filling material that has been used for more than 150 years.

It is strong, long-lasting and affordable.

Amalgam is sometimes called a “silver filling” because of its colour.

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What is dental amalgam made of?

Dental amalgam is a mixture of metals, including:

• Mercury (in liquid form).
• Silver.
• Tin.
• Copper.

These metals are combined to create a hard, durable filling.

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Is dental amalgam safe?

Yes. Extensive scientific research shows that dental amalgam is safe for most people.

There is no reliable evidence that amalgam fillings cause illness or long-term health problems.

This is why they are still used in dentistry around the world.

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Why do some people choose white fillings instead?

White fillings (also called composite fillings) are often chosen because they:

• Match the natural colour of teeth.
• Are less noticeable when you smile.

However, research shows that amalgam fillings:

• Usually last longer.
• Are more resistant to wear, especially on back teeth.

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Why is amalgam being used less often?

The main reason is environmental concern, not patient safety.

Mercury can affect the environment if it is not handled properly. Because of this:

• Many countries are reducing (or “phasing down”) the use of amalgam.
• Dentists now follow strict rules to collect and safely dispose of waste.

Dentistry contributes only a small amount to overall environmental mercury levels. Modern dental practices already use systems that further reduce this.

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Are there restrictions on who can have amalgam?

In some countries, amalgam is not routinely used for:

• Children.
• Pregnant or breastfeeding people.

Your dentist will choose the most suitable material for you and your oral care based on:

• Age.
• Health.
• The position of the tooth.
• Personal preference.

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Should existing amalgam fillings be removed?

In most cases, no.

There is no clinical reason to remove a working amalgam filling unless:

• It is damaged or worn.
• It no longer seals the tooth properly.
• You have a confirmed allergy to one of the materials (which is very rare).

Removing an amalgam filling can briefly release mercury vapour and may weaken the tooth.

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What if I want to change my fillings for cosmetic reasons?

If you want white fillings for appearance:

• It is usually best to wait until the existing filling needs replacing.
• This protects the tooth.
• It is also better for the environment.

White fillings are a good option for appearance, but amalgam remains a reliable choice for many teeth.

If you’re unsure which filling is right for you, talk to your dental team. They can help you weigh up the benefits and make the best decision for your mouth.