Why Amalgam Fillings Are Considered Problematic — And Should You Replace Them?

For decades, amalgam fillings were widely used in dentistry all over the world. They’re inexpensive, strong, and long-lasting. But today, more and more patients are asking:
Are amalgam fillings actually safe? Should I replace them with modern alternatives?

Here are the main reasons why amalgam fillings are now considered outdated or even harmful:

1. They contain mercury

Dental amalgam is made up of about 50% elemental mercury, mixed with silver, tin, and copper. Although the mercury is bound within the alloy and considered stable, concerns remain about long-term low-level mercury vapor exposure, especially if the filling is cracked, worn down, or improperly removed.

2. Unattractive appearance

Amalgam fillings are silver-gray in color, and over time they can darken. This makes them easily visible when you talk or smile — especially if placed on front or side teeth. In contrast, modern composite fillings are tooth-colored and blend in naturally with your smile.

3. They can damage tooth structure

Metal expands and contracts with temperature changes (hot and cold foods), which can create microcracks in the surrounding tooth over time. This increases the risk of chipping or fracturing the tooth in the long term.

4. Risk during removal

When an old amalgam filling is drilled out, mercury vapor may be released into the air. That’s why it’s crucial to have removal performed by a skilled dentist using proper safety protocols (such as rubber dams and high-volume suction).

5. Banned or restricted in many countries

Countries like Sweden, Norway, and Germany have restricted or completely banned the use of amalgam fillings — especially in children, pregnant women, and people with kidney disease — due to potential health risks and environmental concerns.

So, should you replace your amalgam fillings?

If your fillings are intact, cause no pain, and show no signs of wear or leakage — there's usually no urgent need to replace them.
However, if they’re old, cracked, discolored, or causing discomfort, it's wise to consult your dentist about replacing them with modern, mercury-free materials.

Today’s dental technologies offer safe, strong, and beautiful alternatives — with no silver smile attached.