Amalgam Fillings - Why Are People Replacing Them?

For decades, dental amalgam fillings, often called "silver fillings", were the go-to solution for treating cavities. However, in recent years, many people have been opting to replace them with white composite fillings due to health concerns, aesthetics, and advancements in dental materials. In this article, we’ll explore what amalgam fillings are, why they’ve been widely used, and the reasons behind the growing trend of replacing them.

What Are Amalgam Fillings?

Amalgam fillings are made from a mixture of metals, including silver, mercury, tin, and copper. The mercury content (about 50%) helps bind the other metals together, making the filling strong and durable. Amalgam has been used in dentistry for over 150 years and is known for its longevity and resistance to wear, making it ideal for molars that endure heavy chewing forces.

Why Were Amalgam Fillings So Popular?

1. Durability – They can last 10-15 years or more.

2. Strength – Amalgam withstands high pressure, making it effective for back teeth.

3. Cost-Effectiveness – Compared to newer white fillings, amalgam is usually more affordable.

4. Easy to Apply – The material hardens quickly, making it a practical choice for dentists.

Despite these benefits, concerns about the mercury content in amalgam fillings have led to a shift toward alternative materials.

Why Are People Replacing Amalgam Fillings?

Over the past two decades, an increasing number of patients have been choosing to remove their amalgam fillings and replace them with composite (white) fillings. Here’s why:

1. Concerns About Mercury Exposure

The biggest concern surrounding amalgam fillings is their mercury content. Mercury is a toxic metal, and although amalgam fillings are generally safe, some studies suggest that small amounts of mercury vapor can be released over time, particularly when chewing or grinding teeth.

People worried about potential health effects, especially those with mercury sensitivities, autoimmune conditions, or neurological concerns, often opt to have their fillings removed as a precaution.

2. Improved Aesthetic Appeal

Unlike silver fillings, composite fillings match the natural color of teeth, making them virtually invisible. Many patients, especially those with visible fillings in their front teeth, prefer the more natural appearance of white fillings.

3. Less Tooth Removal

Amalgam fillings require the dentist to remove more healthy tooth structure to secure the filling properly. In contrast, composite fillings bond directly to the tooth, allowing for a more conservative approach that preserves more of the natural tooth.

4. Environmental Considerations

Mercury is a known environmental pollutant, and many countries have started phasing out amalgam use due to environmental concerns. In fact, the European Union and several other regions have restricted amalgam use in children, pregnant women, and individuals with certain health conditions.

5. Advancements in Composite Materials

Early composite fillings were less durable than amalgam, but advancements in dental technology have improved their longevity. Modern white fillings now last as long as amalgam fillings, making them a viable and attractive alternative.

Safe Amalgam Removal Under a Rubber Dam

At Gateway Dental Practice in Burgess Hill, we offer amalgam removal under a rubber dam to ensure a safe and controlled procedure that minimizes mercury exposure for both the patient and dental team.

What is a Rubber Dam?

A rubber dam is a thin, flexible sheet placed over the teeth to isolate the treatment area. This creates a barrier that prevents amalgam particles, mercury vapor, and water spray from being swallowed or inhaled during the removal process.

Why Do We Use a Rubber Dam for Amalgam Removal?

1. Prevents Ingestion of Amalgam Debris – The dam acts as a shield, ensuring that broken filling pieces do not enter the mouth.

2. Reduces Mercury Exposure – Mercury vapor and fine particles are contained and removed efficiently with high-volume suction.

3. Enhances Patient Comfort – It keeps the tongue and cheeks away from the work area, making the procedure smoother.

4. Creates a Dry Environment – This helps with bonding when replacing the filling with a new composite (white) filling.

Our team follows strict safety protocols, including high-speed suction, external oxygen supply (when needed), and air filtration, to ensure a safe and effective amalgam removal process.

Should You Remove Your Amalgam Fillings?

If you experience discomfort, have a damaged filling, or simply want to switch to a more aesthetic option, replacing them with composite fillings may be worth considering.

Conclusion

Amalgam fillings have served millions of people well, but concerns over mercury exposure, aesthetics, and advancements in dental technology have led many to seek alternatives. Whether or not to remove amalgam fillings is a personal choice, and it’s important to discuss the risks and benefits with a qualified dentist.

If you’re considering replacing your old silver fillings, consult with a professional to determine the best approach for your dental health and overall well-being.