We do not use amalgam (“mercury”) fillings at Legacy Dentistry. However, it is important to know the risks and benefits of this material, so that you can make an informed decision when seeking dental care.
Dental Amalgam is a commonly used dental filling that has been used for over 150 years. It is a mixture of mercury with at least one other metal. Amalgam has many advantages over other restorative material, such as low cost, strength, durability, and bacteriostatic effects.
Amalgam is used in dentistry for a number of reasons. It is relatively easy to use and manipulate during placement; it remains soft for a short time so it can be packed to fill any irregular volume, and then forms a hard compound. Amalgam possesses greater longevity than other direct restorative materials, such as composite. On average, most amalgam restorations serve for 10 to 12 years, whereas resin-based composites serve for about half that time. However, with recent improvements in composite material science and a better understanding of the technique-sensitivity of placement, it should be noted that this difference is decreasing.
The American Dental Association Council on Scientific Affairs has concluded that both amalgam and composite materials are considered safe and effective for tooth restoration.
Despite the ADA’s continued support of amalgam fillings, and the material’s clear clinical benefits, there are enough environmental and safety concerns that we feel it is important we exclude amalgam fillings as a treatment option in our practice.