Here’s Why You Should Replace Your Metal Fillings

If you have old metal fillings, you may have wondered whether it’s time to replace them with something that blends more naturally with your smile. Metal fillings, also called dental amalgam fillings, have been used for generations because they’re durable and effective. However, modern tooth-colored filling materials offer another option that can be appealing for both cosmetic and practical reasons.

There’s also been ongoing discussion about the mercury contained in dental amalgam. So, should everyone with metal fillings have them removed? Not necessarily. Understanding the facts can help you have a more informed conversation with your dentist.

What’s in a Metal Filling?

Dental amalgam is sometimes called a silver filling because of its appearance, but its composition is more complicated. It is made from a combination of metals, including silver, copper, tin, and elemental mercury. In fact, mercury makes up approximately half of dental amalgam by weight.

Amalgam fillings can release small amounts of mercury vapor, particularly during activities such as chewing and tooth brushing. The amount of exposure can vary depending on factors such as the number and age of the fillings.

What Did the 2016 Study Find?

A 2016 study highlighted concerns about the relationship between the number of amalgam fillings a person has and mercury levels in the body. Researchers found that people with more than eight amalgam fillings had substantially higher blood mercury levels than people without amalgam fillings. The findings added to the ongoing discussion about mercury exposure from dental amalgam.

However, it’s important to put those findings into context. Higher mercury levels don’t automatically mean that a person will experience mercury-related illness. The FDA notes that research has not established conclusive evidence that dental amalgam causes harmful health effects in the general population.

Why Consider Tooth-Colored Fillings?

If an existing metal filling needs to be replaced because it is damaged, worn, or associated with decay, your dentist may discuss tooth-colored composite resin as an alternative.

One major advantage is appearance. Composite fillings can be matched to the color of your natural teeth, making them much less noticeable than traditional silver-colored amalgam.

Composite resin can also require less removal of healthy tooth structure during placement in some situations. However, it isn’t automatically the best choice for every tooth. Factors such as the size and location of the restoration, moisture control, and the amount of biting force the tooth experiences all matter.

Should You Have Your Metal Fillings Removed?

This is where it’s important not to make a blanket decision. If your amalgam filling is intact, functioning properly, and there isn’t decay underneath it, the FDA does not recommend removing it simply to prevent disease or health problems.

Removing an intact filling can unnecessarily remove healthy tooth structure and temporarily increase exposure to mercury vapor during the removal process. Instead, your dentist can evaluate the condition of each filling and determine whether replacement makes sense.

Certain groups may also need to take additional precautions around dental amalgam, including pregnant women, nursing mothers, young children, people with certain neurological or kidney conditions, and people with known sensitivities to components of amalgam. These patients should discuss their individual circumstances with their dental and medical providers.

Talk to Your Dentist About Your Options

If you have several older metal fillings, don’t panic and don’t try to have them removed simply because they’re made with amalgam. Instead, ask your dentist to examine them and discuss whether any need to be replaced.

If replacement is recommended, tooth-colored composite fillings can provide a natural-looking alternative while restoring the affected tooth. Your dentist can help you weigh the benefits and limitations of each material based on your individual needs.

The best filling isn’t necessarily the newest one—it’s the one that’s appropriate for your tooth and your overall oral health.

About the Practice

Dr. Schaffeld provides comprehensive dental care with a focus on helping patients maintain healthy, attractive smiles. The practice offers cosmetic dentistry services that can help patients explore options for improving the appearance of their teeth while addressing their individual dental needs. Dr. Schaffeld’s team takes a personalized approach to treatment, discussing available restorative and cosmetic options with patients so they can make informed decisions about their smiles.

Call us at (541) 426-3783 or schedule your appointment online.