This article explains what those old fillings are made of, why removing them calls for extra precautions, what a safe removal setup typically includes, and how to decide whether removal is right for you.

What Are Old Silver Fillings Made Of?

Most older silver colored fillings are dental amalgam, a blend of metals that has been used in dentistry for more than a century. Amalgam is typically about half elemental mercury by weight, combined with a powdered alloy of silver, tin, and copper. The mercury binds the other metals into a durable material that hardens in the tooth.

Amalgam is strong and inexpensive, which is why so many adults still have it in their mouths today. However, the mercury in amalgam does not stay perfectly locked in place forever. Small amounts of mercury vapor can be released over time, and the amount increases when a filling is disturbed by grinding, polishing, or drilling.

Why Removing Old Fillings Calls for Extra Precautions

Drilling out an amalgam filling is the moment when mercury vapor and fine metal particles are most likely to be released. Without proper controls, a patient could inhale vapor or swallow small fragments, and the dental team can be exposed to the same fumes in the air around the chair.

Dr. Gandhi explains that the protective setup is there to keep patients from inhaling any of that gas or swallowing any of it. He also points out that it is about staff safety and his own safety, because removing old fillings is something his office does constantly. Repeated, unprotected exposure over a career is a real concern for dental professionals, which is why biological dentists take workplace protection seriously.

What a Safe Amalgam Removal Setup Typically Includes

At Tooth & Body, old fillings are removed using the SMART protocol (Safe Mercury Amalgam Removal Technique), a set of safety recommendations developed by the International Academy of Oral Medicine and Toxicology. While each office adapts the details, a SMART style setup generally includes:

• A dental dam: a thin barrier placed around the tooth to isolate it from the rest of the mouth and throat, helping prevent particles from being swallowed.
• High volume suction near the tooth: to capture vapor, water spray, and debris right at the source.
• An external air or oxygen supply: delivered through a nasal mask so the patient is not breathing the air directly above the work area.
• Protective coverings: drapes and eye protection for the patient to limit contact with particles.
• Water spray and sectioning: the filling is cut into chunks and lifted out rather than ground down, which reduces heat and vapor.
• Protective gear for the team: properly fitted respirators and barriers for the dentist and assistants.
• Room air filtration: filtration systems that help clear any vapor that escapes the immediate work area.

Together, these layers are what make the setup look like an entire apparatus. Each one addresses a different way exposure could happen: breathing, swallowing, or skin and eye contact.

Metal Toxicity: Why It Matters to a Biological Dentist

Biological dentistry looks at how the materials in your mouth may interact with the rest of your body. Mercury is a known toxic metal, and research continues to examine how long term, low level exposure may affect health in different people. Sensitivity also varies from person to person, which is part of why a careful, individualized approach makes sense.

Dr. Gandhi emphasizes that regardless of which specific metals are in a filling, the underlying issue is the same: minimizing unnecessary metal exposure. That is why many patients who have old amalgam removed choose metal free replacements, and why some also explore options such as ceramic implants instead of titanium when replacing missing teeth.

Should You Have Your Old Fillings Removed?

Not everyone with amalgam fillings needs to have them replaced right away. The U.S. Food and Drug Administration has said that people with intact amalgam fillings in good condition generally do not need to remove them unless there is a medical reason, and it has recommended that certain higher risk groups avoid getting new amalgam fillings when appropriate. Removing a sound filling also means removing some healthy tooth structure, so the decision should be made thoughtfully.

Common reasons patients consider removal include fillings that are cracked, worn, or leaking, new decay under an old filling, a known sensitivity to metals, or a personal goal of reducing metal exposure as part of a broader health plan. A biological dentist can evaluate your fillings and the surrounding teeth and help you weigh the pros and cons. To understand how oral health may connect with the rest of the body, read about dental infections and the oral systemic connection.

What to Expect at Tooth & Body

When you visit Tooth & Body in North Massapequa, Dr. Gandhi starts with a conversation about your health history and goals, followed by an exam of your teeth and existing restorations. If removal makes sense, the procedure is planned around the SMART protocol, and the replacement material is chosen with biocompatibility in mind.

If you live outside New York, you can start with a nationwide virtual consultation. Learn more about what to expect at a biological dentistry virtual consult before you book.

Schedule a Consultation With Dr. Gandhi

If you have old silver fillings and want to understand your options, Dr. Jigar Gandhi can help you make an informed decision. Contact Tooth & Body to book a visit at our North Massapequa office at 875 N Broadway, or schedule a virtual consultation from anywhere in the country. No weird stuff. Just science.

Frequently Asked Questions