How do you know if you have mercury poisoning from fillings?
Jessica Wood
Updated on January 04, 2026
Your healthcare provider may recommend a urine test (most common), fecal, or blood test for mercury poisoning from fillings. Amalgam fillings and methylmercury (organic mercury), often found in seafood products, are the top sources of mercury that can lead to mercury poisoning.
Amalgam fillings
Dental amalgam is a liquid mercury and metal alloy mixture used in dentistry to fill cavities caused by tooth decay. Low-copper amalgam commonly consists of mercury (50%), silver (~22–32%), tin (~14%), zinc (~8%) and other trace metals.
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Can mercury from dental fillings symptoms?
Disease-based research about mercury in amalgam fillings and human health: The symptoms of mercury poisoning can mimic the symptoms of some neurological diseases, for example multiple sclerosis and Alzheimer's disease. Currently, there is no evidence that dental amalgam causes these diseases.Can you get mercury poisoning from broken fillings?
While it's improbable you can get mercury poisoning from fillings—as the level of mercury exposure from dental fillings isn't a threat to your health—there are other circumstances where individuals may experience mercury poisoning.Can you get mercury poisoning from silver fillings?
In fact, there is no known safe level of mercury exposure. Here in the United States, silver fillings are incredibly commonplace and have been used to restore the teeth of more than 100 million Americans. Yet time and time again, research shows that silver dental fillings expose you to the harmful effects of mercury.How do you detox from mercury fillings?
The safest way to remove mercury amalgam fillings is the SMART Method, which includes:
- A rubber dam to shield your mouth.
- Disposable covering for hair and skin of patient and staff.
- A HEPA filter and high-volume vacuum above patients.
- Chlorella and/or activated charcoal to remove traces of mercury.
Amalgam (metal) fillings: Common symptoms of chronic mercury poisoning
Should I get my mercury fillings removed?
If your metal fillings are worn, cracked, or if there is severe decay beneath the metal filling, then you should definitely get them removed. If your old fillings are fine, but you want to avoid the effects of mercury on your health, then you should get a mercury filling removal.Is mercury poisoning permanent?
When detected early, mercury poisoning can be halted. Neurological effects from mercury toxicity are often permanent. If you suspect sudden mercury poisoning, call the Poison Control Center at 800-222-1222.Can old tooth fillings make you sick?
The ADA also says that the substance that makes up silver fillings, known as dental amalgam, has been used safely for 150 years. But some research has suggested the fillings may cause health problems that range from chronic fatigue-like symptoms to neurological problems, including Alzheimer's disease.How do you tell if your fillings are leaking?
A missing or loose filling can allow hot or cold food or drinks to aggravate the sensitive pulp. If you notice heightened sensitivity to hot or cold drinks or food, this may be a sign that your filling is loose or that you have untreated tooth decay.Can a broken tooth filling make you sick?
Overall Health and Old Amalgam FillingsThe element is highly toxic. In fact, there really isn't a safe level when it comes to mercury exposure. The truth of the matter is your old silver amalgam fillings could be making you sick.
What happens if you swallow a metal tooth filling?
Occasionally the filling or crown may be swallowed. Swallowing the piece of dental filling is not dangerous, as it should pass safely through your body. Obviously, it will be unusable by the time it has passed through so please do not try and retrieve it! More concerning, however is breathing it in, or inhaling it.What happens if you swallow a cavity filling?
Swallowed fillings generally pass harmlessly through your digestive system. Inhaled fillings, however, can cause serious infections and complications in your respiratory system.What year did they stop using mercury fillings?
In 2008, the American Dental Association, (ADA), announced that the use of mercury-silver, or amalgam, dental fillings has been banned in Sweden, Denmark and Norway. There has been much discussion about the health and environmental risks of mercury fillings in the United States as well as Europe for some time.What are the side effects of silver fillings?
The Dangers of Amalgam Fillings
- Heavy metal poisoning symptoms (irritability, lack of concentration, anxiety, muscle pain and tremors)
- Insomnia.
- Headaches.
- Nerve damage.
- Kidney problems.
- Respiratory failure.
- Gastrointestinal problems.
- Long term brain damage.
Are mercury fillings harmful?
The majority of evidence shows exposure to mercury from dental amalgam does not lead to negative health effects in the general population. Exposure to mercury may pose a greater health risk in certain groups of people, who may be more susceptible to potential adverse effects generally associated with mercury.Do all metal fillings have mercury?
Dentists have used amalgams for nearly 200 years. Some people think they are dangerous because of the mercury, but studies do not show that this is true. In recent years, many dentists have been replacing fillings that contain some mercury. But replacing them isn't necessary.How do you know if your filling is infected?
Symptoms
- Severe, persistent, throbbing toothache that can radiate to the jawbone, neck or ear.
- Sensitivity to hot and cold temperatures.
- Sensitivity to the pressure of chewing or biting.
- Fever.
- Swelling in your face or cheek.
- Tender, swollen lymph nodes under your jaw or in your neck.
How do I know if my dentist has a messed up filling?
Possible signs of poor dental fillings
- unshaped or un-smoothed fillings, that may extend beyond the edge of the tooth creating an “overhang”;
- very large fillings, which can indicate that a crown should have instead been used to restore the tooth;