Mercury amalgam replacement Edmonton

Scientific studies have raised concerns about the potential risks associated with mercury amalgam fillings. While no conclusive evidence exists linking dental amalgam to general illness, it is important to consider certain aspects related to mercury amalgam.

Release of Mercury Vapour

Amalgam fillings have been found to release minute amounts of mercury vapour, particularly during chewing. This mercury can be absorbed by the body, reach various organs, and even cross the placenta. It is worth noting that mercury absorbed from natural sources, such as food, follows a similar pattern.

Impaired Kidney Function and Occupational Exposure

Health Canada recommends exploring alternative options for individuals with impaired kidney function. Although dental amalgam itself is not directly linked to such conditions, there is evidence suggesting that patients with impaired kidney function may be more susceptible to the total body burden of mercury. Similarly, individuals with known occupational exposure to heavy metals or those with higher-than-average mercury exposure due to a seafood-based diet may need to consider alternatives to amalgam fillings.

Galvanic Effect

Health Canada advises against placing new amalgam fillings in contact with existing metal devices in the mouth, such as braces. This precaution is based on the galvanic effect, which occurs when different metals are in close proximity, potentially generating electric current. Dentists are aware of this phenomenon and acknowledge that galvanic effect, through the corrosion of dental materials, might increase the release of mercury and other elements or compounds. Recent evidence also suggests that galvanic effect may slightly increase the release of mercury vapour from amalgam.

Health Canada Report and Recommendations

Health Canada released a report on mercury exposure and risks associated with dental amalgam on November 27, 1995. The report suggests limiting the number of amalgam restorations to reduce the average daily exposure to mercury from all sources, including food, water, air, and dental amalgam.

Making Informed Decisions

It is advisable to discuss your concerns and specific situation with your dentist to determine if there are any reasons to exercise caution regarding amalgam presence in your case. Dentists aim to inform patients about the conclusions drawn from scientific studies on dental amalgam. If you have strong personal concerns, inquire about alternative restorative materials, such as injectable ceramic fillings, ceramic inlays or onlays, or ceramic crowns, for your replacement fillings.

Safe Mercury Amalgam Removal Procedures

At our practice, we prioritize safe mercury amalgam removal procedures. Here are some examples of the techniques we employ:

1. Adequate Isolation: The teeth requiring mercury amalgam removal are isolated using a rubber dam to minimize the chance of absorbing and ingesting mercury vapour and particles.
2. Cold Water Spray: All removals are performed under a continuous cold water spray to provide sufficient cooling and reduce mercury vapour formation.
3. High Volume Evacuation: A high volume evacuator tip is kept near the tooth at all times (within 1/2 inch) to effectively evacuate the released vapour from the patient's immediate area.
4. Clean Air Source: Patients undergoing amalgam removal are provided with an alternative clean air source and are instructed not to breathe through their mouth during the treatment. Clean oxygen is delivered through a nasal cannula.
5. Air Filtration: Our operatory area is equipped with adequate air filtration systems, including high-volume air filtration and mass-air-evacuator units, to remove mercury vapour and amalgam particles generated during the procedure.
6. Minimizing Exposure: Mercury alloy particles are promptly washed and vacuumed away to reduce exposure. The filling is sectioned and removed in large pieces to further minimize exposure.
7. Additional Dental Techniques: We employ various dental