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Replacing Amalgam Fillings

replacing amalgam fillings
Published By Dr. Rachel Hall at 13 December, 2023

Are you considering replacing amalgam fillings or even wondering what that is and why would you do it? Do you dislike how those grey metal fillings look in your mouth and want to know what your options are? Then getting your amalgam silver fillings replaced may just be what you are looking for.

Amalgam Filling Replacement Brisbane Holistic Dentist

If you’ve had one or more cavities, then it was most likely filled in with a grey metal amalgam. This grey metal amalgam filling is the silver that can be seen when you throw your head back and enjoy a good laugh or when you open your mouth widely.

Previously, these metal amalgam fillings were the only options available so if you are over the age of 30 and have had a cavity, then your mouth is probably still home to one of the old amalgam fillings.

Now those silver-coloured fillings don’t just look unsightly but they also contain mercury and research indicates that there are some possible health risks associated with these traditional metal amalgam fillings.

Alternatives To Amalgam Mercury Fillings

Rather than offer the metal amalgams, an alternative tooth-coloured composite filling is available which is not only more visually appealing but also functions better than the traditional metal fillings.

Not only is the new tooth-coloured composite fillings used for all patients who have new cavities, but many individuals with the silver fillings also opt to have their old fillings replaced with composite ones.

Here at Evolve Dental, we work holistically so any replacement of amalgam filling is done following strict protocols to minimise any exposure to mercury during the process.

If you have an old metal amalgam filling and are debating whether to replace them, let us help you make the decision in favour of replacement with a few good reasons.

Amalgam fillings contain mercury

Unfortunately, about 50% of an amalgam filling is made up of mercury, which can potentially be a health risk for some patients.

Some patients would feel safer simply replacing their metal amalgams altogether.

Should I get my amalgam fillings replaced?

1. Silver fillings have a limited lifespan

When the traditional silver fillings are inserted, they are packed into an area of your tooth. Since there isn’t any sort of permanent bonding between the filling and the tooth, the silver fillings will, over time, begin to break down.

As the filling wears down, it exposes new areas on the tooth which can eventually become home to harmful decay-causing bacteria. If the filling wears out and the decaying tooth is not detected until the problem worsens, you may require a crown to be placed on your tooth, rather than just replacing the filling.

Your amalgam filling is only expected to last 10 years, so it’s important to have your fillings checked at your routine dental exams to ensure they are still intact. Alternatively, composite fillings are bonded to your teeth, rather than packed in so they are expected to last longer without the fear of tooth decay resulting from broken down fillings.

2. Temperature can change amalgam fillings

Expansion and contraction of metals due to an increase or decrease in temperature is normal. However, it can be problematic when the metal in question is found in your mouth, and even more problematic when it is used to fill in a tooth after a cavity.

An amalgam filling is comprised of about 50% mercury, which is a metal that is used in thermometers and adjusts to the temperature of its surroundings. For example, your amalgam filling will expand when you drink a hot beverage which can cause your tooth to strain and eventually crack or fracture.

The opposite can happen when you eat or drink something cold. Cold beverages or foods can cause your amalgam filling to contract and this can create gaps between the tooth and the filling.

Your teeth, although strong, can only handle these contractions and expansions to a certain extent and if they continue over a long period of time, your teeth will weaken.

What type of filling should I get?

1. Composite fillings blend in with your teeth

For much the same reason that individuals opt to get tooth-coloured or Invisalign braces, composite fillings are tooth-coloured and can blend in easily with the rest of your teeth.

When you smile or open your mouth wide to let out a good laugh, the silver amalgam fillings are clearly visible in your mouth, whereas the composite fillings are virtually invisible.

If you’ve had many cavities, each filled in using an amalgam filling, you may be a little shy to let people see them; in this case, composite fillings may be just the solution for you.

2. Composite fillings strengthen your tooth

Composite fillings are designed to fill in the cavity and in order to do this, they bond directly to the tooth. The tooth along with its composite filling becomes one functional unit.

Amalgam fillings are not attached or bonded to the tooth and can become worn down over time. Due to their different characteristics and abilities, amalgam fillings do not form a single unit with the tooth which can be detrimental to the tooth under certain situations.

When a force is applied to a tooth with a filling, the amalgam portion of the tooth remains solid and unbreakable, whereas the tooth gives in to the force. When the force is unevenly distributed between the tooth and the amalgam filling portion, it can cause the tooth to become damaged, cracked, or fractured under the pressure.

Composite fillings can be used to help avoid this risk and allow for even distribution of force among the tooth and its respective filling.

Replacing Amalgam Mercury Fillings

Your health is precious, and so are your teeth.

Mercury-containing dental amalgam fillings were, at one point, the only option available to serve as fillings for teeth with cavities. This has changed, and new composite fillings have replaced the old.

Although research is ongoing, mercury vapour released from amalgam fillings can be harmful to your health, especially over an extended period of time.

If you want peace of mind that your overall health and the health and structure of your teeth will remain intact, then replacing your amalgam fillings with composite ones, is the choice for you.

Whether you choose to undergo replacement for aesthetic purposes, to protect your health, or to enjoy greater comfort, replacing your old amalgam fillings with composite ones, is a step towards ensuring all three.

If you want to replace amalgam fillings and enhance your smile Evolve Dental can help you accomplish just that.

Call us today 07 3720 1811


  • Dr. Rachel Hall

    Dr. Rachel Hall

    Rachel is the founder and principal dentist at Evolve Dental Healing with over 30 years experience, practising holistically since 2001. Not your typical dentist, Rachel is a passionate opinion leader, challenging convention to empower people to make better dental and health choices, helping thousands to have healthy natural smiles. A respected writer and presenter on holistic dentistry, health and wellness it is Rachel’s mission to revolutionise the way people look at their dental health.

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