Amalgam Removal in Calgary: Why More Patients Are Choosing Mercury-Free Fillings

If you have silver-coloured fillings that were placed years or even decades ago, there's a good chance they may be dental amalgam.

Amalgam has a long history in dentistry and has been used to restore millions of teeth. Today, however, patients have access to additional restorative materials, including tooth-coloured composite resin. As a result, many people visiting their dentist are asking whether an older amalgam filling should be replaced and whether a mercury-free filling is a better option when they need a new restoration.

For some patients, appearance is the main consideration. A tooth-coloured filling can blend much more naturally with the surrounding tooth than a silver restoration.

For others, the question arises because an older filling is cracked, worn, loose or has decay developing around it. When a restoration genuinely needs replacement, patients may prefer to restore the tooth using a modern mercury-free material rather than placing another amalgam filling.

However, there's an important distinction to make from the beginning:

Having an amalgam filling does not automatically mean it needs to be removed.

Health Canada states that existing mercury-containing dental fillings generally do not need to be replaced simply because they contain mercury. The Canadian Dental Association similarly recognizes dental amalgam as an effective restorative material. Removal should therefore be based on your individual dental condition and a discussion with your dentist rather than fear or misinformation.

So, when might amalgam removal make sense? What are mercury-free fillings? And what should you expect if an old silver filling needs to be replaced?

Let's take a closer look.
 

What Are Dental Amalgam Fillings?

Dental amalgam is a restorative material that has traditionally been used to repair teeth affected by cavities and other forms of damage.

You may know amalgam fillings by their more familiar name: silver fillings.

Despite that name, they aren't made exclusively from silver. Dental amalgam is an alloy containing several metals, including elemental mercury combined with metals such as silver, copper and tin.

Amalgam became widely used because it offered several useful characteristics. It was strong, relatively durable and could withstand significant chewing forces, making it particularly useful for restoring back teeth.

The Canadian Dental Association's position on dental amalgam recognizes amalgam as an effective and durable restorative material for a range of clinical situations.

However, dentistry has evolved considerably.

Today, patients have access to alternative restorative materials, and many prefer tooth-coloured options such as composite resin.
 

Why Are They Called Mercury-Free Fillings?

Composite resin fillings don't contain the mercury used in traditional dental amalgam.

They are commonly referred to as mercury-free fillings, white fillings, composite fillings, or tooth-coloured fillings.

Composite resin is designed to bond to the tooth and can be selected in a shade that closely matches your natural enamel.

This gives it one very obvious advantage: aesthetics.

Rather than seeing a dark or silver area when you laugh or open your mouth, a well-matched composite restoration can be considerably less noticeable.

But appearance isn't the only reason patients may choose composite fillings.
 

Why Are More Patients Interested in Amalgam Removal?

There isn't one universal reason.

Some patients are concerned about the appearance of older silver restorations. Others are researching the materials used in their dental work. In many cases, a dentist identifies that an existing filling is beginning to fail and needs to be replaced regardless of the material.

At Alpha Dental Care, fillings and amalgam removal are part of the clinic's restorative dental services in Calgary, with composite resin used as the alternative restorative material.

Some of the most common reasons a patient might discuss replacing an amalgam filling include:

• The existing filling is cracked or damaged
• Decay has developed around or underneath the restoration
• The filling has become loose
• The surrounding tooth has fractured
• The restoration no longer adequately seals the tooth
• The filling requires replacement for another clinical reason
• The patient would prefer a tooth-coloured restoration when replacement is appropriate

The decision should ultimately be based on the health and condition of the tooth.
 

Does Mercury in Amalgam Mean Your Fillings Are Dangerous?

This is where online information about amalgam can become confusing.

Dental amalgam does contain mercury, but that fact alone doesn't mean everyone with amalgam fillings should have them removed.

According to Health Canada's position on dental amalgam, amalgam contributes detectable mercury exposure, but available evidence does not indicate that dental amalgam causes illness in the general population.

The Canadian Dental Association also states that current scientific evidence supports dental amalgam as an effective and safe restorative filling material.

This is an important point because patients may encounter websites or social media posts claiming that everyone should immediately have their amalgam fillings removed to "detox" their body or prevent disease.

Current evidence does not support that blanket recommendation.

In fact, unnecessarily removing a healthy restoration has disadvantages of its own because the procedure can involve removing additional tooth structure and temporarily increase exposure to mercury vapour during the removal process.

If you're concerned about an amalgam restoration, the appropriate first step is therefore a dental examination—not automatically scheduling its removal.
 

When Should an Amalgam Filling Be Replaced?

Dental restorations don't necessarily last forever.

Regardless of whether a filling is made from amalgam or composite resin, it needs to be monitored during routine dental examinations.

Over time, restorations can become worn, cracked, chipped or loose. Decay can also develop around the edges of a filling.

Your dentist may recommend replacement when there is evidence that the restoration or surrounding tooth is compromised.

Cracks in the Filling or Tooth

Teeth experience significant forces every day.

Years of chewing, grinding and temperature changes can eventually contribute to wear or damage involving either the restoration or the remaining tooth structure.

A crack should be assessed because it may allow bacteria to enter areas that are difficult to keep clean.

Decay Around the Filling

Having a filling doesn't make a tooth immune to future cavities.

New decay can develop around a restoration, particularly if the seal between the filling and tooth has deteriorated.

When this happens, the existing filling may need to be removed so the decay can be treated and the tooth restored again.

A Loose or Broken Filling

If part of a filling breaks away or the restoration becomes loose, the tooth is no longer adequately protected.

You may notice:

• A rough edge
• A piece of filling missing
• Food getting caught around the tooth
• New sensitivity
• Pain when biting
• A visible change in the restoration

A damaged filling should be examined rather than ignored.

Changes Identified During a Dental Examination

Not every failing filling produces symptoms.

Your dentist may notice signs of deterioration during a routine examination before you experience discomfort.

This is one reason regular dental exams and professional cleanings remain important even when your teeth feel perfectly normal.
 

Why Choose Composite Resin When a Filling Needs Replacement?

If an old amalgam filling genuinely needs replacement, many patients choose composite resin.

There are several reasons.
 

1. Composite Fillings Are Tooth-Coloured

This is perhaps the most noticeable advantage.

Composite resin is available in shades designed to closely resemble natural teeth.

This can be particularly beneficial for fillings in areas that are visible when you speak, smile or laugh.

Even restorations on back teeth may become visible when your mouth is open widely, so some patients prefer the more discreet appearance of composite throughout their smile.

For patients interested in maintaining a natural-looking smile, tooth-coloured fillings can complement other cosmetic dentistry treatments while still serving an important restorative purpose.
 

2. Composite Resin Bonds to Tooth Structure

Composite materials use adhesive dentistry to bond to the prepared tooth.

This differs from traditional amalgam restorations, which rely more heavily on the shape of the prepared cavity for mechanical retention.

The exact amount of tooth structure that needs to be removed depends on the condition of the tooth, the existing restoration and the clinical situation.

Preserving healthy natural tooth structure whenever possible is an important principle of modern restorative dentistry.
 

3. Composite Is Mercury-Free

For patients who prefer not to have mercury-containing restorative material placed in their mouth, composite resin provides an alternative.

Health Canada advises that patients should receive enough information to make an informed choice about filling materials, including the risks, benefits and appropriate alternatives.

That doesn't mean amalgam should automatically be considered unsafe.

Rather, it means patients have choices.

If you require a new filling or an existing restoration needs replacement, you can discuss available materials with your dentist and make a decision based on your dental needs and preferences.
 

4. Composite Can Be Used for Many Different Restorations

Composite resin is versatile.

Dentists can use it to restore many cavities, repair certain chipped teeth and replace appropriate older restorations.

However, no single dental material is perfect for every situation.

The size and location of the restoration, biting forces, remaining tooth structure, moisture control and your overall oral health can all influence which restorative approach is most appropriate.

A very large or severely damaged tooth, for example, may require something more substantial than a filling.

In those circumstances, your dentist may discuss another restorative treatment, such as a dental crown, to provide the tooth with greater coverage and protection.
 

Should Healthy Amalgam Fillings Be Removed Just Because They Contain Mercury?

Generally, not routinely.

This is one of the most important points for patients researching amalgam removal online.

Health Canada states that replacing existing mercury fillings is generally not recommended solely because of their mercury content. Its position specifically notes that evidence does not warrant wholesale removal of amalgam restorations in people without indications for doing so.

The U.S. Food and Drug Administration provides similar advice. It states that removing an intact amalgam filling when there is no decay underneath can unnecessarily remove healthy tooth structure and temporarily increase mercury-vapour exposure during removal.

You can review the FDA's patient information about dental amalgam fillings for additional information.

In practical terms, this means:

Old doesn't automatically mean bad.

If you've had a silver filling for 20 years and it's still functioning properly, your dentist may recommend continuing to monitor it rather than replacing it unnecessarily.

If that same filling has developed a fracture, leakage, recurrent decay or another problem, replacement may be appropriate.

The decision is based on the tooth—not simply the colour of the filling.
 

What About Patients Who Are Particularly Concerned About Mercury?

Some individuals may have specific reasons to discuss dental amalgam with their dentist or physician.

Health Canada advises particular caution regarding amalgam in certain circumstances, including pregnancy, impaired kidney function and confirmed hypersensitivity to mercury.

The FDA also identifies certain groups who may be at greater risk from mercury exposure and recommends considering non-mercury alternatives when possible and appropriate.

If you have a medical condition, allergy, pregnancy or other concern that you believe could affect your dental treatment, tell your dentist before having any restorative procedure.

Your dental and medical history should always be considered when developing a treatment plan.
 

What Happens During Amalgam Removal?

If your dentist determines that an existing amalgam restoration should be replaced, the procedure involves carefully removing the old restoration, evaluating the underlying tooth and restoring it appropriately.

The exact process varies according to the tooth and restoration.

Generally, treatment may involve:

Examining the Tooth

Before removing the filling, your dentist will evaluate the restoration and surrounding tooth.

Dental X-rays may be recommended to look for decay, structural damage or other problems that aren't visible during a clinical examination.

Numbing the Area

Local anaesthetic can be used to keep you comfortable during treatment.

For most patients, replacing a filling is a routine restorative procedure.

If dental anxiety has prevented you from seeking treatment, let the dental team know. Alpha Dental Care also provides sedation dentistry in Calgary for appropriate patients and procedures.

Isolating the Treatment Area

Controlling the treatment environment helps the dentist work precisely and manage debris generated during the procedure.

Health Canada recommends that dentists use appropriate techniques and equipment when placing or removing amalgam to minimize exposure to mercury vapour and appropriately manage amalgam waste.

Removing the Existing Filling

The dentist carefully removes the old restoration while preserving appropriate healthy tooth structure.

Once the filling has been removed, the underlying tooth can be fully evaluated.

Removing Any Decay

If decay is discovered beneath or around the old filling, the affected tooth structure is treated before the new restoration is placed.

This step is critical.

Simply replacing the visible filling without addressing underlying decay wouldn't solve the problem.

Restoring the Tooth

If composite resin is appropriate, the tooth is prepared and the material is applied and bonded.

The dentist then shapes and polishes the restoration and checks your bite to make sure the restored tooth contacts appropriately.
 

Will Amalgam Removal Hurt?

Patients sometimes postpone replacing a damaged filling because they assume treatment will be painful.

Local anaesthesia is used when appropriate to numb the treatment area, and filling replacement is commonly performed as an outpatient dental procedure.

After treatment, some temporary sensitivity can occur, particularly if the original restoration was large or the tooth required substantial work.

If you experience persistent or worsening pain following dental treatment, contact your dentist.

Pain isn't something you should simply tolerate without having it assessed.
 

What If There Is Significant Damage Under an Old Filling?

Sometimes an old filling looks relatively small from the outside, but removing it reveals more extensive decay or structural damage.

In those situations, another filling may not always provide enough protection.

Your dentist may recommend a dental crown if the remaining tooth requires additional coverage.

If decay or infection has reached the dental pulp—the soft tissue inside the tooth—root canal therapy may sometimes be required before the tooth can be restored.

And when a tooth is damaged beyond predictable restoration, extraction may occasionally need to be considered.

This is why an examination is necessary before assuming that replacing an amalgam filling with composite will be a simple one-for-one exchange.

The treatment needs to address the actual condition of the tooth.
 

Can You Replace All Your Silver Fillings at Once?

Technically, multiple restorations can sometimes be treated as part of a larger restorative plan, but that doesn't mean every amalgam filling should automatically be replaced.

A better approach is to evaluate each restoration individually.

Your dentist can determine:

• Which fillings are healthy
• Which require monitoring
• Which show signs of deterioration
• Whether decay is present
• Whether any teeth are cracked
• Which restorations actually require treatment
• What material is appropriate if replacement is necessary

If several fillings need attention, treatment can then be prioritized based on clinical need.

This avoids unnecessary dentistry while ensuring teeth with genuine problems receive treatment.
 

How Long Do Composite Fillings Last?

There isn't a universal lifespan for a dental filling.

Longevity depends on numerous factors, including:

• The size of the restoration
• Where it is located
• How much biting force it receives
• Your oral hygiene
• Your diet
• Whether you grind or clench your teeth
• The condition of the surrounding tooth
• The restorative technique and material

Small restorations may face very different stresses from large fillings covering substantial portions of a molar.

The best way to protect any restoration is to maintain excellent oral hygiene and have it regularly examined by your dentist.
 

How Can You Help Your New Filling Last?

Whether your restoration is new or several years old, daily habits matter.

Brush your teeth thoroughly twice a day using fluoride toothpaste and clean between your teeth daily using floss or another interdental cleaning method recommended by your dental professional.

Regular dental visits also give your dentist an opportunity to monitor restorations for early signs of wear, cracking or recurrent decay.

If you grind or clench your teeth, mention it to your dentist. Bruxism can place substantial force on both natural teeth and restorations.

You should also avoid using your teeth as tools to open packaging, crack nuts or bite other hard objects.

Your teeth are strong—but they aren't indestructible.
 

Signs an Existing Filling Should Be Checked

You don't need to diagnose a failing filling yourself.

However, certain changes should prompt a dental appointment.

Contact your dentist if you notice:

• New tooth sensitivity
• Pain when biting
• Persistent toothache
• A loose filling
• A visible crack
• Part of a filling breaking away
• A sharp or rough edge
• Food repeatedly becoming trapped around a restoration
• A change in how your teeth meet
• Swelling around the tooth

You should also continue routine examinations even without symptoms because not every dental problem causes immediate pain.
 

Mercury-Free Dentistry Is About Providing Patients With Options

The conversation around amalgam and mercury can sometimes become unnecessarily polarized.

It doesn't need to be.

Amalgam has been used successfully in dentistry for generations, and Canadian dental authorities do not recommend removing every sound amalgam filling simply because mercury is one of its components.

At the same time, modern dentistry provides patients with effective mercury-free restorative options.

Composite resin allows dentists to restore many teeth using a material that doesn't contain mercury and can closely match the natural tooth colour.

For someone who needs a new cavity filling, composite may therefore be an attractive choice.

For someone with an old amalgam restoration, the decision is slightly different.

The first question shouldn't be:

"How quickly can I remove all my silver fillings?"

It should be:

"Are my existing fillings and the teeth underneath them healthy?"

That question allows your dentist to recommend treatment based on clinical need rather than fear.
 

Questions to Ask Your Calgary Dentist About Amalgam Removal

If you're considering replacing older silver fillings, your appointment is a good opportunity to ask questions.

You may want to discuss:

• Is my existing amalgam filling still in good condition?
• Is there decay underneath or around it?
• Is the tooth cracked or weakened?
• Does the filling actually need replacement?
• What are my restorative material options?
• Is composite resin appropriate for this particular tooth?
• How much healthy tooth structure will need to be removed?
• Is the remaining tooth strong enough for another filling?
• Would a crown provide better protection?
• How will the amalgam be managed during removal?
• Will I experience sensitivity afterward?
• How should I care for the new restoration?

Your dentist should be able to explain why treatment is—or isn't—recommended.
 

Choosing Amalgam Removal and Mercury-Free Fillings in Calgary

If you have old silver fillings, there's no reason to panic.

Having amalgam restorations doesn't automatically mean there's something wrong with your teeth, and Canadian health authorities do not recommend routine removal of healthy amalgam fillings solely because they contain mercury.

What matters is the condition of each restoration and the tooth it protects.

When an old filling is damaged, failing or associated with decay, replacement may be necessary. At that point, a tooth-coloured composite restoration can provide a mercury-free alternative with the additional advantage of blending naturally with your smile.

Regular dental examinations are the best way to determine whether your older fillings are still doing their job.
 

Have Your Old Fillings Checked at Alpha Dental Care in Calgary

If you have older silver fillings and aren't sure whether they need attention, Alpha Dental Care can evaluate them as part of a comprehensive dental examination.

Alpha Dental Care provides fillings and amalgam removal in Calgary and uses composite resin fillings as an alternative to amalgam. The clinic can assess the condition of your existing restorations, check for decay or damage and discuss whether monitoring, replacement or another restorative treatment is appropriate for your teeth.

The goal isn't to remove dental work unnecessarily. It's to preserve healthy tooth structure and treat problems when they genuinely require attention.

Whether you've noticed sensitivity around an older filling, have a damaged restoration or simply want a dentist to check fillings that have been in place for many years, an examination can give you a clearer understanding of your options.

Concerned about an old silver filling? Book an appointment with Alpha Dental Care in Calgary to have your existing restorations evaluated and discuss whether a mercury-free composite filling is appropriate for you.