Benefits of Replacing Old Amalgam Fillings with Composite By Thomas G. Zarger Jr., D.D.S. on April 05, 2018

Digital illustration of amalgam filling vs. composite fillingRestoring teeth with dental fillings is one of the oldest and time-tested procedures in dentistry. Until the 1990s, teeth were repaired with amalgam fillings, which are comprised of silver, tin, zinc, copper, and mercury. In fact, some dental offices still use amalgam today. 

However, since the advent of composite fillings, many patients are replacing old amalgam fillings with this tooth-colored alternative. Here, our dental team in Knoxville, TN discusses the benefits of this treatment, and explores whether this option is right for you.

Concerns Regarding Amalgam Fillings

Throughout the years, information has surfaced concerning the use of amalgam fillings. Although they are strong and durable, they can also weaken the natural tooth structure over time. Here, we discuss some of the most common concerns regarding amalgam fillings.

Amalgam Reacts to Temperature Fluctuations

Because amalgam is made of a metallic mixture, the compound expands when heated and shrinks when cold. While these minute movements may not have a negative impact initially, they can affect the overall tooth structure over time. In some cases, a tooth may even crack as a result.

Amalgam Contains Mercury

For years, there has been significant controversy surrounding the mercury in amalgam fillings. Some experts claim that mercury is poisonous to the body, and can lead to issues with the nervous system, cognition, and other problems. Although there has been no direct evidence to date suggesting that amalgam fillings are detrimental to your health, many individuals have decided to take the safe route and have them removed. 

Amalgam is Visible

Metal fillings do not blend in with your surrounding teeth. In fact, they are quite noticeable. This is one of the most common reasons patients decide to replace old amalgam fillings with composite.

Benefits of Composite Fillings

Composite resin is a high-quality dental material that can be color-matched according to the patient’s needs. These cosmetic fillings have grown exponentially in popularity since their invention. Here are a few of the advantages of composite restorations.

Composite Does Not React to Temperature Changes

In contrast to their amalgam counterparts, composite fillings do not expand or contract with temperature changes. Therefore, your natural tooth structure will remain resilient to breakage and damage.

Composite Does Not Contain Mercury

Resin composite contains no traces of mercury. In fact, these restorations are tissue-friendly and biocompatible. Therefore, those who are worried about the health hazards of mercury need not worry when having composite fillings placed.

Composite is Aesthetically Pleasing

As you can imagine, one of the most significant perks of composite fillings is that they blend in seamlessly with your smile. Composite resin can be meticulously color-matched to your surrounding teeth.

Composite Bonds Directly to the Tooth

When amalgam fillings are placed, they simply plug the void and nothing more. Think of filling a pothole; an amalgam restoration works the same way. In comparison, a composite filling bonds directly to the tooth structure as it fills the cavity. Therefore, the natural tooth and the filling work together as one, preserving your oral health for years to come. 

Contact Us for More Information

If you have been considering replacing your old amalgam fillings with composite restorations, our family dental practice can help. To schedule a consultation, call us at (865) 693-7631 or contact us online anytime.

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Dr. Thomas G. Zarger, Jr., DDS Family Dentistry in Knoxville

Our practice has provided skilled and compassionate dentistry for patients in the Knoxville, TN, community for over 30 years. Dr. Zarger is a member of:

  • American Dental Association
  • Second District Dental Society
  • Tennessee Dental Association
  • American Academy of Cosmetic Dentistry

We strive to make care convenient and affordable to all patients and accept CareCredit financing to help reduce the cost of treatment. Schedule your consultation today online, or by calling (865) 693-7631.

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