A medical text in China dating back to about 700 B.C. showed that metal tooth fillings have been around longer than historians ever expected. It wasn’t until the 19th century that compounds like silver, tin, and gold were being more frequently used to keep decay from eating away at teeth. While metal fillings were once considered the latest and greatest that dentistry had to offer when it came to cavity treatments, advances in technology have gained the field an even better, biocompatible solution called composite resin, or tooth-colored fillings. Read on to learn why studies suggest replacing your outdated metal fillings with better, aesthetically pleasing tooth-colored ones.
What are the Downsides of Metal Fillings?
Today, the term used for metal fillings is amalgam, which is a mixture of metals that includes mercury, nickel, silver, and more. It’s not life-threatening if you have an outdated amalgam filling. In fact, the American Dental Association asserts that they’re completely safe for most patients; however, they’re known for being a less efficient, effective, and more invasive alternative than newer tooth-colored fillings. Some additional downsides of this outdated treatment include:
- Discoloration of the treated tooth over time
- Increased sensitivity in the treated tooth
- Risk of mercury vapor being released and inhaled
- Allergic reactions to metals present in amalgam
Due to these risks, most dentists have navigated towards solely offering tooth-colored fillings because they pose virtually no risk of harm.
How are Tooth-Colored Fillings Better Than Metal Ones?
Tooth-colored fillings are made from a biocompatible material called composite resin, which is the same substance used in dental bonding. Instead of metal, it’s composed of inorganic filler like silica and powdered glass, along with other materials that can fuse with the natural enamel of the tooth to create a strong seal that bacteria can’t breach. It also doesn’t expand or contract as the temperature changes, decreasing sensitivity. And of course, one of the biggest benefits of tooth-colored fillings is that they’re matched to the color of your enamel, so onlookers won’t be able to point out your damaged tooth whenever you smile, laugh, or talk.
What Does the Research Say?
A study published by the University of Georgia in 2016 found that having multiple amalgam fillings can gradually increase mercury levels in the body, leading to a higher risk of developmental and reproductive complications. The FDA also reports that prolonged exposure to mercury vapor can affect tissues and organs, including the kidney and brain.
Between the research and dentists opting for the absolute safest treatment options for their patients, it’s very rare that people will receive amalgam fillings today. So, if you have outdated metal fillings that have been causing increased sensitivity or tooth discoloration, it’s important to know that there are other options available to you that are better for your health and the appearance of your grin!
About the Author
Dr. Teresa Knotts has over 20 years of experience as a dentist. Her career-long philosophy has always been listening to her patients to better understand their needs, and from there, utilizing modern dental technology to meet them. She places focus on preventive dentistry like checkups and cleanings, fluoride treatments, and tooth-colored fillings, so her patients can enjoy complete and beautiful smiles for a lifetime. For questions or to schedule an appointment, visit Town Center Dental’s website or call 972-530-5200.