Preventive Care
Tooth Fillings
Dental amalgam is a filling material that has been used by dentists for over 150 years. A mixture of metals that typically includes silver, copper and tin, dental amalgam fillings (commonly referred to as “silver fillings”) also contain mercury, which has raised safety concerns among patients from time to time.
In response to those concerns, the U.S. Food and Drug Administration (FDA), American Dental Association (ADA) and other organizations have conducted numerous studies over several decades and have repeatedly found that the small amount of mercury released during placement and removal of amalgam fillings does not cause adverse health effects.
Amalgam fillings remain a safe, cost-effective and durable choice when it comes to the restoration of decayed teeth.
Frequently Asked Questions about Amalgam Fillings:
Why is amalgam still used to fill teeth when composite materials are available?
While composite (or “tooth colored”) fillings are more durable than ever thanks to advancements in technology, there are still many cases where amalgam fillings perform better (and longer). This is often the case with teeth that are naturally subjected to extensive chewing force, such as molars. Mercury is an important part of the amalgam mixture as it contains unique elements that allow it to be manipulated with ease during placement and then harden quickly after. In addition to the benefits of longevity, amalgam fillings are also more affordable than composites.
What is the ADA’s position regarding the use of silver amalgam fillings?
A thorough summary of evidence ranging from 2004-2010 led the ADA to reaffirm its position that amalgam is a valuable and safe choice for patients.
What concerns are there with mercury and its effects on the body?
Mercury is a naturally occurring metal and one that we are exposed to in small amounts through water, air and food throughout our lives. Excessive exposure to mercury can negatively affect the brain and kidneys – however, it is important to understand that amalgam fillings do not cause dangerous levels of mercury exposure. Numerous scientific studies and thoughtful research have led the FDA to stand behind its position: amalgam fillings are a safe and effective restoration method for patients over 6 years of age.
When is it appropriate to use composite fillings?
Composite fillings are typically made of a resin and glass mixture, tinted to the color of your tooth, and commonly referred to as “white” or “tooth-colored” fillings. They serve an important purpose for teeth that are visible when smiling, providing an aesthetic benefit not afforded by silver fillings. While resin composite fillings undoubtedly look better than amalgam ones, they are generally considered to be less durable, and therefore may not be ideal for teeth that are subject to extreme chewing and biting forces. It is worth noting, however, that composite materials continue to benefit from technological advancements, contributing to enhanced durability. The ADA supports composite materials in small or mid-size fillings on teeth that are exposed to moderate pressure from chewing, and acknowledges that they are a good choice for a more natural-looking filling.
The Bottom Line?
The ADA Council on Scientific Affairs has concluded that both amalgam and composite materials are considered safe and effective for tooth restoration.
If you still have concerns about amalgam fillings, please don’t hesitate to call our office! It is important to us that you fully understand all available options when it comes to your oral health.
Experience Care that Puts You First
Why is Preventive Dentistry Important?
Preventive dentistry’s value lies in early detection and intervention. By identifying issues early, treatments can be simpler, less invasive, and more cost-effective. Moreover, preventive measures reduce the risk of losing teeth, ensuring the durability of natural teeth.
Reach Out to Us!
Ensuring good oral health is a continuous commitment, and preventive measures are a central component. Saint Louis Dental Studio in Saint Louis, MO, provides a comprehensive range of dental preventive care services to cater to individual needs. Contact us today to schedule your appointment and take proactive steps toward optimal oral health.
faqs
Q: What is the difference between white and silver fillings?
A: White (composite) fillings match your tooth color, bond directly to the tooth, and preserve more of the natural structure. Silver (amalgam) fillings consist of a metal alloy—mainly silver, tin, copper, and mercury—and are highly durable and cost-effective.
Q: Are white (composite) fillings durable?
A: Yes. Composite fillings can endure normal dental use for many years. However, they may not last as long as amalgam in high‑stress areas.
Q: How long do silver (amalgam) and composite fillings typically last?
A: Amalgam fillings often last 10 to 15 years or longer. Composite resin fillings tend to last around 7 to 10 years, though this varies with location and care.
Q: Do composite fillings contain mercury?
A: No. Composite fillings are made from resin and glass materials and contain no mercury. Amalgam fillings do contain mercury, but major dental and health organizations consider them safe for most adults.
Q: Which filling material is more prone to leakage or failure?
A: Composite fillings can shrink over time, which may lead to marginal gaps and recurrent decay under the filling. Amalgam is less prone to this but may expand and lead to tooth fracture if not checked.