Be careful of those metal fillings in your teeth.

Dental fillings have evolved significantly over the years, from early materials like amalgam to the more modern and more commonly used composite resin and glass ionomer cements, otherwise known as the tooth-coloured fillings. Amalgam fillings, a blend of metals including silver, mercury, and tin, were once the material of choice due to their durability and cost-effectiveness. However, their popularity has waned in recent years as more advanced materials have become available. So, what makes amalgam fillings a concern in today’s modern dental landscape?

Amalgam fillings, while once a standard in dental care, have several drawbacks. Unlike modern materials, amalgam fillings do not bond to the tooth structure, essentially sitting in a cavity without reinforcing or holding the tooth together. This can leave the tooth more vulnerable over time. Additionally, amalgam fillings are dark-coloured and can stain teeth, detracting from the overall appearance of your smile. 

Another significant issue with amalgam fillings is their strength. While durable, this strength can lead to problems; amalgam fillings are known for causing cracks in teeth due to thermal expansion and contraction. When these cracks worsen, they can result in complete fractures of the tooth. In such cases, restorative options like crowns may be needed to protect the remaining tooth structure. It is said that amalgam fillings are so strong and so lasting, that they last even longer than the teeth holding them in place – so the filling survives but unfortunately the tooth does not. 

It doesn’t take much to crack a tooth with a metal filling.

Additionally, these cracks can lead to tooth decay. While these cracks are microscopic to our eyes, they are a massive space for decay-causing bacteria to thrive and damage your teeth.

This was from one of my patients. Look at the amount of tooth decay after the crack was uncovered!

To maintain optimal oral health, it is important to have amalgam fillings regularly checked by your dentist. If needed, consider replacing them with tooth-coloured adhesive fillings that blend seamlessly with your natural teeth. For teeth that have been significantly compromised by old amalgam fillings, an onlay or crown may be necessary to provide additional protection and restore function.

Strive to protect your teeth and preserve your smile for as long as possible. Schedule a dental check-up today to evaluate your fillings and explore modern, aesthetic options for maintaining your oral health.