How Long Do Cavity Fillings Last?

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While most people don’t relish the thought of having a cavity filled, they do take comfort in knowing that the damaged tooth has been repaired and the results will last a long time. But exactly how long do cavity fillings last?

Continue reading to learn why fillings don’t last a lifetime, and the reasons why a filling may need to be replaced.

How Long Do Cavity Fillings Last?

How long do cavity fillings last? This is an extremely common question, and the answer depends on a number of factors, including filling size and material used to fill the cavity.

That being said, smaller fillings last longer than larger fillings, and gold fillings are more durable than silver amalgam and composite resins.

As the longest-lasting option, gold fillings typically need to be replaced every 15-to-30 years.

Silver amalgam cavity fillings tend to last 10-to-15 years.

While composite resin fillings look the most like your natural teeth, they usually need to be replaced every five-to-seven years.

Why Do Fillings Need to be Replaced?

There are a number of reasons that a cavity filling may need to be replaced.

If a filling falls out, you’ll likely see the material become detached and/or may experience increased sensitivity. In any event, the filling will need to be replaced.

What’s more, silver amalgam and composite resin cavity fillings are susceptible to cracks and leaks. These issues will likely make your tooth sensitive to hot or cold foods and require a replacement filling.

Finally, all types of fillings, including gold, can wear down over time. Your dentist is likely to spot this problem during a dental exam and recommend replacing the filling.

Learn More

For additional information about cavity fillings and their longevity, please call our office today to schedule a comprehensive consultation with one of our highly skilled and talented dental providers.