How Long Do Dental Fillings Last?
Dental fillings are one of the most common treatments in dentistry, used to repair teeth affected by decay or minor damage. While they are designed to be durable, they don’t last forever. Understanding how long fillings typically last and what factors affect their lifespan can help patients protect their oral health and know when to seek dental advice.
Average Lifespan of Dental Fillings
The longevity of a filling depends on several factors, including the material used, the size of the filling, and a patient’s oral habits. On average, Composite (tooth-coloured) fillings last around 7 to 10 years, and often longer with excellent oral hygiene and regular dental check-ups..
What Affects How Long a Filling Lasts?
Several everyday factors can influence the lifespan of a dental filling, including:
- Grinding or clenching teeth (bruxism)
- Chewing hard foods or ice
- Poor oral hygiene
- Tooth decay developing around the edges of a filling
- The location of the filling (back teeth endure more pressure)
Regular dental examinations allow early detection of wear, cracks, or leakage around fillings before they cause pain or further damage.
Why We Don’t Place Amalgam (Silver) Fillings
In the past, amalgam (silver) restorations were commonly used due to their strength and affordability. Today, many dental practices, no longer place amalgam fillings, as modern tooth coloured materials provide excellent durability without the need for metal. There are certain situations that a silver filling is ideal and your dentist will let you know when and why that is.
Current dentistry focuses on:
- Preserving as much natural tooth structure as possible
- Using materials that bond directly to the tooth
- Providing restorations that blend seamlessly with natural teeth
What If You Already Have Amalgam Fillings?
If you have older amalgam fillings, there’s usually no need to replace them unless there is a problem. Well functioning amalgam fillings can remain strong for many years.
However, we recommend:
- Regular dental check ups to monitor old fillings for cracks, leakage, or surrounding decay
- Watching for symptoms such as pain, sensitivity, or visible cracks
- Replacing amalgam fillings only when clinically necessary, such as when they fail or compromise the tooth
If replacement is needed, modern composite can restore strength while improving appearance.
When Should a Filling Be Replaced?
You may need a filling replaced if:
- It feels loose, sharp or rough
- You experience persistent sensitivity or pain
- There is visible damage or decay around the filling
- Food frequently gets trapped around the tooth
Early replacement can prevent more extensive treatment, such as Crowns or Root Canal Treatment.
Looking After Your Fillings
To help your fillings last as long as possible:
- Brush twice daily with fluoride toothpaste
- Floss or use interdental cleaners daily
- Attend routine dental check-ups and hygiene appointments
- Wear a night guard if you grind your teeth
- Avoid chewing excessively hard foods
Call 03 5275 6565 or book an appointment online today and arrange a comprehensive dental examination to ensure your fillings are in good condition and your oral health is well maintained.
