How Long Do Dental Fillings Last?
Introduction
If you’ve recently had a cavity filled — or are considering treatment — you may be wondering how long dental fillings last. The lifespan of a filling depends on several factors, including the material used, the size of the filling, and your oral hygiene habits. If you’re considering cavity fillings in Toronto, understanding longevity can help you plan ahead. At Teeth & Beauty Toronto, we use modern materials designed for durability and natural appearance while helping patients protect their restorations long term.
1. Average Lifespan of Dental Fillings
While results vary by patient, here’s a general guideline:
White composite fillings: Typically 7–10 years
Silver amalgam fillings: Often 10–15 years or longer
Learn more about the differences between materials in our guide to white fillings vs silver fillings. Modern composite materials have improved significantly and are now highly durable, especially when placed properly and maintained with good oral care.
2. What Affects How Long a Filling Lasts?
Several factors influence the longevity of your filling:
The size and location of the cavity
Biting and chewing habits
Teeth grinding or clenching
Daily oral hygiene routine
Regular dental exams and attending regular dental cleanings to prevent future decay around existing fillings.
Fillings placed in back molars endure more pressure than those in front teeth. Patients who grind their teeth may experience faster wear over time.
3. Signs a Filling May Need Replacement
Even durable fillings eventually need replacement. Watch for:
Sensitivity around the filled tooth
Pain when chewing
Visible cracks or wear
Darkening around the edges
Food frequently getting trapped
Routine checkups allow dentists to monitor your fillings and address minor issues before they turn into larger problems. If you’re concerned about treatment, read our article on whether dental fillings hurt to understand what to expect.
4. Can Fillings Be Repaired?
In some cases, small defects can be repaired without completely replacing the filling. However, if decay develops underneath or the material fractures significantly, full replacement may be recommended.
Early detection is key — the sooner issues are identified, the simpler the solution.
5. How to Make Your Fillings Last Longer
You can extend the life of your dental fillings by:
Brushing twice daily with fluoride toothpaste
Flossing consistently
Avoiding chewing ice or hard objects
Wearing a night guard if you grind your teeth
Attending routine dental cleanings and exams
Preventative care plays a major role in preserving both natural teeth and restorations, especially before starting treatments like Invisalign clear aligners or cosmetic bonding.
Conclusion
Dental fillings are designed to restore strength and function to teeth affected by decay. With proper care and regular checkups, they can last many years.
If you have an older filling or are experiencing sensitivity, book your dental exam at Teeth & Beauty Toronto today to ensure your smile stays healthy and strong.