How Long Do Tooth Fillings Last?

Getting a filling is a simple procedure that supports your long-term dental health. Knowing how long your filling is likely to last — and what affects its lifespan — helps you take better care of it and know when it’s time to have it checked or replaced.

How Long Do Different Types of Fillings Last?

The durability of a filling is largely determined by the material used. For a full breakdown of the types of fillings available, read our guide on what dental fillings are and when you need one.

In summary:

• Composite fillings: up to 12 years
• Amalgam fillings: up to 15 years
• Ceramic and porcelain fillings: 15 years or more
• Gold fillings: 20 years or more

What Affects How Long a Filling Lasts?

Even the best filling material won’t last if it’s subject to excessive wear or poor oral hygiene. Factors that influence how long a filling lasts include:

• Location in the mouth — fillings in back teeth are subject to more bite pressure and may wear faster than those in front teeth
• Size of the filling — larger fillings are more prone to stress and may need replacing sooner.
• Teeth grinding or clenching (bruxism) — this places significant pressure on fillings and can cause them to crack or wear down prematurely.
• Diet — frequently consuming hard, sticky, or sugary foods increases wear and decay risk around the filling
• Oral hygiene — plaque buildup around the edges of a filling can lead to secondary decay, undermining the filling over time

How to Make Your Filling Last

Good daily habits go a long way toward extending the life of a filling.

• Brush twice daily with a fluoride toothpaste.
• Floss once a day, taking care around areas with fillings.
• Avoid chewing ice, hard lollies, or other hard objects.
• Use a mouthguard during sleep if you tend to grind your teeth at night.
• Attend regular dental check-ups so your Bondi Beach dentist can monitor the condition of existing fillings and catch any early signs of wear or secondary decay.

Signs Your Filling May Need Replacing

Fillings don’t last forever, and it’s important to recognise the signs that one may need attention:

• Sensitivity or pain in a tooth that had no previous issues
• A cracked, chipped, or visibly damaged filling
• A rough or sharp edge where the filling sits
• Discomfort when chewing on the affected tooth
• A filling that feels loose or has fallen out

If you notice any of these signs, contact your dentist promptly. A damaged or lost filling leaves the tooth vulnerable to further decay and should be assessed promptly.

Do Old Fillings Need to Be Replaced Even If They Feel Fine?

Not necessarily. Your Bondi Beach dentist will assess the condition of existing fillings at each check-up. Some fillings last well beyond their expected lifespan with no issues.

Others may show early signs of wear or cracking before they cause symptoms. Regular monitoring means problems are caught early, before a failing filling leads to more extensive treatment.

FAQs

How do I know when my filling needs to be replaced?

Your Bondi Beach dentist will check the condition of your fillings at routine appointments using X-rays and examination. Signs to watch for between visits include sensitivity, pain when biting, a rough edge, or a visible crack or chip in the filling.

Can a filling last a lifetime?

It’s unlikely, though some fillings — particularly gold restorations — can last 20 years or more. Fillings typically need to be replaced over time, making regular check-ups important.

Is it painful to have a filling replaced?

No. Replacing a filling is performed under local anaesthesia, just as placing the original filling. You should feel no pain during the procedure.

What happens if I don’t replace a worn filling?

A worn or damaged filling leaves the tooth exposed to bacteria and further decay. What might require a simple filling replacement if caught early could, if left too long, progress to needing a dental crown, root canal treatment, or extraction.

Can I eat normally after getting a filling replaced?

Yes, though your dentist may advise avoiding very hot or cold foods immediately after the procedure while the anaesthetic wears off. Once settled, you can eat normally.

Does replacing an old amalgam filling with composite affect the tooth?

The process involves removing the old filling and placing a new composite filling—a straightforward procedure. Your Bondi Beach dentist will assess the condition of the tooth underneath and advise if any additional treatment is needed before placing the new filling.

Dental Filling in Bondi Beach

Due for a dental check-up? Let us check your fillings at the same time!

Regular check-ups are the best way to stay on top of your fillings and catch any issues before they become bigger problems. Our team at Bondi Dental will examine your existing restorations and advise if anything needs attention. We see patients from Bondi Beach, Bondi Junction, Bronte, Tamarama, and North Bondi.

Call us on (02) 9365 7187 or book an appointment online. You’ll find us at 136 Curlewis St, Bondi Beach.