How long do dental fillings last? An expert guide from our dentist
If you’ve been told you need a filling — or you’ve recently had one placed — you may be wondering a very common question: how long do dental fillings last? The honest answer is that it depends on the material used, how well the tooth is looked after, and whether the bite is balanced.
At Smile Perfections Dental & Cosmetic Clinic, we place a wide range of fillings every week — from small preventive repairs to larger restorative treatments. As a result, we can confidently explain what affects longevity, how to maintain your filling properly, and how to spot the signs that it needs replacing.
This guide also covers how long does a temporary dental filling last, since many patients receive a temporary repair before their final restoration.
Let’s start with the most important question.
How long do dental fillings last?
On average, a well-placed dental filling can last anywhere from 5 to 15 years, depending on the type of material used and how well you maintain your oral health.
Here at Smile Perfections, we use high-quality, tooth-coloured composite materials for most fillings because they blend seamlessly with the natural tooth and provide strong, durable results.
However, there is no single number that applies to everyone. Several factors influence the lifespan of a filling:
- Material used (composite, amalgam, glass ionomer, ceramic)
- Size of the filling
- Location in the mouth
- Your cleaning habits
- Your sugar intake
- Clenching or grinding habits
- Regularity of dental check-ups
Attending routine appointments helps us monitor your restorations and oral health. You can learn more about our preventive approach on our dedicated dental check-up page.
What affects how long dental fillings last?
1. Material type
This is one of the biggest factors.
Composite fillings — the most common material used at Smile Perfections — usually last around 7–10 years, but with excellent care, many last much longer.
Amalgam fillings can sometimes last 10–15 years or more, although they are less commonly used today due to aesthetic preference for tooth-coloured options.
2. Size of the filling
Smaller fillings naturally last longer because they require less structural support and are less exposed to chewing forces. Larger fillings may eventually need upgrading to a crown if too much of the natural tooth structure is lost.
3. Bite pressure and grinding
Night-time grinding or clenching (bruxism) places extra stress on fillings. We often recommend custom nightguards for protection when needed, which you can ask about during your next appointment.
4. Oral hygiene and diet
Daily brushing, interdental cleaning, and maintaining a low-sugar diet all help extend the lifespan of your fillings. Our dental hygienist in Leicester can support you with tailored advice.
5. How regularly you attend check-ups
Routine examinations allow us to spot early cracks, decay around a filling, or wear before it becomes a bigger issue. That’s why we recommend booking regular dental check-ups.
| Filling material | Appearance | Typical lifespan |
|---|---|---|
| Composite (white) | Tooth-coloured, blends naturally | 7–10 years |
| Amalgam (silver) | Silver-coloured | 10–15 years+ |
| Glass ionomer | Tooth-coloured but less aesthetic | 3–5 years |
| Ceramic/inlay/onlay | Highly aesthetic and strong | 10–20 years |
This is a general guide — not a rule. Some fillings fail sooner, while others last much longer depending on how well you care for them.
How long does a temporary dental filling last?
Patients often ask: how long does a temporary dental filling last?
Temporary fillings are used in situations such as:
- After an emergency appointment
- During root canal treatment
- When a tooth needs to settle before placing a permanent filling
- When you’re waiting for a crown or inlay
A temporary filling is not designed to last long-term. It typically lasts 2–8 weeks, depending on the material and bite pressure.
For more detail, you can explore helpful resources like:
- Sensodyne’s guide to temporary tooth fillings
- Healthline’s article on temporary fillings
At Smile Perfections, we advise booking your follow-up appointment promptly to avoid cracks, leaks, or sensitivity.
Why temporary fillings don’t last as long
Temporary materials are soft and porous, allowing bacteria to seep through if left in place too long. They may also crack under chewing pressure. That’s why it’s essential to complete the full treatment plan your dentist has recommended.
If you have a temporary filling and feel sensitivity, a bad taste, or the filling falls out, contact us immediately via our main website:
How do I know if my filling needs replacing?
Even the strongest filling won’t last forever. Here are common signs that yours may need attention:
- Sensitivity when biting or drinking cold liquids
- A rough or sharp edge you can feel with your tongue
- Discolouration or dark lines around the filling
- Food packing between teeth
- A visible crack
- Pain or swelling
- A chipped or missing portion of the filling
If you notice any of these symptoms, book a check-up appointment so we can assess the filling before it worsens.
How to make your dental fillings last longer
Good oral habits can significantly extend the life of your filling. We recommend:
- Brushing twice daily with fluoride toothpaste
- Cleaning between the teeth every day
- Limiting sugary snacks and drinks
- Avoiding chewing ice or very hard foods
- Using a nightguard if you grind your teeth
- Seeing our hygienist in Leicester regularly
Regular hygiene appointments help remove plaque and protect both your natural teeth and restorations.
Expert dental care from Smile Perfections Leicester
At Smile Perfections, our clinicians have years of experience in restorative dentistry, ensuring your fillings are placed with precision and care. We use high-quality materials and modern techniques designed to protect the tooth long-term.
Our approach includes:
- Thorough diagnosis
- Gentle preparation
- High-strength bonding systems
- Careful bite adjustment
- Clear guidance after your appointment
You can find more details about our restorative treatments on our dental fillings page.
Final thoughts
Understanding how long dental fillings last helps you look after them properly and avoid unexpected dental problems. With good hygiene and professional care, your fillings can stay strong and comfortable for many years.
If you’re concerned about a filling, considering treatment, or simply due a check-up, our friendly team is here to help.
Visit us at Smile Perfections Dental & Cosmetic Clinic Leicester
A healthier, more confident smile starts with good information — and the right dental team behind you.
Patients frequently ask
Composite fillings usually last 7–10 years, while amalgam fillings may last 10–15 years or more. Lifespan varies depending on oral hygiene, bite forces, and material used.
A temporary filling generally lasts 2–8 weeks. It should always be replaced with a permanent restoration as soon as possible.
Most fillings are carried out under local anaesthetic and feel comfortable. Afterwards, some mild sensitivity is normal but temporary.
Yes — especially if it is temporary or if decay develops underneath. If your filling comes out, contact us immediately through the Smile Perfections website.
Daily brushing, flossing, reducing sugar intake, and attending regular check-ups and hygiene visits all help prolong the lifespan of your fillings.
