What is a dentist filling? A complete guide for patients
If your dentist says you need a filling, you might have a few questions — what exactly does that mean? How is it done? Does it hurt?Put simply, a dentist filling is one of the most common and effective ways to repair a tooth that’s been damaged by decay or wear. It restores the tooth’s structure and function, helping you bite, chew and smile with confidence again.At Winchester Avenue Dental Surgery, we provide modern, natural-looking fillings designed to blend seamlessly with your teeth. This article explains what is a dentist filling, what happens during the procedure, and what options are available if you need one.
What is a dentist filling?
A dentist filling (also known as a dental filling) is a material used to fill a cavity — a small hole or area of decay — in your tooth. The goal is to restore strength, shape and function while preventing further decay.When you hear your dentist mention a filling, it simply means they’ve found a part of the tooth that’s been weakened by bacteria or worn down over time. By cleaning away the decay and sealing the space, a filling protects the inner layers of the tooth from further damage.At our Leicester dental practice, we use durable, tooth-coloured materials that not only repair but also preserve the appearance of your natural smile.So if you’ve ever wondered “what is dentist filling?” — it’s a small, straightforward treatment that makes a big difference in maintaining healthy teeth.
When might you need a filling?
You might not always feel pain when decay starts, which is why regular check-ups are important. A dentist can spot small cavities early — when they’re easiest to treat.Common signs you might need a filling include:- Sensitivity to hot, cold or sweet foods
- A visible dark spot or hole in the tooth
- Rough edges you can feel with your tongue
- Pain when chewing or biting
- Food getting trapped in the same spot
Types of dental fillings
Modern dentistry offers several materials for fillings. Your dentist will recommend the best one based on the tooth’s location, the size of the cavity and your personal preferences.Here’s a comparison of the most common types we use at Winchester Avenue Dental Surgery:How a dentist filling works
Here’s what usually happens during a routine filling appointment:- Assessment and diagnosis Your dentist examines your teeth visually and may take X-rays to confirm the size and location of the cavity.
- Anaesthetic (if needed) For most patients, a local anaesthetic ensures you don’t feel any pain during treatment.
- Cleaning the cavity The decayed part of the tooth is carefully removed, and the area is disinfected to stop bacteria from spreading.
- Placing the filling The filling material is applied in layers and shaped to fit naturally.
- Polishing and checking your bite Finally, your dentist smooths the filling and checks your bite so everything feels comfortable.
| Material | Best for | Key features |
|---|---|---|
| Composite (white filling) | Front and back teeth | Natural colour match, strong and aesthetic. |
| Amalgam (silver filling) | Back teeth | Durable and cost-effective but less aesthetic. |
| Ceramic or porcelain | Visible teeth needing high strength and appearance | Resistant to staining, highly natural look. |
| Glass ionomer | Temporary or small fillings | Releases fluoride to protect nearby teeth. |
Does getting a filling hurt?
Many people worry about pain when they hear the word “filling,” but modern techniques make the experience comfortable and quick.With local anaesthetic and gentle care, most patients report feeling no pain — only slight pressure or vibration during the procedure.If you’re nervous about treatment, our friendly team will take extra time to help you feel at ease. We also offer advice for anxious patients and can plan treatment in stages if needed.Learn more about our approach to gentle care on our general dentistry page.Aftercare: what to expect following a filling
You might feel mild sensitivity for a day or two — especially if the cavity was deep — but this usually settles quickly.Here’s what to do after your appointment:- Avoid very hot or cold foods until numbness wears off.
- Brush and floss as normal (gently around the filled area).
- If discomfort persists after a few days, contact the practice.
Why fillings are so important
Cavities don’t heal on their own — once tooth structure is lost, it needs to be repaired.If untreated, decay can spread deeper, leading to infection, pain or even the need for more complex treatment such as a crown or root canal. A simple filling done early can save you time, money and discomfort later.So when you think about what is a dentist filling, it’s really a way of preserving your natural tooth before damage worsens.At Winchester Avenue Dental Surgery, our goal is to keep your natural teeth healthy for life — using conservative, evidence-based methods that protect rather than replace.Why patients trust Winchester Avenue Dental Surgery
- Our dentists have years of experience in restorative and preventive care, providing hundreds of successful fillings each year.
- We use modern materials and digital tools for precise diagnosis and treatment planning.
- All our guidance aligns with the latest research and NHS dental care standards.
- Every step of your care is clearly explained — from the reason for the filling to the expected outcome and costs.
Preventing future fillings
The best filling is the one you never need. To reduce your risk of decay:- Brush twice daily with fluoride toothpaste.
- Clean between teeth every day.
- Reduce sugary snacks and drinks.
- Visit your dentist regularly for check-ups.
- Ask your hygienist for tailored cleaning advice.
Final thoughts
Understanding what is a dentist filling helps take the worry out of treatment. It’s a simple, effective way to restore and protect your teeth — and with today’s advanced materials, fillings are more comfortable and natural-looking than ever.If you’re experiencing sensitivity, pain, or think you might need a filling, book an appointment with our friendly team at Winchester Avenue Dental Surgery.We’ll explain everything clearly, keep you comfortable throughout, and help you maintain a healthy smile for years to come.You can also explore our general dentistry services or view our prices to plan your next visit.Frequently asked questions - dentist fillings
What is a dentist filling made of?
Fillings can be made from composite resin, amalgam, porcelain, or glass ionomer. Your dentist will explain the pros and cons of each option based on your needs.
How long do fillings last?
Composite fillings typically last 5–10 years, while amalgam can last longer. Regular dental check-ups ensure early detection if replacement is needed.
Can I eat after a filling?
Yes, though it’s best to wait until the numbness wears off. Avoid very sticky or hard foods for a few hours.
What happens if I don’t get a filling?
Decay will continue to progress, eventually causing pain, infection, or the need for more extensive treatment. Early intervention prevents that.
Are white fillings better than silver ones?
White (composite) fillings are preferred for appearance and versatility. They bond to the tooth and can be colour-matched precisely for a natural finish.