Root Fillings

All About

Root Fillings

A root filling is used to treat infection or inflammation inside a tooth. The aim is to remove the infection, clean and seal the inside of the tooth, and help save a tooth that might otherwise need to be taken out.

Root canal treatment is usually carried out with local anaesthetic, so the tooth and surrounding area are numb during the procedure. Treatment may take one or more appointments depending on the tooth, the infection and the complexity of the canals.

When might I need a root filling?

Your dentist may recommend a root filling if the nerve or soft tissue inside the tooth has become infected or damaged. This can happen because of deep decay, a cracked or broken tooth, a deep filling, leakage under an old filling or crown, injury to the tooth, or a dental abscess.

What happens during treatment?

• The tooth is numbed with local anaesthetic.
• A small opening is made in the tooth.
• The infected or damaged tissue inside the root canals is removed.
• The canals are cleaned, shaped and disinfected.
• The tooth is filled and sealed, sometimes with a temporary filling between visits.
• A permanent filling or crown may be recommended afterwards to protect the tooth.

Top 10 FAQs about root fillings

1. Is a root filling the same as root canal treatment?

Yes. A root filling is commonly used to describe root canal treatment, where the inside of the tooth is cleaned, disinfected, filled and sealed.

2. Why do I need a root filling?

You may need one if the inside of the tooth has become infected, inflamed or damaged. Without treatment, the infection may continue and the tooth may need to be removed.

3. Will the treatment be uncomfortable?

Root canal treatment is usually carried out under local anaesthetic. You may feel pressure or vibration, but the area should be numb. If you feel discomfort during treatment, tell your dentist so they can help.

4. How many appointments will I need?

Some root fillings can be completed in one appointment, but many need two or more visits. Back teeth, curved canals, infection or previous root canal treatment can make treatment more complex.

5. How long does an appointment take?

Appointments can vary, but they may last around 1 to 2 hours depending on the tooth and the work needed.

6. Will I need a crown afterwards?

You may need a crown, especially on a back tooth or a tooth that has been badly broken down. A crown can help protect the tooth from cracking or fracturing after treatment.

7. What should I expect after treatment?

The tooth or gum may feel tender for a few days, and this usually settles. You may be advised to take suitable pain relief such as paracetamol or ibuprofen, if you can take them safely.

8. Can I eat normally afterwards?

Avoid chewing hard foods on the treated tooth until your dentist says it is safe, especially if you have a temporary filling. Wait until the numbness has worn off before eating or drinking hot drinks.

9. How successful are root fillings?

Root canal treatment is a common treatment and is often successful, but no dental treatment can be guaranteed. Success depends on the tooth, the infection, the final restoration and how well the tooth is cared for afterwards.

10. What are the alternatives?

The main alternative is usually removing the tooth. If a tooth is removed, you may wish to discuss replacement options such as a denture, bridge or implant with your dentist.

Aftercare tips

• Keep the area clean by brushing carefully around the tooth.
• Attend all follow-up appointments.
• Contact the practice if swelling, severe pain, fever, or a lost temporary filling occurs.
• Avoid biting hard foods on the tooth until the final filling or crown is complete.
• Continue regular dental check-ups to help protect the tooth and your wider oral health.