What is a filling?

A filling repairs a tooth damaged by decay or a small fracture. Treating decay early can help avoid more involved treatment such as root canal therapy or extraction.
The process
- The tooth is numbed if needed.
- Decay is removed and the cavity is cleaned.
- Your dentist decides whether a filling is suitable or whether a larger restoration is needed.
- The filling material is placed, shaped and polished, and your bite is checked.
Choosing a material
This depends on the position of the tooth, the size of the cavity, your bite and your budget.
- Glass ionomer: releases fluoride; often used for children or small fillings; less durable.
- Composite resin: tooth-coloured and widely used.
- Ceramic or porcelain inlays/onlays: for larger restorations covering several surfaces.
- Gold: very durable and well tolerated, but visible.
Risks
Sensitivity is common for a short time. Deep fillings can occasionally lead to nerve problems needing further treatment. All fillings eventually wear.
Read about what affects filling costs.
Related articles
- How Much Does a Filling Cost?
- Tooth Filling Cost: What Affects the Fee
- Are Dental Fillings Safe? Common Questions Answered
This article is general information only and does not replace advice from your own dentist. Whether a treatment is suitable for you can only be decided after an examination. All dental treatment carries risks, and results vary from person to person.