A filling is the most common dental treatment. It repairs a tooth damaged by decay or a small fracture and stops the damage from spreading.
Types of fillings
- Composite resin. A tooth-coloured material that bonds to the tooth. It suits front and back teeth and is highly popular for its natural look.
- Glass ionomer. Tooth-coloured and releases some fluoride. It is often used for small cavities near the gum, in children’s teeth and as a temporary restoration.
- Amalgam. A durable silver-coloured metal alloy, used mainly in back teeth where biting forces are high.
- Ceramic or gold inlays. Made in a laboratory for larger cavities and usually need two visits.
Which material is best depends on the size and position of the cavity, your bite, cost and preference. Your dentist can explain the trade-offs.
What happens during a filling?
- The tooth is numbed with local anaesthetic.
- The decayed part is removed with a gentle drill.
- The cavity is cleaned and, for composite, prepared for bonding.
- The filling material is placed, shaped and hardened with a special light.
- Your bite is checked and the filling is polished.
Aftercare
- Wait until the numbness goes before eating, to avoid biting your cheek or tongue.
- Expect mild sensitivity for a few days. A sensitivity toothpaste can help.
- Brush and clean between teeth as normal, and be gentle around the new filling.
- Contact us if your bite feels uneven or the pain increases.
When a filling is not enough
If decay is deep or a large part of the tooth is missing, a filling may not give enough strength, and a crown may be advised. If the nerve is affected, root canal treatment may be needed.
Prevention
Fillings are not permanent, and new decay can form around them. Good brushing, cleaning between teeth and regular check-ups help them last. See how to prevent cavities and our restorative dentistry service.