A filling replaces part of a tooth that has been lost because of decay or accidental damage. It rebuilds the tooth so you can bite, chew or just simply smile.
Initially, there may be no or very little discomfort. However, if decay is left untreated, it can spread into the tooth causing pain and infection. This could mean the tooth has to be root filled or taken out.
There are a number of different filling materials available. Your dentist will advise you on what kind of filling material is suited to your situation.