A dental filling is done to restore a tooth that has been damaged by decayed or chipped due to trauma. A filling not only restores the shape of the tooth, but also works to seal the tooth to help prevent further decay.
Fillings can be completed by using a few materials, but the most popular are composite(tooth colored) or amalgam(silver colored). Composite fillings are very popular due to the filling matching the tooth's color. Amalgam, although less popular, is a stronger material that is better to fill larger cavities in teeth.
In a standard filling procedure, a dentist will start by removing any decay and soft tooth structure. This allows the filling material to rest against healthy tooth structure for a secure fit. After all decay is removed and the area is prepped, a dentist will then place a filling material that is best for your tooth. Once the filling material has been placed, the dentist will shape the filling so the tooth looks and feels like natural tooth structure.