A filling is a way to restore a tooth damaged by decay back to its normal function and shape. If you have a tooth that requires a filling, the dentist will first remove the decayed tooth material, clean the affected area, and then fill the cleaned out cavity with a filling material. A filling also helps prevent further decay by closing off any cracks or spaces where bacteria can enter.
Composite (plastic) resins are custom made to the exact color of your natural teeth, creating a more natural appearance. White fillings are less noticeable than other materials.