If a kid has a cavity in a baby tooth, it means that oral bacteria cause decay. To stop the process of decay, the dentist removes the infected area and the hole will then be sealed with filling material. Several different types of fillings can be used by a dentist. Usually, the doctor uses Amalgam or Composite Fillings.
When a tooth is affected by dental decay, the removal of that decay followed by tooth restoration to its original form and function is very important and must be performed as soon as possible.
Amalgam (silver) filling is one form of restoration. The procedure includes the removal of decayed portion of the tooth and filling the empty space with an amalgam paste that is carved into the tooth structure replacing the original tooth surface(s).
When a tooth decay is not very extensive (usually limited to the chewing surface and is shallow), often times a composite filling might be placed to restore a tooth to its original form and function.
A composite fill is a resin restoration that comes in various shades of white to mimic the original tooth color. This type of restoration is very hygiene sensitive and if not cared for properly, might leak and stain overtime.