A crown is an artificial such, shaped to resemble a
tooth and made from porcelain, porcelain bonded to a metal base or gold.
It is used to restore a tooth which has been heavily filled over a number of
years resulting in it becoming weak and/or unsightly, or a tooth that has
broken down to a level that a routine filling would not be successful.
Equally, crowns can be used to improve the appearance
of front teeth that have become heavily worn down or damaged as a result of
accident or decay.
As long as there is a healthy tooth root present, most teeth can be crowned.