Crowns

What is a crown?

A crown is an artificial restoration that fits over the remaining part of a prepared tooth, giving it the shape of a natural tooth as well as adding strength. A crown is sometimes referred to as a ‘cap’.

Why do I need one?

Crowns are an ideal restoration for teeth that have broken, or have been weakened by decay or a very large filling. A crown could be used for a number of other reasons, for example,

To improve the appearance of a tooth if there is a discoloured filling present. A tooth which has had a root canal treatment usually indicates a crown to add strength and to protect what is left of the tooth. It may be used to hold a bridge or denture in place.

What is a crown made of?

Some of the popular materials are listed below:

• Porcelain bonded to metal – Porcelain is layered on a substructure of metal
• Porcelain Crowns – The full crown is made from porcelain, however not as strong as bonded crowns as above
• All ceramic crowns – This modern technique offers a metal-free alternative, which can give the strength of a bonded crown and the appearance of a porcelain crown
• Gold alloy crowns – Gold crowns can be white or gold in colour

How is a crown prepared?

The outer surface of the natural tooth or the existing filling will be prepared to leave an inner strong core. An impression will be taken and sent to the lab with the tooth temporised. At the next appointment, the crown is fitted.

Does it hurt to have a crown?

No. A local anaesthetic is used to num up the tooth. It should feel no different than when you are having a filling done. If the tooth has already had a root canal treatment with the nerves taken out, they may not be any need for an anaesthetic.

How long will a crown last?

Properly maintained crowns should last for many years. Follow the dentists advice for proper maintenance.