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Crowns

What Are Crowns?

Crowns are used to rebuild teeth which have become damaged, have large fillings or have been weakened by caries (dental decay). Sometimes crowns are also used to improve aesthetics at the front of the mouth. The crown fits over the remaining tooth after it is prepared restoring its natural shape and contour.

What Is Involved In Having A Crown Made?

A crown is custom made to fit your tooth by skilled dental technicians working in a dental laboratory. In order for the technician to make the crown the tooth must first be prepared by the dentist in the following stages;

  • Reduction & shaping of the tooth to create a ‘core’ with an even space for the crown.
  • Taking of an impression of the prepared tooth and adjacent teeth
  • Taking of an impression of the opposite arch to allow the laboratory to see how you bite together.
  • The shade of teeth will be recorded to allow the technician to match the crown (in the case of a porcelain crown) to your existing teeth.

The impressions are then sent to the dental laboratory where the impressions are cast using a dental stone which produces an exact replica of your teeth, including the prepared tooth.

How Long Does It Take?

To prepare and fit a crown usually takes two visits;
One visit to prepare the tooth, make the impressions & record the shade and one visit to fit the permanent crown. Tooth preparation normally takes around 45 minutes.

What Are Crowns Made From?

Crowns can be made from a wide variety of materials, these include:

  • Gold Crowns – Gold or precious metal crowns are very strong and hard wearing, they are usually used in back teeth where they less visible.
  • Porcelain Bonded Crowns (PBC) – PBC’s have an inner layer of metal onto which tooth coloured porcelains are built up to produce a naturally coloured tooth.
  • Porcelain Crowns – Porcelain crowns or porcelain jacket crowns (PJC’s) are constructed entirely from dental porcelain which is a type of glass. They are used mainly on front teeth where aesthetics is of particular importance but are not as strong as PBC’s.
  • Zirconia Crowns – are tooth coloured crowns and much stronger than all porcelain crowns. They can be used on both front and back teeth.

Will The Crown Look Different To My Existing Teeth?

No – A crown is produced to restore the tooth’s natural shape, where your teeth can be seen such as those at the front of the mouth the crown will be made of porcelain or have a layer of porcelain to reproduce and match the shade of adjacent teeth.

Will It Feel Different?

The shape of the crown may differ slightly from the natural tooth and if the tooth was badly decayed or broken before the crown was made it may feel quite different. The new crown may feel strange for a few days but this feeling should soon go away. The crown should not feel high or uncomfortable, if you are in any doubt please ask one of the dentists.

How Long Will The Crown Last?

A crown should last for many years but this depends on how well the crown is looked after once it is fitted. Although the crown will not decay the area where the crown meets the tooth can begin to decay. Particular attention to this area must therefore be paid to this area when cleaning you teeth.

 

FAQ’s

Why would I need a crown?

What is a post crown?

Are there any alternatives to post crowns for root-filled teeth?

What will happen between visits?

How is the crown fitted?

How long does the treatment take?

Does it hurt to have a tooth prepared for a crown?

What will it cost?

How do I care for my crown?

 



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Site last updated: 11/05/2017