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376 Goodwood Road
Cumberland Park 5041
 
Ph. (08) 8271 62333

 

What is a crown ? (Caps)


Crowns are an ideal way to rebuild teeth which have been broken, or have been weakened due to decay or a large filling.  The crown fits right over the remaining part of the tooth, making it strong and gives it the shape and contour of a natural tooth.  Crowns are sometimes also known as 'caps'.

 
A crown protects and strengthens tooth structure that cannot be restored with fillings or other types of restorations.
 
Although there are several types of crowns, porcelain (tooth coloured crown) are the most popular.  They are highly durable, last many years, but like most dental restorations, they may eventually need to be replaced.  Porcelain crowns are made to match the shape, size, and colour or your teeth giving you a natural, long-lasting beautiful smile.
Here is the new crown on a plaster model.

Why do I need a crown?

There are a number of reasons.  For instance:

  • Your tooth may have been weakened by having a very large filling
  • You may have discoloured fillings and would like to improve the appearance of the tooth
  • You may have had a root filling which needs a crown to protect it
  • You may have had an accident and damaged your tooth
  • It can help hold a bridge or denture firmly in place.
 

What does getting a crown involve?

The process for a crown requires two appointments. Your first appointment includes taking several highly accurate moulds (or impressions) needed to create your custom fit crown. This patient below had a crown replaced due to a poorly fitting crown that was irritating his gum.

 
A mould will also be used to create a temporary crown which will stay on your tooth for approximately two weeks until your new crown is fabricated by a dental laboratory. Make sure you ask your dentist where your crown is being made.
Below (1st image) is the crown from underneath. You can see the grey metal which is covered by the white porcelain as shown in the 2nd image.
 
While the tooth is numb, your dentist prepares your tooth by removing any decay and shaping the surface to properly fit the crown.  Once these details are accomplished, your temporary crown will be placed with temporary cement and your bite will be checked to ensure you are biting properly.
At your second appointment your temporary crown will be removed, it is cleaned, and your new crown is carefully placed to ensure the fit is accurate.
 
The 3rd photo is taken immediately after the new crown was cemented. The long suffering gum settled down within days.
You will be given care instructions and encouraged to have regular dental visits to check your new crown.
 

How are crowns fixed to teeth?

Once the fit and appearance of the crown has been checked - and approved by you - it will be cemented in place with special dental cement.  The cement forms a seal to help hold it firmly in place.
 

Will the crown feel different?

Because the shape of the crown will be slightly different from the shape of your tooth before it was crowned, you may be aware of it to begin with.  Within a few days it will feel like the rest of your teeth. Occasionally crowns need some adjustment if they feel higher than the surrounding teeth.  If it is at all uncomfortable ask us to check and adjust it.