A crown is a custom-made cover that fits over a tooth. It restores the tooth’s shape, strength and appearance.

Crowns are sometimes called caps.

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What is a dental crown?

A crown fits over the remaining part of a tooth. Once in place, it acts like a natural tooth and helps it work properly again.

Crowns are fixed in place and cannot be removed.

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Why might I need a crown?

Crowns are used for many reasons.

They may be recommended if a tooth:

• Is badly damaged or broken.
• Has a large filling and is weakened.
• Has been root canal treated.
• Is worn down or cracked.
• Is discoloured or uneven in shape.

Crowns can also:

• Support a dental bridge.
• Help hold a denture firmly in place.

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What are crowns made of?

Crowns can be made from different materials. Each has its own benefits.

Porcelain bonded to metal

This is one of the most common types. A strong metal base is covered with tooth-coloured porcelain, so it looks natural.

All-porcelain crowns

Made entirely from porcelain. They look very natural and are often used on front teeth. They are not as strong as some other options.

Gold crowns

Made from gold mixed with other metals for strength. They are very durable and usually used on back teeth.

They are silver or gold in colour.

Ceramic crowns

These are metal-free and very natural-looking. They are strong enough for all areas of the mouth.

Some ceramic crowns can be:

• Designed by a computer.
• Made and fitted in a single visit.

This convenience often means they cost more than other crowns.

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How is a crown fitted?

In most cases, fitting a crown takes two visits.

At the first visit:

• The tooth is shaped to make space for the crown.
• Impressions or digital scans are taken.
• A temporary crown is fitted to protect the tooth.

The final crown is made in a dental laboratory.

At the second visit:

• The temporary crown is removed.
• The new crown is checked for fit and comfort.
• The crown is permanently cemented into place.

Some ceramic crowns can be made and fitted on the same day.

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Are there different types of crowns?

Yes. In some cases, extra support is needed.

If a tooth is badly broken but the root is still strong, a post crown may be used.

A small post is placed inside the root of the tooth.

The crown is then fixed onto the post to hold it securely.

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How long does a crown last?

Crowns can last many years if they are well cared for.

To help your crown last:

• Brush your teeth for two minutes, last thing at night and one other time during the day with a fluoride toothpaste.
• Clean between your teeth once a day using floss or interdental brushes.
• Avoid biting hard objects, such as ice.
• Visit your dental team regularly.

Your dentist can give you an idea of how long your crown is likely to last.

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Need advice?

If you have a damaged or weakened tooth, your dental team can tell you whether a crown is the right option and explain the different choices available.