A crown is a full tooth cover restoration that is placed over a cracked, broken, root filled or a heavily filled tooth to protect the tooth against fracture. Some people refer to dental crowns as caps. Dental crowns cover all the surfaces of a tooth whereas veneers only cover the visible outside surface of the tooth.

Indications for having a dental crown
• If a patient grinds their teeth and teeth have chipped and fractured, dental crowns offer protection against further tooth fracture.
• During root canal treatment, a large portion of the tooth is removed and the remaining tooth tissue can fracture and discolour after root canal treatment. A crown can increase the survival rate of a root canal treated tooth and protect the structure of the tooth and increase its longevity and its aesthetics.
• If a large part of a tooth has broken and the rest of the tooth is at risk of further fracture, a dental crown can protect the remaining part of the tooth from fracture.
• If a large part of a tooth is lost to dental decay and there is a risk that if a filling is used to restore the tooth, the filling could come out or fracture. Crowns are largely stronger that fillings and more able to protect against tooth fracture.
• For cosmetic purposes, people who have large discoloured fillings on their front teeth may opt to have crowns to improve their smile.

What is the procedure for having dental crowns?
• Assessment of the tooth clinically and with a radiograph to ensure the roots of the tooth are sound and the tooth is vital. Preparation of the tooth for a crown and taking impressions for the dental technician to construct the crown. A temporary crown is provided in the meantime to protect the tooth and restore the look and function.
• Optional appointment with the laboratory technician for crown colour selection in the case of front crowns.
• Fit of the final crown once its returned from the laboratory.( approximately 2 weeks after the impressions are taken)
How long do crowns last?
Dental crown lifespan depends on how well they are maintained. With good maintenance they can last around 20 years.

Metal Ceramic Crown  These crowns have a metal core inside and porcelain bonded to their outside. The core inside can be made from precious, semi-precious or non-precious metals and it provides the strength behind these crowns.  However the porcelain bonded to the metal cores is not very strong and from time to time can fracture.
Metal Ceramic crowns are usually used on back teeth although some dentists use them for front teeth as well. The aesthetics of Metal Ceramic crowns is not as good as all ceramic crowns, however their strength is higher.


All Ceramic Crown – Cosmetically these crowns are best and are usually used for front teeth. These crowns have no dark colour metal inside them and if in time the gum recedes, there will be no black metal margin on show around the crown.
With regard to the strength, depending on the type of the crown, most of the ceramic crowns are as strong as the conventional metal containing crowns. An example of this would be Zirconium containing crowns that have a white Zirconium core with porcelain on top.

All Zirconium Crowns – These crowns look yellow/brown in colour and are usually used for back teeth. These crowns have no porcelain, so the risk of fracture is less than all ceramic and metal ceramic crowns but as they have no porcelain, their aesthetics is compromised compared to all ceramic crowns.

Gold Crowns – These crowns are the strongest crowns available but are poor from an aesthetic point of view. They are usually used for back teeth especially in people who suffer from grinding and clenching habits.
Gold crowns can be made very thin hence need minimal tooth reduction and are less destructive of tooth tissue compared to metal ceramic and all ceramic crowns.

Please contact White Rose Dental Studio for an appointment and more information.