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Full Coverage Dental Crowns
When a tooth has been extensively restored either by large fillings or a previous crown then full coverage of the remaining tooth structure is required to regain strength and durability. The tooth has to be reduced sufficiently such that the final crown looks natural and does not interfere with the bite position. These are the most destructive restorations to the tooth structure however if carried out correctly they can last a lifetime. Conventional crowns have a thin layer of gold under the porcelain to increase strength.
The latest material advances have produced all-ceramic crowns with almost the same strength. There are many different manufacturers of these materials most notable at present being PROCERA by Nobelbiocare and LAVA by 3M.
The core of the crown is fabricated from a layer of solid alumina or zirconium (produced by a computer design and machining facility) before being sent to our ceramist for the final layer of aesthetic porcelain to be added. Without the layer of gold all-ceramic crowns have almost as good aesthetics as porcelain veneers.
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A crown is an artificial restoration that fits over the remaining part of a prepared tooth, making it strong and giving it the shape of a natural tooth.
A crown is sometimes known as a ‘cap’. Crowns are an ideal restoration for teeth that have been broken, or have been weakened by decay or a very large filling. |
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A dental crown could be used for a number of other reasons, for instance:
- you may have discoloured fillings and would like to improve the appearance of the tooth
- you may have had a root filling which will need a crown to protect it
- it may help hold a bridge or denture firmly in place.
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