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One of the oldest and most effective ways of protecting teeth is to fit a dental crown over the top. A dental crown is a ceramic or metal and ceramic cap that is designed to fit over the damaged tooth, covering all parts of the tooth above the gum line to act as a barrier to further damage. A dentist will first need to remove some of the existing enamel so that the crown can fit comfortably over the top. The crown, which will have been made in laboratory conditions to be the same size and shape as the original tooth, will then be cemented over the top using composite bonding.
Crowns are made from metal and ceramic as these are very versatile and strong materials. Ceramics such as porcelain also have a very similar appearance to tooth enamel, giving an improved aesthetic appearance. Once firmly in place the crown will perform all the functions of the original tooth.
Crowns are also used after certain dental surgeries and treatments to add a dimension of protection to the teeth. If dental decay has caused significant damage that a filling is not sufficient to protect the tooth, then a crown may be used to offer greater protection. Crowns are also used after root canal treatments to prevent further infection.
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