The aim of a crown is to protect the existing tooth from fracture or breakage, where the tooth has been damaged from decay, trauma, large and extensive restoration, and after root canal treatment. Crowns can also be used in Cosmetic dentistry, where there may be a need to whiten, reshape and re-align a tooth or teeth. They can be perfectly matched to the colour of their neighbouring teeth, and do not stand out.
The Crown covers the visible part of the tooth, and is a bonded covering or cap that is cemented with a special dental cement.
Your Crown may be constructed out of either porcelain, porcelain fused to metal, and gold, which have varying strengths, appearance, durability and cost.
A Bridge is used to replace one or more missing teeth. It is constructed by placing a crown over a tooth adjacent to the gap which has an artificial tooth anchored to it.