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Dental Crown

A dental crown is a restorative oral prosthesis, similar to a cap, and that is shaped and made to look like a real tooth. A crown is usually placed over a tooth that was damaged by either decay or by a fracture, to cover and protect it by reconstructing its shape, its exquisiteness, its size and its strength.

Once cemented, a dental crown completely covers the portion of the tooth which is above the gum. Porcelain is the material that is mainly used to make a crown because of its aesthetic qualities, with visual properties that are very similar to dental enamel. Therefore a crown looks like a real tooth in its shape and colour.

Reasons why crowns are necessary

A deteriorated tooth, which requires a dental crown, may be alive or devitalised by a root canal. If the tooth is alive, it would need a crown if it previously had a big cavity or a fracture that was maintained far enough from the pulp chamber (nerve). There are several reasons why a tooth would need a crown:

  •  To protect a weakened tooth (by tooth decay for example) against rupture, or to keep together a cracked tooth.
  •  To restore an already broken tooth or a severely worn out tooth.
  •  To restore a tooth that has had a root canal and a post.
  •  To cover and support a tooth that had a large filling when there isn't enough healthy tooth structure left to be restored by a new filling.
  •  To cover a tooth that is malformed or severely discoloured.
  •  To cover a dental implant.
  • couronne

Types of crowns

Several materials can be used to make a dental crown. There is no universally ideal material. The choice depends on many factors including the location of the tooth and the aesthetics that are required.