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dental crown
On 2010年08月11日 by 佚名 Resource:本站原创 Hits:

Introducd:                    A dental crown  is a tooth-shaped "cap" that is placed over a tooth - covering the tooth to restore its shape and size, strength, and/or to improve its appearance. The crowns, 

 

   A dental crown  is a tooth-shaped "cap" that is placed over a tooth - covering the tooth to restore its shape and size, strength, and/or to improve its appearance. The crowns, when cemented into place, fully encase the entire visible portion of a tooth that lies at and above the gum line.

 

   If part of your tooth is missing or broken off, and a "filling" cannot be supported by the remaining tooth structure, a crown will be necessary (some people refer to a crown as a "cap"). If your problem is a cracked tooth, the sooner it is treated and crowned, the more likely it will be saved. Once the crown is cemented on, it is stationary and works a as protective cover. The crown will add extra strength to your tooth structure and will improve the appearance of the tooth.
 

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     When do you need a Crown?

  • To strengthen a decayed, cracked or broken tooth.
  • To protect a tooth that"s at risk for cracking. This measure helps to prevent problems such as pain and/or the need for a root canal.
  • To improve the appearance of the tooth.
  • To improve the cleansibility of a tooth.
  • After a tooth has root canal therapy.

     Types of Crowns
  • metal-fused-to-porcelain
  • gold-fused-to-porcelain
  • porcelain jacket crown
  • circonia-base crown ( CERCON and PROCERA)
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