CrownsWhy Is a Dental Crown Needed?
A dental crown may be needed in the following situations:
What Steps Are Involved in Preparing a Tooth for a Crown?
We offer both in-office cerec crowns and crowns fabricated by our lab. Preparing a tooth for a lab fabricated crown usually requires two visits to Unionville Dentistry, the first step involves examining and preparing the tooth, the second visit involves placement of the permanent crown. First Visit: At the first visit, we may take an x-ray to check the roots of the tooth receiving the crown and surrounding bone. If the tooth has extensive decay or if there is a risk of infection or injury to the tooth's pulp, root canal treatment may first be performed. Before the process of making your crown is begun, Dr. Singh will anaesthetize (numb) your tooth and the gum tissue around the tooth. Next, the tooth receiving the crown is shaped down along the chewing surface and sides to make room for the crown. After reshaping the tooth, a restorative hygienist will use impression material to take an impression of the tooth. Alginates of the teeth above and below the tooth will also be taken to make sure that the crown will not affect your bite. The impressions are sent to our dental laboratory where the crown will be fabricated. The crown is usually returned to our office in 2 to 3 weeks. During this first office visit Dr. Singh will make a temporary crown to cover and protect the prepared tooth while the crown is being made. Temporary crowns usually are made of acrylic and are held in place using temporary cement. Also during this visit, we select the shade that we want the crown to be. Second Visit: At your second visit, Dr. Singh will remove your temporary crown and check the fit and colour of the permanent crown. If everything is acceptable, the new crown is permanently bonded in place. What are Cerec Porcelain Restorations?
Cerec porcelain restorations are used to make inlays, onlays and crowns. They are the most aesthetic substitute for natural enamel. It is the strongest tooth coloured, non-mercury material available to restore teeth. Cerec restorations as compared to resin restorations have significantly less post-operative sensitivity and are much more resistant to wear than composite resins. Cerec porcelain restorations wear at about the same rate as natural tooth structure. The cerec restorations are biocompatible, bond to tooth structure and provide a perfect seal between tooth and filling therefore, minimizing the chance of recurrent decay. The Cerec restorations enhance the structural integrity of the tooth by strengthening the tooth, therefore being less likely to fracture, chip or break under normal chewing forces. How is a Cerec Porcelain Restoration made?
Cerec restorations only require one appointment. The procedure begins with local anesthetic and the placement of a rubber shield (rubber dam) around the tooth. Once the tooth is prepared, a thin layer of non-reflective powder is applied to the prepared surface. Using a special camera, a scan of the preparation is taken. The Cerec machine works from this scan, which is an "optical impression" of your tooth. The restoration is then designed and the porcelain is milled to very exacting dimensions. Once complete, the porcelain restoration is bonded to the tooth and polished. The bite is adjusted as necessary. How Long Do Dental Crowns Last?
Crowns are a long lasting restoration. The life span of a crown depends on the amount of "wear and tear" the crown is exposed to, how well you follow good oral hygiene practices, and your personal mouth-related habits (you should avoid such habits as grinding or clenching your teeth, chewing ice, biting your fingernails and using your teeth to open packaging). Does a Crowned Tooth Require Any Special Care?
While a crowned tooth does not require any special care, remember that simply because a tooth is crowned does not mean the underlying tooth is protected from decay or gum disease. Therefore, continue to follow good oral hygiene practices, including brushing your teeth at least twice a day and flossing once a day-especially around the crown area where the gum meets the tooth. If you live in the Greater Toronto Area, Markham or Unionville and would like to learn more about in cosmetic dentistry including crowns, call us at 905-479-7777 |
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Beauty is power; a smile is its sword. - Charles Reade |
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