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 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.
For teeth that are badly damaged, dental crowns can be an effective treatment option. The dental crown procedure utilizes tooth-shaped coverings to restore strength and eliminate discomfort. In addition, dental crowns may be used to anchor a dental bridge or to cap a dental implant post.
A dental crown may be needed in the following situations:
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To protect a weak tooth (for instance, from decay) from breaking or to hold together parts of a cracked tooth
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To restore an already broken tooth or a tooth that has been severely worn down
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To cover and support a tooth with a large filling when there isn't a lot of tooth left
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To hold a dental bridge in place
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To cover misshaped or severely discolored teeth
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To cover a dental implant
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Dental crowns made of porcelain fused to metal are stronger than all-ceramic versions and more aesthetically pleasing than those made of metal. However, their metal shell gives porcelain fused to metal crowns an opaque appearance. Because they lack the reflective quality of natural teeth, porcelain fused to metal crowns are not as discreet as all ceramic crowns. Additionally, over time, a thin metal band may be visible along the gum line with this type of crown.
Typically, the dental crown procedure is completed in two stages. During the first stage, the dentist removes portions of your natural tooth’s structure to accommodate the dental crown. Surrounding teeth may also be prepared in this way. An impression is made and sent to the lab, where your dental crown is created. A temporary crown will be in place between visits to ensure the most natural look and feel. When you return to the dentist’s office, the temporary crown is removed and your new, custom dental crown is securely bonded in place.
For some patients, the dental crown procedure is altered to meet specific goals. For example, if crowns are being utilized to anchor a dental bridge or as a dental implant restoration, the steps in the dental crown procedure will be slightly different. Also, teeth with extensive damage may require that a root canal be performed prior to placing the crown. Additionally, new technology has made it possible to complete some dental crown procedures in a single office visit.
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