What Is A Crown
A crown is a covering placed over a tooth, enveloping the biting surface and all the sides of the tooth.
Why Is A Crown Placed On A Tooth
A crown protects a tooth from fracture, increases the longevity and durability of the tooth, restores function of a tooth and improves the esthetics of a tooth.
A tooth may have huge fillings and could have developed fracture lines on the tooth from biting pressure. The continuous pressure on the tooth from just normal chewing forces could cause the weakened tooth to crack. In addition, if a person has the habit of grinding or clenching their teeth, the chances of the tooth fracturing are even greater. A crown placed on that tooth protects against tooth fracture.
A tooth that has root canal treatment becomes dry due to the loss of the nerve and blood supply to the tooth and becomes brittle and is very likely to fracture. A crown placed on a root canal treated tooth protects the tooth from fracture.
If a tooth is chipped, discolored, irregularly shaped, out of alignment with the adjacent teeth, placing a crown on such a tooth greatly improves the appearance of the tooth.
Crowns are also placed on implants to replace missing teeth.
What Are The Different Kinds Of Crowns And What Are They Made Of
Crowns can be either Temporary or Permanent.
Temporary Crowns are usually made of some kind of plastic and are usually placed while waiting for more permanent procedures to be ready.
Permanent crowns can be metallic or non-metallic. Metallic can be all-metal crowns, which will either be gold or an alloy similar to stainless steel. However, as most people do not like the metal to be visible in their mouth, most often the metal crowns have a layer of porcelain on all the visible surfaces- these are called porcelain-fused-to-metal (or PFM) crowns.
PFM crowns can be very strong and durable and serve satisfactorily in the mouth for many years. However, one major drawback of PFMs is that as the gums recede with the passage of a few years, the margin of the crown is visible as a black, unsightly line just above the gum margin. Patients usually are very conscious of this, especially if the dark discolored margin is visible right in the front of the mouth, and usually have the crowns remade.
Today, an increasing number of crowns have no metal at all, they are made of a strong, durable, glass-like ceramic material called zirconia. Zirconia is the strongest material used in dentistry today and is very esthetic. It can be used for single, individual crowns as well as a combination of crowns to make a bridge to replace missing teeth.
For porcelain crowns and bridges, as well as all the latest procedures and techniques in cosmetic dentistry and implants in Newtown, Levittown and the surrounding areas in Bucks County and Philadelphia, call us at Pearl Dental Arts at 215-949-8000 (Levittown office) or 215-504-4070 (Newtown office). Or you can contact us online to request an immediate appointment.
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