Teeth on the teeth are set in the case where the tooth is broken and not possible to recover it by means of sealing. Modern technologies and materials for crowns allow you to set your teeth on such prostheses which does not differ from healthy natural teeth.
In any case it requires artificial crown
Natural crown (the part of the tooth that protrudes above the gum) are often destroyed by opportunistic bacteria, constantly living in the mouth. In case of insufficient oral hygiene
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bacteria multiply in large numbers and are deposited on the surface of the tooth enamel
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Highlighting enzymes that erode the hard tissues of the tooth. The cause of tooth decay can also be injury or too much load on the teeth, leading to their premature abrasion. Premature erasing teeth can also be caused by the peculiarities of the human dental enamel.
Finally, a tooth, for some reason, it may change color (e.g., after treatment). To mask this defect also often required artificial crown.
Restoration of the tooth with an artificial crown
Artificial crowns relates to fixed types of dentures, which means that it is established and secured so that it can not be removed on their own, without the involvement of a dentist.
Dental crowns can be made from many different materials. Not long ago, the choice was not so great: metal or plastic. And they both crowns a very low aesthetic qualities and were very noticeable in the mouth. And if metal crowns may last a long time, the plastic quickly wore out and often cause allergies.
Today, at the request of the patient can be set as the bits of metal and plastic (they are cheaper), and modern materials - porcelain and metal. Porcelain crowns are beautiful, but short-lived, and is characterized as a cermet excellent appearance and durability.
There are certain rules of installation of artificial crowns. They must be made exactly in the form of a tooth removed or destroyed, it is also desirable to match the artificial tooth natural color (unless, of course, it's not metal crown, which in any case will be different from the rest of the teeth). The material from which made the crown must be biologically neutral, non-allergenic and does not react chemically with the tissues of the mouth.
Crowns that are installed on the teeth, can carry a different function: to restore the shape or color of the tooth (crown restoration), to be a support for a variety of dental prostheses (crowns fixing) or temporarily protect the teeth to be treated, from external influences (provisory crowns).
Traditional dental crowns
Traditional or slightly outdated types of dental crowns
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include metal and plastic crowns.
Metal crowns good on posterior teeth - today and they basically set in this field, since they are durable and durability. For manufacturing metal crowns there are many different alloys of precious metals (gold and platinum, silver and palladium), and the crowns of less expensive alloys and cobalt chromium, titanium, steel (including special plated in gold). It is an ideal coating for posterior teeth.
Plastic dental crowns are made by punching, so they are different low-cost price. But these advantages of plastic crowns and ends: they are fragile, rapidly change their color and are often the cause of allergic reactions
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. But this kind of crowns is perfect for a provisional (temporary, during the treatment of the tooth) prosthesis.
Modern types of dental crowns
For modern types of dental crowns are made of porcelain and metal-ceramic crowns.
Porcelain dental crowns look very nice because of the translucency, which is peculiar only to natural teeth. But these teeth are very fragile, often crack and break. Today, therefore, porcelain crowns put quite rarely and only on front teeth.
More often used for prosthetics cermet. The basis of the cermet is a metal frame (today it is most often made of zirconium oxide, non-metal, but it combines perfectly with the dental tissue), which is covered with porcelain. This combination of zirconia and porcelain making artificial crown is not only beautiful in appearance (all properties of porcelain preserved), but also durable, so cermet suitable as a prosthetic anterior and posterior teeth.
Today, losing a tooth - not a tragedy, even if it's a front tooth, which is the most conspicuous place.
Galina Romanenko