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What you need to know about dental crowns?

The crown is a prosthetic that fully covers the visible part of a tooth.
Dental crowns are indicated if the tooth destruction is big, his strength is low, risking the loss of it, in case of decay that destroyed a large part of the tooth, in case of a new design, in case of changing a toot position or as element of aggregation in dental works.

To perform a dental crown you have to prepare the tooth in a certain way, by polishing the tooth.

Many times for a dental work (crowns) more specialists are required.

What's the role of dental crowns?
The role of dental crowns: restoration of masticatory function, aesthetics, phonetics and often increasing teeth resistance, by covering them.

Which are situations when crowns are recommended?
1. If the tooth is destroyed and cannot be rebuilt with composite fillings, because of an older treatment

2. If the tooth is fractured after a traumatism, if an endodontic treatment was performed, if the tooth is less resistant.

3. To cover a dental implant or as an aggregation element for bridges or mobile dental works.

4. For patients with dental abrasion and bruxism.

5. Restoring a new vertical dimension.

Types of dental crowns:

In dentistry there are several types of crowns that are different from several points of view: the material used, the aesthetic aspect achieved, the process of manufacture, the specialist’s indications.

The most known crown is the one in ceramic on metal support (non-noble): metalic ceramic crown.

The support is made of a non-noble alloy chrome cobalt (Cr / Co).

The skeleton is thin, about 0,3- 0.5 mm, covered with a layer of opaque to neutralize the colour.

After, the ceramic is stratified according to the desired colour: enamel, dentin, and effects.

There are a wide range of colours that and can be obtained by combining different shades and pigments for a more naturel look.

The disadvantage of metal ceramic crown, over time there can occur a grey coloration on the gums due to the metal corrosion and because the gums withdraw because of biological factors.

Ceramic crown on noble metal support (gold).

The support is made of an alloy containing gold, platinum and other elements.

The thickness of the support is about 0.3 to 0.4 mm, the gold is well tolerated by the body and has no allergic effect.

Processing system is the same as for the metal ceramic crowns.

It is a very strong crown with aesthetic indications for any part of the mouth.

With this kind of crowns do not occur colorations on the gum, because the gold does not corrode in contact with the saliva.

Ceramic crown on zirconia support

The material used in the manufacture of the support is zirconia and it is extremely tough and durable, has a white colour, and a superior aesthetic can be obtained a superior aesthetic.

Like gold, zirconia is well tolerated by the body; it does not create allergies and does not corrode (non metal).

Dental works have excellent precision and accuracy due to the technology used to manufacture the crowns.

The thickness of the support is about 0.5 mm over which is layered the ceramics.

Zirconia ceramic crowns have look that is very close to a natural teeth, with translucent effects.

The required system for performing zirconium is the CAD / CAM system, a sophisticated technology that is not found in any dental laboratory, and this influences the final cost of the dental work.

All together it takes personnel to perform certain manoeuvres.

All ceramic crowns

It is made entirely from ceramic, with no support. There are two types: pressed ceramics E.Max and feldspathic ceramics.

Pressed ceramic crowns

The aesthetics that can be obtained with this type of crown is superior to the other types of crowns. But they require a laboratory with high technological equipment. Those crowns are obtained from a lithium disilicate block which is milled with the CAD-CAM technique.

The thickness of a ceramic crown is about 0.8 to 1.1 mm. This type of crown is used mostly in the frontal area, but due to his high resistance it can be used successfully in the lateral areas. Due to the adhesive cementation technique the resistance is increased.

The technician has to attend follow specialization courses in order to perform full ceramic crowns.

The clinical results obtained are exquisite.

Feldspathic ceramic crowns

It is made entirely from ceramic, with no support. There are two types: pressed ceramics E.Max and feldspathic ceramics.

This type of ceramic crown that has an excellent result from the aesthetic point of view, if a brave technician that knows the art of combining of colours, pigments and textures, performs it. This should be matched by an adequate preparation of the tooth in the studio. The loss of tooth substance by polishing is minimal. The final effect is maximum as naturalness and aesthetics.

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