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Cermet crowns

Modern dentistry offers many options for dentures from various materials. However, metal ceramics crowns are considered the gold standard in the field of dental prosthetics. And for good reason, because they meet all modern aesthetic requirements, while being quite reliable in operation. In addition, low cost makes cermet affordable for everyone.

The above characteristics are largely due to the structure of the structure, the frame of which is made of metal. On top, the crown is covered with ceramics, which allows you to choose a shade that is closest to the color of a natural tooth. Ceramic-metal crowns on teeth are one of the options for fixed prosthetics. They can act as an independent prosthesis (with destroyed natural teeth or implants), or used in cases where fixation of the arch or bridge is necessary.

Indications and contraindications for installing a ceramic-metal crown on a tooth
You can put a ceramic-metal crown on a tooth in such cases:

it is required to preserve an excessively destroyed chewing tooth if filling is ineffective;
the need to use a bridge when one or two adjacent teeth are missing in the oral cavity;
with a large number of missing teeth, when a clasp prosthesis can be used;
when prosthetics with implants.
As for contraindications, their list is very short. Contraindications to the use of ceramic-metal crowns are the following factors:

the clinical manifestations of periodontal disease, manifested by shakiness of the teeth;
metal allergy;
abnormal bite;
low crown part of the tooth, since the preparation of tooth tissue necessary for fixing the crown will lead to an additional decrease in its height and the strength of the installation of the crown.

The advantages of ceramic-metal crowns
The most demanded today ceramic metal crowns are used everywhere – both with removable and non-removable prostheses. And there is an explanation for this:

High structural strength, long life and damage resistance;
Excellent aesthetic characteristics;
Reliable protection of the tooth located under the structure;
High probability of compatibility with body tissues;
Easy care and good adaptation;
Safety – the design is made of non-toxic material;
Relatively low cost.
disadvantages
The ceramic-metal crown has a large number of different advantages, due to which for many years it has been the most preferred option for prosthetics. However, with the advent of more advanced metal-free products, its shortcomings became more obvious. Among them:

Shorter service life. After a while, enamel chips may be noted, a dark metallic rim from under the crown may appear;
The need for significant tooth sharpening to fix the crown;
Lack of aesthetics. The use of this type of construction is possible only with prosthetics of the chewing group of teeth, which is less noticeable in the oral cavity.

Types of metal-ceramic crowns
Ceramic-metal crowns are of several types, depending on the metal used in the base:

Base metal alloys: chromium-nickel, which is often allergic, and cobalt-chromium, which is subject to corrosion, which causes darkening of the gums. A distinctive advantage of this group of metals is the cheap design.
Alloys of precious metals (gold-platinum-palladium alloy) have the best aesthetic characteristics, do not cause allergies, and are optimal in terms of price-quality ratio.
The titanium alloy is hypoallergenic, non-corrosive, fully compatible with biological tissues.

How is the installation process
To put a ceramic-metal crown on a tooth, it is necessary to go through several stages:

Examination of the oral cavity and hardware diagnostics for the presence of inflammatory processes.
Sanitation of the oral cavity in case of detection of foci of infection.
Depulpation – removal of the neurovascular bundle of the tooth.
Grinding the tooth surface – such an amount of tissue is ground that it is necessary to install the carcass of a certain thickness.
Impressions from the upper and lower dentition.
Plaster jaw modeling.
Production of plastic prostheses and their temporary installation.
The manufacture of the metal base of the prosthesis.
Ceramic metal alloy coating.
The application of fluoride paste on the tooth surface in order to protect against damage under the prosthesis.
Fixation of the prosthesis on temporary cement for trial wearing and the possibility of further correction if necessary.
The final fixation of the ceramic-metal crown on permanent cement.

Care for ceramic-metal crowns
Caring for artificial teeth is not much different from caring for natural teeth. It is enough to brush them twice a day with toothpaste and avoid crushing hard objects.

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