Features of manufacture and stages of installation of crowns E-Max

The earliest ceramic crowns on a zirconium frame were made in 1994 by a dentist from Sweden, M. Anderson. Such a material is as much like a natural tooth enamel, but the orthopedic ceramic structures were not strong enough.

The German company Ivoclar Vivadent, which produced the E-Max crowns, helped to solve this problem. This is one of the newest technologies in the dental field, combining strength and aesthetics.

In the dentistry, the product from Ivoclar Vivadent is a non-metal ceramic E-Max made on the basis of glass ceramics( lithium disilicate) and has the following qualities:

• reflects light;
• can easily be toned;
• looks natural.

It has been clinically confirmed that the material( lithium disilicate) for the product is the same in strength as steel( 470-530 MPa), and this allows them to be installed on the front and chewing teeth, with varying degrees of load.

Indications and contraindications

E-Max have been widelyuse in the following cases:

1. For the manufacture of all-ceramic orthopedic construction.
2. When restoring using ceramic inlays. Such an E-Max insert made of ceramic is distinguished by its high strength, hygiene, aesthetics and other qualities of a light seal.
3. If it is necessary to put the whole ceramic product on implants.
4. Installation of veneers is required to fix the dentition defect. In this situation, when performing veneers, it is necessary to prepare the surface of dental units( within 0.3-0.6 mm) to increase naturalness.

If to speak about contra-indications, E-Max production is not shown to all patients:

• to persons with progressive bruxism and pathological specificity to compress jaws;
• , most of the front units are severely damaged and / or there are many composite seals, leading to a breakdown in the strength of the product;
• numerous lesions of caries;
• not compliance with the rules of hygiene for oral care;
• pathological defects of the occlusion( especially pronounced direct bite).

Advantages and disadvantages

The E-Max system has a number of advantages that distinguish it from similar leading products:

• wide application practice all over the world;
• high light conductivity;
• improved aesthetic qualities of the product due to a wide range of shades;
• the original appearance retains its entire service life;
• strength of the product comparable to the strength of steel;
• are excellent biocompatible;
• are characterized by an increased index of homogeneity of the material;
• does not require special skills and means to care for the structure;
• are not susceptible to formation of stone and plaque;
• product durability;
• is a non-metal frame that gives the lightness of the product;
• does not cause an allergic reaction to constituents;
• the thickness of a non-metal ceramic crown is reduced to reduce the surface turning of the enamel;
• for the installation of crowns, you can use the traditional method of cementing.

The shortcomings of E-Max ceramic products can be attributed to the high cost of crowns, which strongly affects the client's budget. In dentistry products made of pressed ceramics are slightly less durable than crowns made of zirconia. This slightly affects the limited use of the product from the individual characteristics of the structure of the teeth and the state of health of the patient.

Types of products

German company Ivoclar Vivadent offers a wide range of products used for restoration in the dental field:

1. Veneers made of zirconia for single and partial denture and implant methods. A sufficiently strong construction for increased load, most often not requiring tooth preparation.
2. Veneers made from press ceramics are used to restore the lateral and frontal units of the dentition.
3. Tabs Inlay / Onlay, allowing you to return the destroyed teeth, when you need to keep a fairly large area of ​​native tissue.
4. E-Max are installed both in a single case, and on several adjacent teeth, and in situations of severe disruption of their integrity.

E-Max crowns are divided into the following types:

1. Pressed ceramics, based on lithium disilicate: frameless or base material - zirconium oxide.
2. Pottery E-Max, used for facing purposes of pressed ceramics and prosthetic constructions made of zirconium dioxide.

Steps and technology for making crowns

The procedure for making crowns has the following algorithm:

1. Initial consultation and examination of the patient, as well as the necessary studies( X-rays) to identify indications and contraindications to prosthetics.
2. The process of preparation of dental units for crowns.
3. Removing molds from both jaws of the client.
4. Creates a dummy from gypsum.
5. Restorative modeling of wax reproduction.
6. Production of a crown from E-Max ceramic billet by pressing in a special furnace using nanotechnology IPS Empress.
7. The color and coating of the glaze of the orthopedic product with a ceramic mass and its further firing.
8. Finish staining with gingival, pulse, dentine effect masses and IPS E-Max Ceram Shade dyes.
9. Fitting and installation of crowns.

The process of creating E-Max keramikoronok occurs in two ways, allowing you to get high enough criteria for the finished product:

• using hot pressing with layered ceramic spraying;
• by computer modeling CAD / CAM with further milling.

As a result, the client finds a Hollywood smile, made on individual indicators and with the highest accuracy.

Preparation and installation of

The E-Max system is installed in several stages.

Preparatory stage

A dentist examines the oral cavity and teeth. Assesses the condition of the dentition or its individual units, which are subject to recovery.

If necessary, studies can be assigned: X-ray of the jaw - provides an opportunity to understand the structure and condition of the dentition system.

Orthodontist makes oral treatment, removes biological deposits, optional bleaching procedure. In the presence of an inflammatory process, a treatment course is conducted.

Dissection

The minimum layer( 0.3-0.6 mm) of the enamel surface is removed to give the desired shape. Then, using a drill, the damaged part of the tooth is removed.

The specialist does the removal of the impressions. After that, a temporary seal is set on the turned units.

Production

Ready-made prints are given to the dental technician in the laboratory, where the process of manufacturing is made using the gypsum model. Taking into account physiological features of the jaw, a cast of wax is modeled, on the basis of which the crown of ceramic billet is extruded using E-Max technology.

Usually, manipulations to create a permanent product take up to 14 days. During this period, the client gets used to the foreign object( temporary filling) in the oral cavity.

The

E-Max is installed in two ways:

1. On the prepared teeth with a dental primer( requires later polymerization with light) or cement. A traditional technique, characterized by a more dense contact between the crown and the tooth and increased strength.
2. On pre-installed implants( with complete absence of dental units).The product is fixed using an abutment attachment. Such a technique can be used for bridging prosthetics by attaching a bridge to 2 implants.

Care instructions

Caring for E-Max ceramic crowns is very easy and simple. There are some recommendations for proper care so that you can significantly extend the service life of a metal-free product:

1. Dentists advise using a toothbrush with soft bristles and a paste made from natural ingredients for gentle cleaning.
2. It is recommended to brush your teeth twice a day( morning-evening) and after each meal.
3. The interdental space is cleaned with flosses, and the gingival margin with a special brush.
4. Preventative inspection every six months.
5. If you experience discomfort and discomfort in the area of ​​the crowns, you should immediately seek help from a specialist. In the case of an inflammatory process on the gums, it is necessary to begin a therapeutic course in order to avoid the spread of inflammation to the root system. If there is a lesion of the root, it may be necessary to remove the crown if other methods of therapy are ineffective.

When carrying out the recommendations of a qualified specialist and observing the hygienic norms for the care of E-Max metal-free crowns, the operating period of the socks is at least 15 years.

The cost of

The cost of E-Max depends on many factors:

• is primarily the materials necessary for the prosthetic procedure - ceramics for prosthetic construction, plaster and wax for impression, retraction thread, fixative agents;
• services of dentist-orthodontist, dental technologist and assisting personnel;
• level of the clinic.

Approximate price for E-Max ceramic products:

Type	Price
E-Max crown	From 16000 rubles
Veneer from ceramics press E-Max	From 13000 rubles
Ceramic veneer based on zirconium dioxide	From 11000 rubles
Zirconium crown with	implant From 15000 rubles
Inlay / Onlay tabs( ceramic-free ceramic insert of E-Max ceramics)	From 2100 rubles

Customer's opinions

Despite its advantages and disadvantages, there are various opinions about the E-Mak productwith, namely, metal-free crowns.

Most consumers are satisfied with the product, although they write that the price is quite high and "hits hard".But given the strength, durability and aesthetic beauty, the financial deficit is taking to the back burner.

Before deciding on prosthetics, it is necessary to get the recommendations of a specialist who can make the right choice based on the individual characteristics of each client.

E-Max non-metal products are very popular not only in Europe, but also in Russia, thanks to their simplicity of care, durability, reliability, safety, biocompatibility, durability and unlimited aesthetic possibilities.

According to statistics, more than half a million customers around the world have installed E-Max crowns. And, at the same time, interest in the unique E-Max technology from the German firm Ivoclar Vivadent, both from specialists and from customers, continues to grow steadily.