Cermet crown on the tooth. Which is better, the prices are set, how much it costs, photo, reviews

Dental crowns made of sintered metal on the teeth - the most common variant of prosthetics. They come in single or part of the bridge of 4-5 units. Mounted components on own teeth or implants, which prolongs their lifespan.

What is the metal crown?

Metal-ceramic crown - a tip that simulates the shape of the tooth, with all its anatomical features. It has carved fissures (deep portions that extend to the enamel-dentine border). To fix the product used composite or glass ionomer cement on the treated teeth.

The present composition crowns metal frame covered by the ceramic layer. Her tone is difficult to distinguish from the natural color of the patient's teeth. If the basis for the installation of the product badly damaged, then to strengthen it mounted metal tab.

The frame is made of hromokobaltovogo, nickel-chromium alloy or zolotoplatinovogo. Precious metals are used in the case of a patient of allergy or rejection of standard crown.

Pros and cons of the material

Teeth (cermets on teeth looks aesthetically conventional metallic articles), and is put on the top and on the bottom row.

They have such advantages:

• with qualitative performance they do not differ from the natural teeth of the patient;
• cast frame made of metal provides high structural strength;
• long service life;
• the versatility of the product: can be used for the repair of single teeth or bridge constructions;
• materials which make crowns, do not cause the development of infections and inflammatory processes in the oral cavity do not injure the soft tissue, they are non-toxic;
• artificial elements well with masticatory load, without changing the taste of the food;
• ceramic layer is resistant to propagation of pathogenic micro-organisms, which is important for people with periodontal diseases;
• the color of the product does not change for a long time;
• relatively low cost.

But such crowns have drawbacks:

• the need to remove a large part of the dental tissues - 1.5-2 mm;
• pain and cyanosis gums habituation period after installation;
• depulpation need tooth (pultpa may get burned and die during Sanding and inflammation manifest weeks after fixation crown);
• due to the presence of a metal frame the product stands out from the natural dentition.

Over time, because of the constant stress of chewing gum upper and lower falls, so the yellow base becomes noticeable. To avoid the problem, experts are made of white metal frame (zirconia) is applied or brachial weight (ceramic layer covering the gums and place the crown compounds).

If a prosthesis several teeth, the difference between natural and artificial crowns invisible.

The different metal-ceramic crowns?

Crowns (cermet on the teeth of a zirconium alloy looks more natural) are not only made of metallic materials, but also all-ceramic. They differ in strength and appearance. The first option looks artificial and is cheaper.

Whole ceramics often used for prosthetic front teeth, since it has excellent aesthetic qualities. Products with a metal frame mounted on the chewy bits.

Can I put a metal-ceramic crowns on the front teeth?

Contraindications to the installation of cermet on the front teeth do not. However, this option is less attractive than the all-ceramic.

Types of metal crowns

Crowns (per tooth cermet set after pre-treatment) in its composition contains frame for strength of the product. All used alloys are resistant to rust, not oxidized and does not cause an allergic reaction. Metal makes the construction of a solid along the entire length.

The most commonly used materials are:

Alloy	Characteristic
titanic	Metal is compatible with biological tissues, but the crown is different artificial appearance. This alloy is the most durable, but the product obtained bulky and thick, so it is rarely used
On the basis of precious metals	More other compatible with biological tissues and does not provoke an allergic reaction, but a lower strength. Used to set the single crowns
zirconium oxide	The base of the crown is similar to frosted glass, so not selected when the omission of the gums

Products based on gold additionally possess bactericidal properties, however shown to people with periodontal diseases.

Crowns on the front teeth

Products on the front teeth should be strong, reliable and attractive. To this end, the vertical line between the incisors should be held in the middle of the face. Horizontal front teeth are located exactly parallel to the eye line.

Relative to each other crown should be placed symmetrically. If the front teeth to load too much, then there is risk of damage to the ceramic layer of the cutting edge, as it is delicate. To avoid problems during installation specialist crowns conducts correction of occlusion using articulating paper.

Crowns on posterior teeth

The major mechanical loading test posterior teeth, so the crown for them must have high strength and the presence of protrusions in relief providing thorough chewing of food.

Due to the large contact area between the upper and lower crowns of the pressure on them is reduced, so the risk of cracking or chipping is reduced. Cermet in this case is preferable, because it has a large margin of safety.

Metal-ceramic crown with shoulder

Artificial products are not produced with a ledge. This fragment has the tooth to which the crown is worn after grinding. The stopper serves to more solid fixation and support of the crown.

Metal-ceramic crown with first weight

When deletion gum at their junction with the crown visible dark gray band or metal particles, which deteriorates the aesthetic function of the dentition. To resolve this problem, use the shoulder mass. To remove this lower portion of the metal carcass, at the place which fits a particular ceramic mixture strength. Simple weight quickly breaks down without support.

Indications and contraindications for installation

Crowns (cermet on the teeth permanently fixed in a few months after the consolidation) have such indications for the installation:

• severe destructive processes in the teeth caused by tooth decay or mechanical damage;
• the patient's use of outdated prostheses which need to be replaced;
• damage to natural hard tissues crowns: fluorosis, abnormal formation of the enamel layer;
• presence of allergic reaction in the patient to other materials;
• partial loss of teeth;
• Increased speed erasing bits;
• congenital or acquired anomalies of the teeth structure.

But there are contra-indications:

• Children under 16 years (increased load on a base which can be destroyed completely);
• Bruxism or other loss of masticatory muscles, in which the jaw is strongly compressed and the patient begins to gnash their teeth;
• tangible effacement of dentition (before installation of crowns requires a prosthetic treatment to restore the normal position of the bite).

Do not install a cermet on the lower incisors. They have a thin wall, however when overloading occurs pulp damage and its subsequent destruction. When periodontitis mild or moderate replacement crown is made after the course of treatment.

Prepared products are mounted on the teeth for a few months, during which time the expert observes that there are no complications or rejection of artificial material living tissues. After that bits are fixed permanently.

Preparing to Install

To crown is well kept, and the patient did not experience discomfort from the tooth is cleaned up to 2mm hard tissue. This process is painful and often accompanied by the development of inflammation in the nerve, however pulp removed. For dissection using boron with the tip of the desired shape.

The preparation process consists of several stages:

1. Sawing grooves correction remove solid layers of the tooth.
2. Otshlifovki oral and vestibular parts natural crown. Without this procedure is impossible to achieve a snug fit products to the stump and gums.
3. Preparation of the cutting edge or occlusal surface.
4. Bilateral turning of the side parts in contact with other teeth. On the validity of this procedure depends on the density of the crown lock.
5. Lead gingival retraction cord with the installation.
6. Production of the ledge on which the crown will be fixed.

At the last stage, finishing the dental stump. ultrasonic, turbine or laser technical instruments are used for the preparation of the installation area. Their choice depends on the anatomy of the teeth. If the pulp is removed, no further preparation is carried out without the use of anesthetics.

After Sanding tooth hard tissue is exposed to pathogenic microorganisms. To stump is not destroyed, it is covered with a temporary crown. At this time, oral care should be strengthened.

Installation steps for tooth crowns

Cermet crowns on the teeth take root from 1 week to 2-3 months.

The installation process includes the following stages:

Stage	Characteristic
Remediation oral	Visual inspection and x-rays of the teeth of both jaws, from which developed a recovery plan crowns. At this stage the patient has taken allergoproby on materials to be used for manufacturing a cermet article. In the presence of foci of infection in the oral cavity must be eliminated from them. Another patient is required to treat channels eliminate tartar and plaque. If the attachment is done on a tooth with a living pulp, make sure you entered the anesthetic drug. If earlier it was a seal, it is replaced
Laboratory	During the preparation of dental prosthetics with their cast is removed, by which an individual is made a plaster model. He should repeat all the anatomical features of the terrain and the dentition. The material used for this process, does not shrink or change shape over time. Experienced professionals make a few casts of the silicone mass. During the manufacture of the individual model, the patient uses a temporary prosthesis
Fitting and installation	For the production of crowns of leaves up to 1 week. The first fitting is carried out before the product processing is completed. It must sit firmly on the cult, not fly. Accounted for close fitting crown to the adjacent teeth, fixing the edge. If necessary, adjust the shape of the product. After obtaining an accurate sample, a metal frame covered with a layer of enamel proper shade close to natural color. The first time the prosthesis is attached temporary adhesive composition that will provide an opportunity to evaluate the wearing comfort items to notice symptoms of allergies or inflammation. If a person's response is good and there are no complaints, the elements are fixed permanent cement. To become firm, the crown is irradiated with ultraviolet light. Excess cement is removed immediately, because it is corrosive and may damage the mucous membranes

Eat food after the installation of the crown can be 2-3 hours, and the maximum load the jaw only a day later.

How often should I visit the dentist when wearing crowns?

When installing specialist artificial crowns must attend at least 1 time in six months, if the patient has no complaints. If there was inflammation and pain, the doctor should contact immediately.

The service life of metal-ceramic crowns

Warranty lifetime prosthesis is 1-2 years old, and with proper care they will last up to 10 years.

On the duration of use is influenced by such factors:

• Proper preparation of a tooth base to be worn on the crown: depends on the strength of fixing of the product;
• quality of the readjustment of the oral cavity, the treatment of pathologies of the teeth and gums;
• type used in dental materials;
• experience of the dentist and dental technician;
• timeliness and accuracy of the oral care;
• Proper distribution of masticatory forces.

Poor fixing crown is fraught with the fact that they will slide from the die in a few days. In this case, there is a possibility of destruction of the stump.

Caring for metal-ceramic crowns

Despite the fact that such products are not subject to the formation of bacterial plaque, they require regular cleaning in the morning and evening. Brush made sweeping movements in the direction of the cutting edge.

Particular attention is required the junction of the gum with a crown. The toothbrush should have a stiffness which is suitable for natural teeth, and should be changed quarterly.

Monitor is required and interdental spaces, which used flossovaya thread. If you do not pay attention to this area, the food eventually destroy cement, locking crown, and provoke the development of caries. Use a thread throughout the day after each meal and at bedtime.

Clean the interdental space will help a small brush with fine bristles. Professional cleaning is done twice a year. If chronic gum disease, the doctor should attend more often - once every 3 months.

How much are the crown-metal?

On the cost of the product affected by the following factors:

• prestige and location of the clinic, the experience of the dental technician;
• the price of the materials used: if the product was used precious metals, it is increased by 2-3 times;
• the duration and extent of remedial measures;
• term production of the product;
• quality ceramic mass;
• the existence of temporary products.

If used materials of domestic production, its value does not exceed 5000 rubles for crowns. For the German ceramics have to pay 8,000 rubles. If the products are used for the production of precious metals, its price is from 15,000 to 50,000 rubles. Price of temporary crowns varies between 6000-7000 rubles.

Put on the crown of the cermet on the teeth quickly, if they are made exactly according to specified parameters. Timely and proper care is able to prolong their service life. If this bit flies, the specialist can put it in place, pre-adjusted.

Registration of the article: Vladimir the Great

Video of the metal-ceramic crowns

How to fix the cermet on the tooth: