Is it possible to put a crown if there is no tooth. How to put a crown of metal ceramics

Installing these dentures need in cases:

• when most of The tooth is amazed by caries;
• strong destruction of the dental (more than 70%);
• the tooth is destroyed after injury, the root should be intact;
• external defects of teeth (hereditary or acquired), change their color when aesthetics suffers;
• the predisposition of the enamel to pathological washes;
• loosening the teeth, which causes periodontal diseases (temporary prostheses at the same time will make them more stable);
• when the bridge is installed, thanks to the crowns it is fixed on the teeth supports;
• the presence of uneven edges on the tooth, which is injured by the mucous.

What material to choose?

Thanks to new developments, in modern dentistry there are several types of materials from which crowns are made. Consider the main of them:

1. Metal - classic prostheses applied already long years. Most often they are made of gold. Pros of such products - durability, reliability and durability. They do not oxidize, have an abrasion coefficient almost like natural enamels, they do not damage opposite teeth. The main disadvantage is minimal aesthetics, because of which they are put on invisible pieces of jaws.
2. Metal ceramics, combining the pluses of metal and ceramics. They have durability, strength and high aesthetic indicators. They are cheaper than all-tempered. The disadvantage of prostheses is a mandatory preparation. large number Alive fabrics before they are installed, as well as the possibility of enamel of enamel on opposite tooth organs. A strip of ferrous metal can also be visible if its edge is lowered or the product was made inaccurate.
3. From ceramics or porcelain make crowns with the most aesthetic look. They are as much as possible with natural teeth and retain their properties for a long time. However, ceramics is significantly fragile and can not always withstand the load on chewing. For this reason, more often, the products from ceramics put on front teeth. The main minus of these crowns is a high price.

Manufacture

Make crowns for made gypsum models. Metal, metal ceramics and ceramics can be applied as a manufactured material.

The manufacture is quite laborious and for a long time, so while the dental technician works above their creation, the patient is put on temporary products from plastics. This restores the aesthetic type of shuffling teeth, and they are protected from exposure from outside and enter infection. These prostheses besides protecting the teeth, it is also allowed to fully use them when chewing.

Dentaling for installation on their crowns

The trough of the teeth is called the preparation. Produce this procedure With the help of bormers in which a diamond boron is inserted. So the tooth can be given to the desired form.

When scraping the living teeth, the procedure is painful, so anesthesia is introduced before it is carried out. If you need to sharpen the depugded tooth, the anesthesia is not always applied, but if the gums are tangled - it is better to produce it.

The orthodontist doctor needs to be overwhelmed with a dental fabric, a layer of which will be equal to the thickness of the prosthesis. Depending on the crown used, 1.5-2.5 millimeters of dental fabric can be removed from all sides of the dental. When fastening cast structures, less scratching will be required, and if you put products from ceramics or metal ceramics - more.

A shard tooth is a cult, where the crown will later be fixed.

How to restore the crown part of the tooth?

Coronary part of the tooth in different cases can be destroyed in different ways, so and restore it different paths. To do this, in the tooth or establish a cultural tab, or put a pin, and this does not affect appearance Tooth.

The pin is a rod with high strength, which is screwed into the root canal after its sealing. It plays the role of the base for fastening the filling material. Then, the tooth is increased and scolded under the prosthesis.

With the help of a cult tab, you can make a very reliable restoration of the dental, which will last long. It is made in a special metal laboratory, which is not toxic. The tone from the coronal and root part. The root is fixed in the channel of the tooth root, and the coronary has an already ready-to-fit crown views on it.

The first stage of the installation - preparatory

Before installing the crown, the dentist should carefully examine the patient's mouth cavity, if necessary, can be made x-ray. Based on the results of the survey, the treatment plan is also recommended for the necessary procedures. It is also important to examine the patient for contraindications and allergies to any material.

The doctor together with the patient is picking up more suitable type Crowns. Specify the timing when prostheses will be made and installed, as well as the cost of treatment.

In the presence of diseases of the gums and teeth in the oral cavity - they are cured.

1. Removes the nerve from the tooth and pulls it out. It is important to sharpen such a layer of the tooth, which will correspond to the thickness of the prosthesis. When attaching a crown on the front units with one root, the removal of the nerve is imperative, because the pulp burn may occur during the scraping. Depulpation of a multi-corneous tooth is not necessarily, because the risk of burns in such a situation is minimal.
2. He treats his teeth who struck the caries. Channel seals. Brushes teeth from stone and plaque.
3. If the dental body is destroyed strongly, its depulsion, fill the channels and recreate the crown part by the filling composition.
4. When attaching a crown on a living tooth, anesthesia is surely used.
5. If there is a seal on the support teeth, it is changed to a new one.

After the preparation of the teeth to the fastening of the prosthesis - they are torn off with them, for which crowns will make in the laboratory.

Laboratory (second) installation stage

According to removed from the prepared dental units, the laboratories are made of plaster tooth models. So the dental technician appears an accurate gypsum copy of the patient's teeth, which makes the most displays all of their features. With the help of these models and further manufacture.

Fitting and fastening - the third stage of installation

Before the crown is installed and even before the end of the manufacturer, produce the first fitting of the prosthesis. Check that she sat on a cult accurately and firmly.

Next, in the product, if necessary, adjust adjustments and continue to form it in the laboratory. If metal ceramics is used as a manufactured material, it is necessary to cover a metal frame of aesthetically attractive ceramic composition.

After completion, the prosthesis is fixed by temporary composition, which allows you to evaluate the comfort when wearing a prosthesis, the possibility of appearance allergic reactions, eliminate the possibility that it will interfere with connecting to opposite teeth. Check the reaction of dental units and adjacent tissues for the presence in oral cavity new element.

At this time, defects of dental canal filling, inflammation or severe pain may appear.

The next defect is the most common: overestimation of bite, which is why it turns out that the prosthesis on the neck of the tooth sits loosely, traumating the gums and appearing its bleeding.

If there are similar complications, measures should be taken to eliminate them.

Temporary prostheses are from two weeks to a month. If the patient's complaints are missing, they are removed, they are cleaned with a dental unit and fasten a constant product with a constant cement. Then make irradiation of the crown by a special lamp that contributes to the solidification of cement. All surplus cement is carefully removed.

On a note: Chew on the tooth, where they put a crown, you can, a couple of hours, and the maximum load can be given on it after one day.

Cases in which the removal of crowns

The need for the removal of the crown can be caused by the reasons:

1. The tooth prepared poorly for the installation of a prosthesis. Statistics shows that 60% of cases of dental channels are carried out with errors. This serves as a prerequisite for the development of inflammation, and the treatment of the tooth leads to the need to remove the design.
2. Error in the manufacture of design. If the product distorts the bite, the neck is loosely covered or causes physical or aesthetic problems, it is removed.
3. Planned replacement. Upon expiration of the service life (usually 10-15 years), the prosthesis change.
4. Damage to the design, the appearance of cracks on it or holes from the washed cement requires urgent replacement of the product.
5. The emergence of complications.

Methods of removal

It is difficult to remove the product, especially if you need to save it to set it again.

If the removal is made due to the design breakdown - it is better to cut it with special tools.

If you need to save a prosthesis, use:

1. Crowns (the most common hooks of the Copp) are special tools in the form of flat hooks that can be automatic or manual. With their help, the prosthesis is removed in terms of connecting it to the tooth.
2. The tongs securely capture the prosthesis with the branches and remove it from the base.
3. Ultrasonic installations. Ultrasound waves are able to destroy the adhesive cement, after which the prosthesis is easy to remove.
4. Pneumatic tools whose use also contributes to the destruction of cement and relieve the removal of the crown.

What are the complications?

Consider complications that can appear after installing crowns:

1. The strong pressure of the product on soft tissues violates blood circulation, contributes to the formation of bedding. The soft mucosa at the same time can die in the place of contact of the gums and crowns. This can develop prosthetic stomatitis.
2. The lesion of the reference dental units of caries. Poor cleaning of the oral cavity or poor-quality preparation of dental organs to the installation of a prosthesis, lead to the accumulation of food particles under the crown, where bacteria caused by the disease.
3. Allergies to metals included in the propestation can manifest itself immediately after installing the structure, but after a while. There is a feeling of burning in the mouth, dryness, inflammation is formed.
4. Galvanic syndrome can be caused by the presence of different metals in the mouth. Education is becoming the result electric currentwhich enhances oxidative reactions. In this case, the patient feels a metallic taste in the mouth, there may be a general ailment, the head, the design and neighboring tooths can be changed.

Each of the listed complications requires a rapid reaction and visiting the attending physician, otherwise you can lose the reference tooth. The doctor will most likely remove the crown, will hold a treatment and put a new one.

The most interested patients questions

Question

Is it painful to install a crown?

Answer

The protection of the prosthesis may cause discomfort, like any other dental procedure. The greatest number An unpleasant feelings fall on the preparation step, including drilling, tinting of dentifursors, clearing and sealing channels. But the fact that mostly fastening the crown is made on depugded teeth, minimize the likelihood of pain. If you are scolding live teeth - apply anesthesia. And the fastening of the crown on the cult goes completely without pain.

Question

What is the duration of the procedure?

Answer

Installation has several stages. To prepare your teeth - you need to visit the dentist from one to two times, and sometimes more. The duration of each visit depends on which teeth it is planned to fasten the crown and their status. To make the crown may be needed for several weeks. For temporary cement, the prosthesis put for a period of 2 to 4 weeks. Then it is fixed finally. Wherein total time, spent on the installation of the crown, can range from 1 to 2 months, and sometimes more.

Question

Do the crowns for live teeth?

Answer

For living multi-cornese teeth, the state of which does not require depulpation, the crown is allowed. You can also put them when installing the bridge when the crowns are attached to the sharpeble healthy teeth.

The dental crown is the most common and current method of prosthetics, which can be used in any injuries, defects and other types of dental destruction. When our teeth do not hurt, we do not think about their role in our lives at all. And only having lost the tooth, we begin to understand it. Modern dentistry allows you to restore not only the form, but also the functionality of lost teeth.

Installing the crown on the tooth - is it hurt?

Preparation for prosthetics is the most unpleasant stage in which: drilling teeth and root canal seals. The prosthetics itself is not accompanied by any painful sensations. This is due to the fact that there are already dead teeth for the installation of the crowns, which are completely painless. There are cases when it is necessary to leave the tooth alive, then the preparation is performed under local anesthesia.

Types of dental crowns

Dentists are currently able to offer various options for dental crowns, which differ in price, material manufacturing, advantages and disadvantages.

• Metal. These are the most common gold teeth. They are distinguished by reliability, durability and durability. They do not oxidize, and the coefficient of their washes can be compared with natural enamel. It is very good, since the teeth-antagonists are not damaged during chewing. This design has only one drawback - not aesthetic appearance.
• Metal ceramics. These crowns are durable, durable and distinguished by good aesthetic indicators. They are cheaper than solidly ceramic prostheses. The disadvantages include the need to prepare a large amount of dental fabrics.
• Porcelain. These are non-vehicle crowns that are considered the most aesthetic. They allow you to perfectly imitate natural teeth, even after a long time, do not lose their properties. However, the ceramics are fragile and can break with a large chewing load.

How to put a crown to the tooth - preparation for prosthetics

If the tooth under the crown is damaged by the carious process, if there is periodontitis or the pulpit of this tooth, then all diseases will have to cure before prosthetics. When depultation, the tooth is carried out such operations:

• nerves are removed from the tooth;
• root channels are expanding;
• channels are seal;
• a seal is installed on the coronal part of the tooth.

How to put a crown to the tooth - the preparation procedure

Painful sensations you will experience in the event that the doctor will handle live teeth. The procedure is carried out under anesthesia. Taking into account the type of the future crown, about 2 millimeters of solid tooth tissue are removed. Alloyed crowns need a smaller tooth piercing, but metal-ceramic and ceramic needed a large volume of stamping.

How to put a crown onto the tooth - removal of blinders and the manufacture of teeth models

After completing the scramblement, the specialist starts with the removal of the blinds of the teeth. From these casts are made gypsum copies of teeth. They maximally reflect the patient's teeth and are used in the manufacture of crowns. If you want to install ceramics or metal ceramics, then first plastic crowns will be installed.

How to put a crown on the tooth - fitting

You also have to carry out more unfinished work. It is done to assess the quality of the metal frame made. If all is well, the specialist will continue to work on the workpiece - the metal frame of the ceramic mass is lining.

Temporary and constant fixation of crowns on the teeth

Before performing a constant fixation of the crown, it is necessary to wait a certain time to see the tooth reaction, check possible disorders of crowns with the rest of the teeth. Simply put, the crown is installed on temporary cement. If after 3 weeks complaints from the patient will not arrive, the crowns are removed, and the temporary cement is cleaned. Crowns are fixed on durable cement.

The appearance of any complication when the pain is felt under the crown is a serious basis for appealing to your doctor. The slightest delay can entail the loss of the support tooth. In complications, the crown is removed and re-prosthetized with the cure of all negative reactions.

In prosthetics, the most time-consuming and important stage is the preparation of teeth. On the this stage Drilling and further fillings are performed, removal of dental stones and other necessary actions. Initially, the specialist performs the operation on the depuulpation of the tooth - the removal of nerve endings. Due to this, the preparation process passes absolutely painlessly. In cases where it is planned to leave a whole, a lively tooth, resort to use local anesthesia. In this case, the only painful sensations are waiting for the patient during an injection, while the effect of the drug will last an average of about two hours.

Below are provided detailed information About how crowns are put on the teeth, namely: preparation, manufacture, fitting, fitting and installing crowns.

Navigating the section:

Cost of installation

Name	Price, rub.
Primary inspection-consultation	0
Metal ceramic crown "Japan"
	5200
	5500
NHS.	3800
KHS.	5000
Metal-ceramic crown "Germany"
NHS using shoulder mass and ind. Selection of color	5700
KHS using shoulder mass and ind. Selection of color	6000
NHS.	4800
KHS.	5500
Zirconium Dioxide Coron	17000
Calcular crown
NHS.	3000
KHS.	3500
Crown stamped	2300
Combined crown	3000
Plastic crown	2000

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Toothproof installation steps

Primary reception at prosthetic doctor

The doctor - a specialist in prosthetics of teeth, conducts the first consultation with the patient, within which the primary examination of the teeth occurs, the specific task is set, the prosthetics are drawn up. The patient also takes direct participation in this process, carefully listens to the recommendations of the doctor and finally approves the action plan. A radiographic examination and an inspection of the state of the oral cavity is carried out on the basis of which the orthopedic doctor nominates its recommendations regarding the desired view Prosthetics and types of crowns.

The treatment plan usually includes:

• Initial preparation of teeth to the installation of crowns (removal of nerve endings, sealing of teeth and channels);
• Selection optimal view crowns on the basis of studies produced;
• Work of the calculation of the terms of treatment, cost.

Initial preparation of teeth

If it is possible to establish a crown on a lively tooth, dentists try to keep them, as such an installation will help significantly increase the term of the further dental service. Most often, this event is possible in the case of large chewing teeth. In this type of teeth, the distance from the enamel coated surface to the pulp is greater than, for example, in single-drank teeth. Due to this, the risk of a thermal burn pulp from turning under the crown is significantly minimized.

In a situation with single-corpus teeth, smaller crowns are required. Initially, in such teeth, the dentist removes the nerves for the prevention of pulpitis. This disease may occur in the case of thermal burns and further inflammation of the pulp. The absence of this prophylactic measure may result in further to remove the crown and re-treatment of teeth.

Before prosthetics, it is necessary to bring the teeth in order. An important point Here is the complete elimination of all diseases of the tooth: caries, pulpitis, periodontitis and others. The process of treatment of pulpitis and periodontitis includes standard procedures: removal of dental nerves, processing and sealing of root channels of guttaperch, installation of the seal to the desired portion of the tooth. In the case of a significant percentage of destruction of the upper part of the dental surface, the dentist will additionally strengthen it in order to avoid loss of the seal.

Ways to restore the destroyed top of the tooth:

• Installing the crown with a pin (on the pin). The essence of this method is the introduction of the root of the root of the root - a special basis, which, in the future, with the help of filling materials, experts restore the crown part of the tooth.
• Using the cultural tab to restore the coronal part of the tooth. Molded from metal in a dental laboratory. This tab consists of two parts - the bases, root part, and the top, sharpened under the crown of the tooth.

The second method is used in medical practice more often due to the fact that the cultural tab can significantly extend the service life of the crown.

Tricks of teeth under the crown

The preparation is the next stage of prosthetics. The orthopedist doctor with the help of bormer, with the use of boron from the diamond, performs neat turning of the teeth. For this procedure, anesthesia is often used due to its pain and trouble. In case the tooth is still alive, the nerve endings remained in it, local anesthesia is a prerequisite. For a depugd tooth, the doctor appoints anesthesia, based on the preliminary examination to minimize damage to the tissue surrounding the tooth.

Depending on the type of future crown and the material from which it will be done, the dentist removes it from the tooth to two millimeters of solid fabric. The volume of the material being removed directly depends on the material of the manufacturer of the crowns. Traditionally, metal, metal ceramics (dental ceramics on a metal frame) and ceramics are used for their manufacture. For metal, a large amount of tissue taken is not required, but for the other two materials it is necessary to thoroughly treat the tooth. The result of this stage will be the "cult" - the rest of the tooth on which the future crown will hold.

Procedure for removing the cast and the creation of a gypsum layout of the teeth

The main objective of the previous stage was the preparation of the base for the removal of the tooth blinds. Specialists of the dental laboratory create gypsum models, on the basis of which the crowns themselves will be created with the participation of a doctor leading a doctor. In high-tech clinics, this stage is gradually displaced by the work of 3D printers.

The process of creating crowns

At the next stage, the dental laboratory specialists, leaning on the surfaces obtained, proceed to the creation of a gypsum model. In case the crowns are planned to be made of ceramics or metal ceramics, temporary, plastic crowns are put. The process of creating crowns from these materials is quite long, and temporary crowns will ensure the protection of the gaining teeth from the influence of factors external environment And they will give a pleasant appearance to the patient's deasty row.

Fitter crown

The penultimate stage of the installation of the dental crown is their fitting. This procedure is very important, because such images determine the quality of the dental equipment. When applying a metal-ceramic frame, the density and accuracy of its landing is determined. In the case of a satisfactory assessment of the patient, the dental technician imposes a ceramic mass on a metal frame.

Temporary fixation of crowns

Before the final installation of crowns, experts produce temporary fixation procedure. The material for temporary fixation is temporary cement. Such cement allows you to further replace temporary fixation to constant without any negative consequences For the tooth itself, since in the case of using a permanent cement, it is possible to remove the crown only by sawing the tooth.

The procedure itself allows you to trace the behavior of the tooth, its interaction with the other parts of the oral cavity, in particular, with antagonist teeth.

Final reception - when they put crowns tooth

After carrying crowns on temporary fixation within 2-4 weeks, they are removed. The doctor examines the field of treatment and, in the absence of contraindications and comments from the patient, after removing temporary cement residues, establishes crowns on an ongoing basis, using already permanent cement.

Stock Foto Mounted crowns on teeth

Fors major circumstances

Even with careful preparation, a properly conducted treatment and manufacture of dental crowns, situations arise in which they need to remove them.

Cases in which the need to remove crowns may arise:

1. Error attending physician on any of the stages. In view of human factorinsufficient experience for performing such complex procedures The dentist could not quite in good faith to fulfill his work. This can lead to complications, inflammatory processesdescribed above.
2. Errors when removing the cast and creating crowns. Technical errors The patient may not even notice at the stage of temporary fixation of the crowns. However, sooner or later they will let them know.
3. Planned or urgent replacement of crowns. Even the most durable crowns need to be replaced by the expiration of their service life. Also, do not forget about circumstances that do not depend on the doctors (damage to the crowns, failure to comply with the recommendations of doctors).

The procedure for removing the crown is rather unpleasant. In order to remove the crowns, the doctor saws them with disks or boron, risking damaging the mucous membrane of the oral cavity. In this case, the use of anesthesia is recommended.

Complications and problems with teeth under crown

After installing the dental crown, complications are possible. Discomfort, pain, burning is possible. Any such cases requires a visit to the dentist to identify the cause and immediate treatment. The most frequent complications when wearing crowns are:

• Painful sensations in the field of tooth;
• Inflammation of the guy under the crown;
• The occurrence of cyst, flux or fistula.

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In people who have lost one or more teeth, especially in the visible zone, the question arises "why is it dental crown? ". But there are situations when there is a need to put the crown even with all the teeth:

1. The natural coronate of the tooth is destroyed due to an injury or an extensive carious process, but the root is saved and can perform a reference function. In this case, it is possible to install the crown directly to the root of the tooth from the cultures (while maintaining sufficient volume of own solid tissues). Either it is necessary to use for prosthetics of pins or tabs that allow you to give the entire design of greater stability.
2. Natural patient's teeth have defects of form or color and look not aesthetically. Dental crowns correct similar problems, giving a smile attractive look.
3. All teeth are preserved, but there is a pathological abrasability of enamel. In this case, the crown serves to protect the dentals from the impact of negative factors.
4. In case of diseases of the periodontal in some cases, the risk of loosening the teeth. It is possible to use temporary crowns that will be able to keep their teeth in place until recovery.

What dental crowns put

Currently, dentists can offer their patients a few options for dental crowns that are manufactured from different materials And have their advantages and disadvantages.

Metal

Dental prostheses made of various metals are a classic prosthetics option and are applied for many decades. The most common option is gold teeth.

The advantages of gold crowns lies in their durability, strength and reliability. Such elements are not subjected to oxidation, and their abrasibility coefficient is as close as possible to natural enamels, which does not cause damage to the tooth antagonists during chewing. The disadvantage of such structures is one - an extremely unstattic look, so they are more often installed in the invisible for the foreign zone.

Metal ceramics

Metal ceramics combines the positive properties of both metals and porcelain materials. Such crowns are durable, durable and have good aesthetic indicators. Their cost is an order of magnitude lower than that of all-ceramic prostheses. The disadvantages are the need to prepare a large volume of natural tooth tissues before installation, as well as the risk of increasing the coefficient of the enamel of the enamel on the antagonist teeth. In addition, when omitting the edge of the gums or inaccurate manufacturer of the crown itself, the visible strip of ferrous metal may appear.

Ceramic or porcelain

All-tempered measurement crowns are the most aesthetic. They definitely imitate natural teeth as much as possible and do not lose their properties even after a long time. But ceramics is quite fragile and may not withstand a big chewing load. Therefore, they are installed most often on the front teeth. The disadvantage is their high cost.

Preparation for prosthetics

The process of preparation for prosthetics with the help of a dental crown consists of several stages.

1. Evaluation clinical picture and the state of the oral cavity of the patient. At this stage, the volume of future interventions is discussed, the variety of crown is determined and the treatment plan is drawn up.
2. If necessary, the treatment of inflammatory diseases of the gums, periodontal, caries is carried out. All old seals on the support teeth are necessarily replaced with new ones.
3. If the use of metal ceramics is assumed, the tooth depulpation is most often carried out in order to prevent inflammatory lesions.
4. The preparation of the tooth is removal using solid tissue tools of a certain thickness. For metal structures, it is sufficient to remove 0.3 mm enamel and dentin, and when using metal ceramics, the slothing layer can reach 2 mm. In addition, for more reliable fixation of the prosthesis, the preparation of teeth with indentation is necessary.
5. After the teeth are treated and dispersed, prints are made using a special paste, on the basis of which the dental crowns are manufactured in the dental laboratory.
6. After the manufacturer of the prosthesis is carried out several fittings, on which the accuracy of manufacturing the design, its convenience and correspondence in color and structure to the rest of the teeth are determined. Very often the finished crown is fixed on temporary cement up to 3 months. This is necessary in order for the patient to finally be convinced of her comfort and properly restoring chewing function.

In the photo: the process of installing a crown on the tooth

How to put a crown tooth: stages and installation technology

Installation and fixation of the crown is the final stage in prosthetics.

1. After removing the crown from time cement, it is thoroughly cleaned.
2. The sweeping toothput is processed by a sandblasting machine for giving it to the surface of micro-processing.
3. The final fitting is carried out, and the doctor is convinced that the dental prosthesis is located correctly, does not interfere with the free closure of the teeth.
4. On the interior surface The crowns are applied a special dental cement, it dresses to the tooth. After that, the design is exposed to a special lamp that accelerates the hardening process.
5. All excess cementing composition are carefully removed, since even a minor amount can cause strong irritation and inflammation of the gums.

After an hour per installed crown, you can give chewing load. And in maximum pressure can be rendered on it.

Fastening on castles

One of promising directions The prosthetics is the fastening of crowns with special locks. This method allows you to turn the support teeth minimally, it facilitates the installation and removal of structures. The fixation of such prostheses begins with fastening with the help of cements of locks on the teeth that perform the function of the support, followed by installing and fixing the crown.

Fastening on implants

Such prosthetics does not require the treatment of neighboring teeth. The design itself can be installed in two ways:

• Helical fixationWhen the crown is connected to the abutment adapter outside the oral cavity. After that, the whole design is screwed to the implant with a screw that passes through the hole in the prosthesis. Then channel closes Special sealing material. This method is more suitable for single crowns.
• Cement fixationwhen the abutment is first fixed to implanted rootAfter that, the crown is fixed with the help of cement. This method is preferable when the prosthetics of multiple teeth is performed simultaneously.

How to remove crowns from teeth

Removal of dental crowns is not simple action, especially when this is speech On the full preservation of the prosthesis in order to subsequent installation of it back to the previous place.

If it is necessary to remove the crown because of its breakage, when the repair does not specify, it is cleaned with dental instruments and are removed from the toothbrush.

To preserve a prosthesis when removing a crown with a tooth, there are special tools:

• Crowns (The most common tool model is a hook of the cap) - are flat hooks, with an automatic or manual mechanism, which allows after fixing on the border of the crown with a tooth, apply a certain force and remove the crown.
• Forceps - Tools that allow you to securely lock the crown between the branches and remove it from the base.

In modern dentistry, the crowns are removed using ultrasonic installations. When the tip is passed around the area of \u200b\u200bthe prosthesis of the prosthesis with the cults, ultrasound causes cropping and cracking in cement, after which it is removed without much difficulty.

Another gentle method for removing the crowns is the use of pneumatic tools, under the action of which the cement destruction and the destruction of the structure from the support occurs.

Complications after prosthetics

After installing crowns on the teeth, complications may occur:

1. Prosthetic Stomatitisarising from excessive prosthetic pressure on soft tissue gums. This causes a circulatory disruption and the formation of laying out and dieting the mucous membrane at the boundary of contact with the crown. The prevention of this complication is to form a "washing canal" - a small gap on the edge of the gums.
2. Carides Supported teeth. This problem It may occur in the case of an incomplete disease at the preparation stage, or with poor-quality oral hygiene, when the prosthesis accumulates the flare and residues of food that serve as a nutrient medium for carious microorganisms.
3. Allergic reactions to materialsused in prosthetics. The first symptoms of it can appear both immediately after the installation of the prosthesis and after a while. The main manifestations of allergies: dryness and feeling of burning in the oral cavity, rashes on mucous and skin covers.
4. Galvanic syndrome - It occurs when prostheses are located in the oral cavity using various metals. This leads to the appearance of a galvanic current that stimulates oxidation processes. The main manifestations of complications: an unpleasant metal taste in saliva, malaise, chronic headache, changing the color of crowns and neighboring teeth.

The emergence of any of the complications, especially when the tooth is hurting under the crown, requires urgent appeal to the attending physician. Delay is fraught with a loss of supporting tooth. Most often complications require removal and re-prosthetics after the treatment of all negative reactions.

When conducting prosthetics, what crowns install and on which teeth only solves the patient. But at the same time, it is mandatory to listen to the opinion of the attending physician and thoroughly fulfill all its recommendations.