What is the legal guarantee for metal-ceramic crowns?

Treatment guarantee

There are two types of guarantees that the doctor of our clinic is guided by when performing the full scope of services to restore your dental health - unconditional (mandatory) and predictable. The warranty period for any treatment begins from the moment the service is provided and requires you to comply with the conditions for proper care of your teeth and installed restorations (filling, prosthesis, veneer, etc.).

Projected guarantees for treatment

The doctor identifies the specifics of your case and, based on his experience and available treatment technologies, informs you about the service life of a filling, veneer, crown or prosthesis. When the warranty period is difficult to determine (hygienic cleaning, surgery, whitening, etc.), the doctor will notify you in advance about the success rate of this procedure.

What is the success rate of procedures at the Dent-a-med clinic?

• 95% of successful cases of root canal treatment using filling
• 100% - with in-office whitening of 2-8 shades, depending on the structure of your enamel and the chosen system
• 90% – elimination of gum and periodontal inflammation (with mandatory adherence to the doctor’s recommendations at home)

The success rate of treatment is influenced not only by the quality of materials and the skill of the doctor, but also by the condition of your teeth and health, which is why we carry out diagnostics so carefully. During the warranty period, any defect that arose through no fault of yours will be corrected free of charge (minor defects, a filling has fallen out, a prosthesis has been damaged). If you experience discomfort at the end of the warranty period, we will eliminate it at a 30% discount.

Unconditional guarantees for treatment at Dent-a-med

This type of guarantee is always provided and without any conditions. This is a requirement of the Federal Laws “On the Protection of Consumer Rights” (No. 2300-1 dated 02/07/1992) and “On the Fundamentals of Protecting the Health of Citizens of the Russian Federation” (No. 323-FZ dated 11/21/2011), as well as standards for the provision of medical care and patient management protocols , approved by orders of the Ministry of Health of the Russian Federation.

Based on legal requirements, you are guaranteed:

• providing complete information about the diagnostics performed
• holding a consultation or consultation
• implementation of procedures by doctors of appropriate qualifications
• keeping track of your health status
• establishing a complete diagnosis with detailed recommendations
• calculation of the total amount upon completion of the treatment plan

The safety of the intervention is guaranteed by compliance with sanitary and epidemiological requirements and the use of only technologies tested and approved by the Ministry of Health of the Russian Federation. We select anesthetics taking into account age and contraindications, so the treatment is safe for your health and as painless as possible. To prevent undesirable consequences, a series of follow-up examinations is prescribed. Free preventive examinations are also available at the Dent-a-med clinic.

In our dentistry, the quality of work is controlled. We will take into account your wishes and carry out dental restoration in compliance with the standards of domestic and European dental practice. We will take into account the objective state of your health so that the installed restorations last longer than the warranty period.

Metal ceramic prostheses

Metal-ceramic dentures are frames made of non-precious, semi-precious or precious metal onto which special dental hypoallergenic ceramics are sprayed or poured (depending on the manufacturing method). The material is able to reproduce the color and structure of natural dental tissue, while it does not fade or absorb dyes. The following types of prostheses exist.

1. Crowns.
   They are used mainly for prosthetics in the lateral zone to restore teeth that have been destroyed by more than 2/3. Read more in the article.
2. Dental bridges.
   Serve to replace several missing teeth in a row. The most reliable bridge structures consist of two crowns and two artificial teeth between them.
3. Clasp dentures.
   Removable structures in which the arch (clasp) and the frames of the crowns attached to it are made of metal. They are used when fixed prosthetics are impossible for one reason or another.

Is it possible to repair metal-ceramic crowns?

In a very small number of cases! There is a small chip in the corner of the crown, which can probably be polished. If the chip is larger, it affects the closure of the teeth (bite), if the chip is down to the metal, if the chip is on the contact surface - all these are indications not for repair, but for replacing the crown. In any case, everything is decided at a personal meeting.

METAL CERAMICS FOR TEETH. What are the stages of prosthetics?

At the Belgravia Dental Studio clinic, we install metal-ceramic crowns of ideal quality, following all treatment protocols.

• First, preparation before work - diagnostics: computed tomography. Only in our clinic, Diagnocat artificial intelligence is used for CBCT analysis! The program uses 3D images to determine the condition of the teeth and helps the doctor plan treatment.
• Preparation - grinding down the tooth for a crown. A very important stage! We'll tell you about it separately.
• Taking impressions, ordering a crown in the laboratory. While the restoration is being made, you will receive temporary crowns. You will need to wear them for about 2 weeks (average duration) while the permanent crowns are made in the laboratory.
• Fitting. The new restoration needs to be functional (not too high or low) and look natural in the dentition. We’ll also tell you more about fitting.
• Installation of ready-made structures. At this stage, we also use magnification to create an ideally tight and high-quality connection between the crown and the tooth shoulder and place the crown securely. This will allow us to maintain tightness for many years and prevent tooth decay under the crown, as well as maintain healthy gums.
• Doctor's recommendations: care, home hygiene, professional hygiene and examination schedule.

Methods of installing crowns on implants

How to install a metal-ceramic crown is of interest to many patients. Let us next consider the sequence of how metal-ceramic dentures are placed on artificial teeth (implants).

Cement fixation - features and indications

The abutment is inserted and fixed into the implant, then the metal-ceramic crown part is placed on the aba. Between the last two components there is a layer of adhesive composition (glue), which tends to slightly dampen chewing loads.

Cement fixation is very convenient to use, but has significant disadvantages. In particular, such a crown cannot be removed without cutting. In addition, the cement sags over time, that is, a gap appears between the product and the abutment. And if excess material is used, then the implant may be overloaded.

Screw fixation - features and indications

With screw fixation, the following happens - aba into the implant. At the same time, there is a hole inside it. The crown is created from an impression, placed on the abutment, after which a small screw is screwed in on top, very firmly connecting all the parts into one whole. The screw is invisible from the outside, because the hole above it is filled with a composite composition in the shade of natural enamel.

This option is more preferable because it allows the crown to be easily removed. In addition, the load on the implant is distributed more evenly.

You can see what the patient’s smile looks like before and after installing a metal-ceramic crown on an implant in the photo.

Forecast of treatment results and guarantee

At the first appointment, the doctor conducts diagnostics, assesses the condition of the patient’s teeth, existing diseases, and pathologies. Based on its results, he determines a treatment plan and offers the patient possible methods. For each of the methods that can be used to solve dental problems, there is a certain probability of achieving the desired result. Assessing this probability, the doctor forms a forecast for eliminating pathologies and diseases. This forecast takes into account the risk of complications, adverse reactions of the body to the therapy, and other factors. Based on it, the doctor determines the warranty period.

Before starting to treat teeth or gums, the patient needs to discuss with the doctor possible prognoses when using certain methods, materials, and designs. Dentists at the DentoSpas clinic recommend choosing treatment plans that will provide the longest service life for the restored teeth.

At DentoSpas dentistry, there are official guarantees for endodontic, periodontal, orthodontic, and surgical treatment. We use certified and safe materials and designs, for which separate warranty periods are established. At the first appointment, after diagnosis, examination, and choice of treatment methods, our doctors provide patients with accurate information about the duration of the warranty and the scope of the warranty obligations.

Standard periods during which the warranty is valid

The answer to the question of whether there is a guarantee for removable dentures at all is clearly positive. According to the law of the Russian Federation, it is assumed that any dentistry must give its patients confidence: the product will not fail in the near future after installation, and the work is done with high quality. And undertake to correct easily remediable as well as significant deficiencies in the activities of their specialists if they are identified within the warranty period.

And the best confirmation of this fact is the warranty. According to them, if the design breaks down, is found to be defective, or was originally installed incorrectly, then the clinic will correct it, repair it, or replace it with a new one (of equal value, made of the same material) free of charge. And in some cases, they will even be required to return the money spent by the patient on treatment and reimburse expenses incurred [1] to eliminate the shortcomings of the work done by third parties.

Important ! Most clinics do not provide a guarantee for temporary removable and fixed dentures, which are supported by natural teeth. After all, such products are installed at one of the stages of treatment and must be replaced as soon as possible. As for permanent dentures, all of them: a single crown, an inlay, partial, complete removable and fixed products for replacing all teeth in a row, as well as a bridge prosthesis in dentistry must have a guarantee.

What to expect if you have installed removable products? As a standard, most clinics provide a warranty period for prostheses for a period of 1-2 years. If we are talking about fixed devices, then this is 2 years. Less common are cases where dentistry gives an increased guarantee of 5 years or even indefinitely, and even with free service. But usually such conditions can be met with expensive treatment. For example, complex dental implantation in 1 day with the installation of permanent structures. Or veneers and lumineers.

Expert opinion
Yurkevich Vadim Igorevich
Specializations: Orthopedic dentist

Experience: 16+

“The guarantee can be established by a doctor on an individual basis if the patient initially has a history of diseases such as bruxism, diabetes mellitus or oncology, periodontal disease. Or if there are specific features of professional activity (sports, work in hazardous chemical production). In these cases, it is not always possible to predict a long-term successful result of treatment and prosthetics.”

What needs to be proven in court

To win in court, you need to prove several key facts:

1. The clinic provided poor-quality dental services - because of this, your health was harmed.
2. The first clinic is to blame for all this.
3. Because of the harm caused, you incurred expenses - you will need to prove them: provide receipts for medications, examinations, appointments with other doctors.

If you manage to prove all this, most likely the court will rule in your favor and oblige the clinic to pay you compensation.

Regulations on the provision of guarantees in dentistry

This is a document designed to regulate possible controversial situations that may arise between dentistry and the patient. At the same time, each medical institution develops its own regulations on warranty services, but always on the basis of legislative acts in force in the territory of the Russian Federation.

The following information must be included in the regulations:

• period of fulfillment of warranty obligations,
• services covered by the guarantee,
• conditions under which re-treatment is possible free of charge,
• conditions under which the clinic will have to return the payment previously made by the patient.

Before signing a contract for prosthetics in a particular institution, carefully study this provision. If you have any doubts about certain points, do not hesitate to discuss them with your doctor.

Warranties for dentures

The service life of dentures and the guarantee provided by the clinic are two completely different things, and when choosing structures for replacing teeth, you should remember this.
Unfortunately, the exact warranty periods are not specified anywhere. However, there are a number of documents that regulate the rules for the provision of medical services, the mandatory provision of warranties and the return of cost or adjustment of the product in case of damage due to the fault of the contractor. Among such documents are the law “On the protection of consumer rights”, “Rules for the provision of paid medical services”, as well as the law “On the fundamentals of protecting the health of citizens in the Russian Federation”. It is worth remembering that each clinic has its own guarantees for dentures, but most dentists announce the actual service life within approximately the same limits. However, there is a caveat: in all medical centers they will be able to replace or adjust your prosthesis free of charge only if the patient complies with all the instructions issued by the attending physician.

How to extend the life of dentures?

The service life of metal-ceramic structures varies depending on the materials used and the structure itself that was used. In total, their service life reaches seven or more years. If the metal frame was created from zirconium, the service life immediately doubles and reaches 15 years.

And yet, it is better for each person to comply with a number of requirements that make it possible to extend the service life of metal-ceramic structures than to rely on the warranty obligations of the dental clinic.

To extend the service life of metal-ceramic prostheses, it is necessary:

• regularly carry out high-quality hygiene procedures;
• After each meal, rinse the mouth and remove any remaining food stuck between the teeth using dental floss;
• undergo preventive examinations with a dentist at least twice a year;
• treat teeth in a timely manner if traces of caries are detected;
• carry out professional cleaning of the mouth, removing tartar and plaque.

Practice shows that by carrying out such simple actions, patients themselves can extend the service life of metal-ceramic structures by several years.

Warranty

Regulations on warranty periods and service periods for dental services.

As a general rule, warranty periods and service periods are established for work (services) to provide dental care at CityDentaMed LLC.

Warranty periods and service periods for dental services performed for each patient are established by the doctor depending on:

• Clinical situation in the patient’s oral cavity;
• The presence or absence of concomitant diseases of the patient, which directly or indirectly lead to changes in the teeth and surrounding tissues;
• The patient's complete implementation of the treatment plan recommended by the doctor.

The guarantee is issued for treatment that is considered completed:

• For caries - after placing a permanent filling;
• For prosthetics - after permanent fixation of the manufactured structure or delivery of a removable one and registration of a warranty card.

Taking into account these circumstances, in a particular case, the warranty period and service life can be adjusted (reduced or increased) compared to the average, within the time limits established by CityDentaMed LLC, which is recorded by the attending physician in the warranty card.

If a patient discovers deficiencies in the work performed (service provided) during the established warranty period and service life, the patient must contact CityDentaMed LLC by phone or in person and, stating the essence of the comment, make an appointment with the attending physician.

If the doctor determines that these shortcomings are not related to the patient’s violation of the warranty conditions or operating conditions previously communicated to him, they must be eliminated by correcting or re-performing the work (providing the service) without additional payment.

Warranty obligations are fulfilled if the Patient complies with the following requirements:

• Implementation of the entire agreed treatment plan;
• Performing adjustments or other additional intervention in the work performed (service provided) only in CityDentaMed LLC;
• Regular implementation of professional oral hygiene activities, with the frequency specified by the doctor in the outpatient card, but at least 2 times a year and only at CityDentaMed LLC

Warranty obligations are terminated (not preserved) if the following circumstances occur during the warranty period:

• The emergence of new diseases in the patient, the development of existing diseases, or the occurrence of harmful external influences that directly or indirectly lead to changes in the teeth or surrounding tissues, incl. long-term use of medications for the treatment of other diseases;
• Patient's pregnancy;
• Failure of the patient to conduct a mandatory preventive examination, carried out once every 6 months, in the case of dental prosthetics supported by dental implants - once every 3 months;
• Failure of the patient to comply with the recommendations of the attending physician for the care of the oral cavity, the result of work (service);
• Failure to comply with the operating conditions of the work result (service)

CityDentaMed LLC does not bear warranty obligations when providing dental services to the patient in the following cases:

• Treatment of teeth previously subjected to endodontic treatment is carried out;
• It is impossible to carry out or the patient refuses to carry out diagnostic, measuring, control images;
• If there is an alternative treatment option, at the request of the patient, therapeutic and preventive measures are carried out that are not the most optimal in the opinion of the attending physician in this case (destructive forms of periodontitis, the impossibility of re-treating the root canals of the tooth, etc.)
• The patient does not agree with the rational prosthetic plan proposed by the orthopedic dentist in accordance with the calculation of the periodontal endurance of the supporting teeth, taking into account research data;
• The patient has an allergy or intolerance to drugs and dental materials approved for use on the territory of the Republic of Belarus;
• A prosthesis not manufactured (purchased) by CityDentaMed LLC is installed;
• When repairing a removable denture manufactured in another medical institution or with an expired warranty;
• Treatment of the patient was stopped not on the initiative of CityDentaMed LLC;
• Complications have arisen due to the patient’s fault: failure to maintain oral hygiene, failure to comply with prescribed treatment, late reporting of complications, etc.;
• Force majeure circumstances have arisen (accident, shock, natural disaster, etc.) that could affect the results of treatment.

What is included in the guarantee?

The warranty period is the period during which the patient has the right to contact his orthopedist for free elimination of identified deficiencies in prosthetics, re-performing the work performed or part of it using materials of the same quality, free repair of the prosthesis or its replacement if the breakdown occurred from - for incorrect installation or manufacturing defects.

The patient may be denied fulfillment of warranty obligations if he did not follow the doctor’s recommendations and rules of oral hygiene, did not visit his orthopedist within the specified time frame for preventive examinations, and also tried to fix the problem on his own before contacting the doctor. Sometimes patients come to the clinic demanding warranty repairs for prostheses that have broken due to the patient’s fault.

There are also people who try to make repairs on their own and take the prosthesis to the doctor after such attempts. In both cases, the fulfillment of warranty obligations will be refused, since the doctor and the clinic are not at fault here - the orthopedist’s work was of high quality, the breakdown occurred through the fault of the patient himself.

Is there a guarantee for dental implants according to Russian law?

The guarantee is enshrined in the current legislation of Russia. The legal norm requires that the product defect be eliminated and services provided in full free of charge. Guarantees must be specified in the contract that dentistry enters into with a potential patient.

They will be provided by law subject to the following conditions:

• routine examinations with a doctor;
• strict adherence to hygiene rules;
• taking prescribed medications;
• timely treatment in case of complications.

According to the laws of the Russian Federation, it is not determined how many years the guarantee for implants is, so the clinic has the right to determine the period of free servicing.

Types of defects that the clinic must eliminate free of charge

If the work of dentists was performed with violations, then after a detailed examination they are classified into simple deficiencies and significant deficiencies. The first include minor and easily removable errors. For example, deformation of the anatomical shape of the dentures, recurrence of caries under the structure, poor marginal fit of the product, change in its color, breaking off hooks and clasps on a partial removable structure, inaccurate positioning, loss of inlays and veneers. Doctors undertake to correct such deficiencies within the time frame established by the guarantee.

A significant disadvantage is considered to be work that does not allow the patient to benefit from the results of treatment for its intended purpose. Or a very serious medical error that cannot be corrected and requires large expenses to eliminate. If such problems are discovered, the patient has the right to make demands for their elimination, even if the warranty period has expired, but only within the service life of the product - usually the period is about 10 years.

Important ! The current legislation of the Russian Federation obliges dental clinics to correct all deficiencies within the established warranty periods, and significant deficiencies - within the established service life of the prostheses.

Types of ceramic crowns

Each method of prosthetics has its own characteristics. There are several types of such crowns:

• pressed ceramics, which is produced in stages, which allows you to achieve fairly high quality without loss of aesthetics;
• zirconium dioxide crowns, which are well suited for prosthetics of chewing teeth. But it is better to restore the front teeth with metal-free material.

Pressed ceramic crowns are characterized by excellent strength and long service life. This allows the use of ceramic crowns on chewing teeth. The service life of the prosthesis is about 5–10 years. The crowns withstand various loads well, and small chips that occur during operation can be easily restored. In this case, the restored section does not differ from the rest of the structure. To install a prosthesis, minimal sharpening of your own tooth is required, which is a very positive point. The installation is not much different from the installation of metal and metal-ceramic structures. The process consists of the following stages:

• visual examination, drawing up a treatment regimen;
• preparation of the oral cavity;
• taking impressions;
• fabrication of the structure;
• fitting and fastening.

Comparative characteristics of different types of crowns

We invite you to familiarize yourself with Nylon dentures - prices, reviews, photos, production and care

Interesting

How does a metal-ceramic tooth crown work?

When choosing a material for a new tooth, you first need to understand what it is. A melloceramic crown is a metal cap on which ceramic mass is applied. In a more “advanced” version, ceramics are also applied to the area that comes into contact with the gum, preventing it from turning dark.

Indications for prosthetics with ceramic crowns on a metal base:

• Loss of one, two or more teeth in a row - due to the strength of the metal, structures of any length are possible;
• End defects of the dentition - in the absence of one or more chewing units;
• Any other situations in prosthetics that require a combination of strength, aesthetics and reasonable price.

Based on the type of material, bases for dentures are:

Ceramics for dental crowns on a metal frame also come in different types—high and low temperature. There is little difference in appearance, the price is better than the low-temperature one, and the strength is better than the one produced at high temperatures.

Comparison of metal-ceramic crowns - materials and installation

Fixation of the prosthesis is carried out in several stages:

1. Preparatory
   , when professional cleaning is performed and all foci of chronic infection are eliminated: carious cavities, periodontal disease. Next, prepare the base for the dental crown - grind the tooth if its coronal part is intact. Or they refill the canals, fixing the stump tab in them, if only the root remains. At the end, impressions are taken.
2. Laboratory
   , when, based on the impressions taken, a prosthesis is made for the period of production of a permanent one and fixed. In the meantime, the metal frame is cast, tried on, checked for fit, corrected, and color selected. Then, in the same laboratory, ceramics are applied to the frame.
3. Final
   , when the finished structure is attached to a special adhesive, for example, containing fluorine to protect fabrics from destruction.

Financial issue: cost of a metal-ceramic crown

These products are considered inexpensive. The size of the investment depends on the type of material from which the metal frame is made. What to expect in Moscow - below:

Metal-ceramic prosthetics: pros and cons

Faced with the need to restore damaged or lost teeth, we are faced with choosing not only a prosthetic technique, but also a material for making the prosthesis. It can be metal, plastic, ceramic or a combination of these. Which material is better?

What is metal ceramics?

By the word metal-ceramics we usually mean orthopedic structures - crowns and bridges made by spraying or casting ceramics onto a metal frame. Simply put, metal-ceramics on teeth is a metal base that follows the shape of the prepared tooth, covered with a thin layer of ceramics. Dental metal-ceramics is a hypoallergenic, biocompatible material, which in most cases, with rare exceptions such as allergies, is not rejected by the human body. Metal ceramics are used in dentistry mainly for prosthetics of chewing teeth, where aesthetics are not so important as function.

Prosthetics with metal-ceramics

Dental prosthetics with metal-ceramics, as mentioned above, is most typical for the chewing region, since strength is important here and appearance is not so important. However, this does not mean that dental prosthetics with metal-ceramics is not aesthetically pleasing. Metal-ceramic crowns well imitate the structure and shades of natural dental tissue. However, in the case of prosthetics for the front teeth, in which the enamel is more transparent than in the chewing teeth, the metal frame can be visible through the ceramic coating. Therefore, for prosthetics in the smile area, as a rule, solid ceramics or, in some situations, ceramics on a frame made of zirconium oxide or dioxide are used.

Metal ceramic prostheses

Metal-ceramics, from which dentures are made in modern dentistry, is a frame made of non-precious, semi-precious or precious metal onto which special dental hypoallergenic ceramics are sprayed or poured (depending on the manufacturing method). Unlike composite materials previously used for the manufacture of crowns, metal ceramics are able to reproduce the color and structure of natural dental tissue, while it does not fade or absorb dyes. A removable prosthesis made of metal-ceramics is a clasp prosthesis in which both the arch (clasp) and the frames of the crowns attached to it are made of metal. Such orthopedic structures are used when fixed prosthetics are impossible for one reason or another.

Pros and cons of metal ceramics

Many patients who decide to undergo prosthetics are concerned with the question: “Are metal-ceramics harmful?” If all manufacturing and installation standards are observed, the damage to metal ceramics itself is minimized and practically eliminated. Modern materials for the manufacture of metal-ceramic crowns do not contain any toxins. However, it is worth remembering that different types of metal ceramics may behave differently in the oral cavity. Thus, in the case of chromium-nickel alloys in the crown frame, allergies to nickel are common, and some base metals can oxidize over time under the influence of saliva. Among the advantages of metal-ceramics are high strength and long service life, and the disadvantages of metal-ceramics are the possibility of exposing the metal frame when the gums recede (an exception would be crowns made of zirconium dioxide), the transmission of the frame through the ceramics and the need for rather strong grinding of living tooth tissues under the crown, up to depulpation of a living tooth without direct indications.

Strength of cermets

Currently, metal-ceramic dentures, both single and bridge-like, are in most cases used on teeth that have a significant chewing load. Although until recently they were the undoubted leader, regardless of what types of dental prosthetics were used. Ceramic crowns, on the contrary, were not popular for a long time due to the increased fragility of the structure and therefore were used only for prosthetics of the frontal group of teeth. However, with the advent of frameworks made of zirconium dioxide or aluminum dioxide, more and more dentists and patients prefer these modern materials for prosthetics of both chewing and, in some cases, anterior teeth.

It is worth noting that the excellent strength of metal-ceramic prosthetics can negatively affect the surface of the teeth intersecting with them and lead to their excessive abrasion. At the same time, prostheses made of metal-free ceramics have a hardness coefficient close to that of natural teeth, which makes it possible not to injure opposing teeth.

Allergy to metal ceramics

The ceramics used to make crowns are absolutely hypoallergenic, but the metals used in the frame can in rare cases cause an allergic reaction. Symptoms of an allergy to metal ceramics are a burning sensation in the mouth, in the area of ​​​​both the gums and the tongue, a metal bite, swelling of the gums in the area of ​​​​contact with the crown and swelling. If, after installing a metal-ceramic crown, the phenomena described above are observed, you should consult a doctor. In such cases, it is recommended to replace the metal-ceramic with an all-ceramic crown.

Service life of cermets

One of the saddest misconceptions of patients is that a metal-ceramic crown does not require replacement and will last the rest of its life. Unfortunately, this is not the case, and the service life of cermets is limited. On average, a metal-ceramic denture can last 10–12 years if the frame is made of an alloy of base metals, and 15 years or more if a gold-platinum alloy is used. However, it is worth considering that the prosthesis must be made strictly according to individual casts, and the patient, when wearing such a fixed or partially removable structure, must follow all care recommendations. The warranty on metal-ceramics lasts on average from one to three years, depending on the material used to make the frame. At the same time, the warranty conditions imply that the crown will maintain its integrity and will not be destroyed by mechanical stress within a specified period, while the most common cause of crown loss is secondary caries that develops at the junction of the tooth and the crown. In order to avoid such situations, it is necessary to regularly undergo preventive examinations and promptly replace old orthopedic structures with new ones. Remember: metal ceramics on teeth have a service life, failure to comply with which can lead to tooth loss.

Metal ceramic color

The ceramics used to make metal-ceramic crowns allows you to imitate the color and structure of natural enamel, making the prosthetic tooth as similar as possible to the patient’s neighboring, natural teeth. The color of metal-ceramics is selected according to the Vita scale; it does not fade or change over time, since, unlike natural enamel and composite materials (for example, fillings), ceramics do not absorb coloring substances from food and drinks, so bleaching of metal-ceramics is not required. If you think it’s time to whiten the metal ceramics installed in your mouth, most likely you need to visit a hygienist to remove stained plaque.

Metal ceramics or ceramics?

If you decide to resort to dental prosthetics using crowns or bridges, then sooner or later you will face the question: “Which is better - ceramics or metal-ceramics?” What is the difference? Metal ceramics and metal-free ceramics differ in their aesthetic and functional properties. Metal-ceramic dentures are more durable, but have significant aesthetic disadvantages, which play a big role in restoring teeth in the smile area. Therefore, for prosthetics of the anterior dentition, orthopedic structures made of solid ceramics will be the preferred option. However, it is worth considering that most ceramic dentures are very expensive. In the case when chewing teeth are restored, metal ceramics are quite acceptable, since its aesthetic defects are invisible in the lateral sections. Metal-ceramics or metal-plastic?

Modern dentistry offers many different options for making crowns, the main difference being the materials used to make the frame and the anatomical shape of the tooth. Some materials are more expensive, others are cheaper, but the quality of crowns, as you might guess, directly depends on the price, since the most durable and aesthetic designs are made from more expensive materials. To the question: “Which is better – metal-ceramics or metal-plastic?” The answer is clear, of course, metal ceramics. Despite the fact that modern dental plastic is of decent quality and hypoallergenic and, just like ceramics, is able to imitate the natural color of teeth, it still loses in many respects, so the choice - metal-plastic or metal-ceramics - is decided in favor of the latter. Plastic is inferior to ceramics both in strength and in its ability to imitate natural enamel. Therefore, plastic in modern dentistry is used exclusively for the manufacture of temporary crowns, those that the patient wears while permanent structures are made in the dental laboratory or while the implant is healing. Making permanent crowns from plastic, and even on a metal frame, is absolutely unprofitable, the service life of metal and plastic is different, and their connection is not justified.

Ceramic or metal?

Also today, all-metal crowns are available to patients, but this is the most unaesthetic type of orthopedic structures, which, unlike metal-ceramics and ceramics, are in principle unable to imitate a natural tooth in anything other than anatomical shape. However, metal crowns are noticeably cheaper than metal-ceramics, but inferior to it in most respects. In addition, metal structures can cause increased wear of the teeth with which they come into contact.

Metal ceramics or zirconium?

We have already discussed above how metal-ceramics differs from ceramic-coated zirconium. If you are faced with a choice: zirconium dioxide or metal-ceramics, then in the case of prosthetics of the front teeth, the advantage, of course, is on the side of ceramic crowns on a zirconium frame. As for the teeth in the chewing zone, zirconium oxide or metal-ceramics is not so important; they are not inferior to each other in strength, and the aesthetic side in the lateral section is not as important as the functional one.

Metal ceramics on gold

As we have already said, in metal-ceramic crowns the frame can be made of various metals and alloys. However, the most popular are cermets based on a gold alloy, which can also include platinum and palladium, but gold still predominates in percentage terms. Metal ceramics on gold are preferable to other types of structures due to the fact that gold is not oxidized by saliva and is one of the most biocompatible metals, that is, it is not rejected by the body.

How to install metal ceramics

So, if you decide to install metal-ceramics, you first need to undergo diagnostics and prepare the supporting teeth. After this, the orthopedic doctor will be able to take impressions from the ground teeth, necessary for the manufacture of individual structures, and after some time, insert metal-ceramics. It is worth remembering that turning for metal-ceramic crowns requires more thorough turning than for all-ceramic crowns; this is due to the minimum permissible width of the walls of metal-ceramic crowns, which is larger than for ceramic ones. As a rule, preparing teeth for prosthetics is accompanied by their depulpation (removal of the nerve) and treatment of the dental canals. But this doesn't always happen. In some cases, when the supporting teeth are in satisfactory condition, they are left alive. Typically, metal-ceramics are installed on a tooth with a shoulder. This means that the orthopedist, when grinding the dental tissues, forms a circular ledge along the lower edge, which avoids contact of the metal frame with the gum, and this minimizes the risk of swelling, irritation, bleeding and allergies. How to care for metal ceramics?

Daily oral hygiene after installation of metal ceramics is no different from usual. Caring for metal ceramics involves brushing your teeth in the morning and evening, and, if possible, after each meal. In this case, it is necessary to follow the cleaning rules: the sweeping movements of the brush should be directed from the gums to the cutting edge; the care of metal-ceramic teeth should be completed with dental floss, and ideally, treatment with an irrigator. If you are interested in the question of how to clean metal ceramics, then everything is simple: with the same thing you use to clean your own teeth, that is, with a soft brush that does not harm your gums, and a paste that your dentist will help you choose based on your individual characteristics of the oral cavity. If during cleaning or at any other time you feel that your teeth hurt under metal-ceramics, immediately contact your dentist; secondary caries may have developed under the crown, or the carious cavity was not treated thoroughly enough.

Very often, people who have metal-ceramic crowns in the oral cavity are concerned with the question: how do MRI and metal-ceramics compare? We hasten to reassure you: metal-ceramic crowns do not deform or move under the influence of a magnetic resonance imaging scanner, however, they can provoke an image defect in the image, so always warn the doctor who prescribes an MRI about the presence of metal-ceramics.

Situations are different, and sometimes restoration of metal ceramics is required. This occurs when the crown is mechanically damaged. If metal ceramics break off in your mouth, the orthopedist will first of all assess the extent of the problem - how large a piece was broken off. And here he is primarily interested in whether the metal frame is exposed or not. The fact is that restoring a minor chip of metal-ceramics is quite possible, including using composite materials. At the same time, restoring metal ceramics in the oral cavity when the frame is exposed is, in most cases, no longer possible. In such a situation, it will most likely be necessary to remove the cermets and install new structures. Also, do not forget that timely replacement of metal-ceramics will help to avoid unforeseen problems, such as falling out crowns or their splitting.

The best metal ceramics

The question “Which metal-ceramics is better?” must be decided based on the service life and strength of structures based on various metals. In this case, the best cermet is, perhaps, the one that is made on a frame made of gold-platinum alloy. Such structures last up to 15 years. As an alternative to metal-ceramics, we can offer crowns made of zirconium dioxide, which have an even longer service life - 20 years.

General warranty periods

It is worth saying that each clinic sets warranty periods independently, and they are always specified in the contract that the patient signs for the provision of services. You should carefully study the clauses regarding the guarantee - some dentists provide guarantees of up to two years, and some - no more than six months. Typically, a warranty is issued for a shorter period for veneers, as well as for permanent structures made of plastic.

If the patient has tooth mobility, as well as periodontal disease or periodontitis, then the warranty period is seriously reduced and is established by the dentist himself. That is why it is strongly recommended to first get rid of all these diseases, and only then install prostheses.

If the patient persistently requests prosthetics with a certain scheme, despite the presence of relative contraindications, then the warranty period can be reduced to one month. Moreover, all design changes in the future are carried out at the expense of the patient.

Also, the warranty on the prosthesis ceases to apply if the patient overstays his or her follow-up visit to the dentist for several months to monitor the condition of the prosthesis.

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