Precious metal porcelain teeth

Speaking of porcelain teeth, many people will be familiar with it, especially for dental patients. Generally, the teeth are so bad that they cannot be repaired with filling materials. , or in cases of tooth loss or dental cosmetics, dentists will recommend to patients that "your teeth can be repaired with porcelain teeth." Porcelain teeth are loved by everyone. Porcelain teeth have been accepted by more and more people. They not only bring people the same chewing effect as real teeth, but also are "comparable to real teeth" in appearance. ” can even change your unsightly teeth. You are familiar with porcelain teeth, but most patients may know little about its types.

According to the director of the dental department of Shenzhen Shi Boai Hospital, the types of porcelain teeth are mainly divided into two categories, one is metal-ceramic teeth, and the other is all-ceramic teeth, and metal-ceramic teeth can be They are divided into ordinary metal porcelain teeth, titanium alloy porcelain teeth, precious metal porcelain teeth, etc.; all-ceramic teeth are further divided into cast porcelain teeth and computer all-ceramic teeth. In the past, ordinary metal porcelain teeth were mostly used in our country because they were relatively cheap and easily accepted by most people. All-ceramic teeth were relatively expensive and were considered "aristocratic" porcelain teeth, which could not serve more teeth. Patient services. Therefore, the currently more economical and affordable ones should be titanium alloy porcelain teeth and precious metal porcelain teeth.

Titanium alloy porcelain teeth

The full English name of titanium alloy is "TILITE" (Titanium Wright), a titanium-containing medical alloy. It is the only titanium alloy that has passed the F·D·A (U.S. Food and Drug Administration) Titanium-containing medical alloy strictly inspected by the Administration) to ensure good affinity to the human body; the best quality control has obtained CE trademark ISO9002 and A·D·A certification; its performance is similar to the requirements of surgical artificial bones and artificial heart valves, which can avoid Symptoms such as bleeding gums and black gums. The excellent bonding strength of porcelain teeth and super metal strength can extend the service life of porcelain teeth; the special characteristics of solid titanium alloy and precious metals are also used by many patients. Wu Heng, a dental expert from Boai, a new choice for laser computerized all-ceramic teeth, said that German laser computerized all-ceramic dental technology is an all-ceramic leader that surpasses cast porcelain technology and computer CAD/CAM technology. It can customize the dental model according to the patient's individual condition. After the data is sorted and processed, the shape of the tooth is simulated, and a computer is used to design the virtual optimal crown shape. Through layered stacking technology, high-strength aluminum oxide is used to stack the inner layer of the crown in layers, that is, the inner crown. . All-ceramic teeth have excellent simulated appearance and biocompatibility. Their transparency is far greater than that of ordinary porcelain teeth. They will not cause adverse reactions to the gums, and the repair effect is perfect and natural.

Porcelain teeth are currently the dental restorations with the best adhesion and the most realistic color effect. The so-called porcelain teeth mainly refer to metal porcelain crowns, which are an ideal restoration.

Porcelain teeth, the full name of porcelain fused-to-metal restoration, is a restoration made by melting and bonding ceramic powder to a specially treated metal surface under vacuum conditions with the help of high temperature. body. Its aesthetics and biocompatibility cannot be replaced by other restorations, and it is by far the most ideal restoration.

At the end of the 18th century, ceramics were already being used for dental restorations. By the 1950s, significant progress had been made in the development and improvement of metals and ceramics for porcelain. By the 1990s, porcelain tooth restoration had been widely carried out in major cities in my country. However, due to the materials (metal, ceramics) used Powder), design, and production require high accuracy in all aspects, and the quality of porcelain teeth on the market varies.

1. What are the advantages of porcelain teeth (referring to precision-made porcelain teeth)

1. Good edge sealing. Some friends may have experienced this kind of pain: a tooth that is not very good or has some missing parts feels stinky or painful about ten years after being covered with steel or gold teeth. This is because there is not enough space between the false crown and the real teeth. If they are tightly sealed, saliva and food residue will penetrate into them, and the real teeth will gradually corrode, resulting in the dentures becoming smelly, loosening and falling off. This is the result of poor sealing of the edges of the dentures. The production of porcelain teeth requires edge fit. A special non-water-soluble bonding material is added 1mm below the gums to ensure edge sealing.

2. Beautiful. The color can be adjusted to the same color as real teeth, which will never change color. The color of all-ceramic teeth is more ideal, and the refractive properties are the same as real teeth (titanium, gold, platinum).

3. Good biocompatibility. In particular, porcelain teeth and all-ceramic teeth made of biological precious metals are corrosion-resistant due to their electrical and chemical inertness, and their tissues are non-allergic. However, if ordinary stainless steel porcelain teeth are worn for a period of time, a dark gray edge will be visible at the gingival margin. .

4. Extremely high intensity. After the gold tips and ceramic powder are melted and combined at high temperatures, they are strong enough to withstand the chewing force in the mouth, and the bonding force between precious metals and ceramic teeth is even stronger.

5. Protect the hard tissue and pulp of the tooth, because the teeth that need porcelain teeth are often discolored and decayed. After the porcelain crown is made, the entire real tooth will be surrounded by gold. In the middle, the force of chewing acts on the crown, which will not break or collapse. The adhesive and porcelain layer used to bond the porcelain crown have good insulation, preventing damage to the dental pulp from external stimuli.

2. The components of porcelain crowns: gold inner crown, color-shielding porcelain, dentin porcelain, and enamel porcelain.

3. What are the factors that affect the quality of porcelain teeth?

1. Craftsmanship. Clinically, we often see the same German porcelain powder. Some of the porcelain teeth made have beautiful shapes, true colors, wear resistance, and no chipping of porcelain. The opposite situation also occurs.

A good quality porcelain tooth, in addition to high-quality porcelain powder and metal, is closely related to the entire porcelain tooth processing and manufacturing process: reasonable design of the gold crown, porcelain powder preheating temperature, heating rate, Strict operating procedures must be followed for final firing temperature and holding time, as well as vacuuming.

2. Clinical design and operation

It does not mean creating a beautiful appearance. Even if it is a perfect restoration, porcelain teeth must be suitable for the physiology of empty mouth and chewing. After long-term wear, No adverse reactions, no chipping. This requires clinicians to perform scientific and reasonable operations, and it is more important to determine the number of teeth, edge positions, pulp treatment, and disinfection and bonding requirements.

IV. Indications of porcelain teeth

Tooth fractures, defects, dentition defects (missing teeth), malformed teeth that are not suitable for correction, uneven dentition, and discoloration of crowns , dead pulp teeth, tetracycline teeth, fixed restorations for dentition defects, large-area vertically filled teeth, abutment teeth with bolt fixation, etc.

Introduction to porcelain teeth

1. Indications of metal porcelain teeth for repairing partially damaged teeth

Metal porcelain teeth (PFM) have greater Advantages, its indications:

1) Those with large dental defects caused by caries or trauma that cannot be filled;

2) The front teeth are misaligned or twisted, which is unsuitable or impossible. Orthodontic treatment;

3) Fluorosis, discolored teeth, tetracycline teeth, etc. are not suitable for repair by other methods or the patient requires permanent repair.

Contraindications of metal porcelain tooth restoration:

1) Teenagers whose permanent teeth have not yet fully developed and the pulp cavity is wide;

2) The tooth body is too old The patient cannot obtain sufficient retention and resistance; the patient has severe overbite and tight bite, and cannot prepare enough space without correction.

2. Indications of metal porcelain tooth restoration with core post crown and metal porcelain teeth with large-area tooth defects

For those with serious tooth defects who cannot directly repair metal porcelain teeth, you may consider making metal porcelain teeth. Core post crown - metal porcelain dental restoration, its indications are as follows:

1) Most of the defects in the crown cannot be filled and treated or the full crown repair has poor retention;

2) The crown is defective to the subgingival level, the periodontal health is healthy, the tooth root is of sufficient length, and the defective surface can be exposed after gingivectomy;

3) Transverse crown fracture of the anterior teeth;

4) The front teeth are misaligned teeth, discolored teeth, and deformed teeth.

3. Dental defect repair and root canal treatment

The prerequisite for the repair of porcelain teeth and porcelain core posts and crowns is that the patient's abutment teeth must be healthy so that they can be repaired the foundation.

Vital pulp teeth (teeth with nerves) are ideal abutment teeth, while dead pulp teeth (teeth without nerves) must undergo relatively complete root canal treatment, and there should be no inflammation in the gums and periapical areas. Or only when the inflammation has been controlled, there is no bone absorption or the bone absorption does not exceed 1/3 of the root length and the bone absorption has stabilized, can the restoration be considered.

Porcelain teeth for beautiful teeth

The beauty of teeth is an important issue in beauty. Just think about how beautiful your facial features and skin are. It would be strange if you open your mouth and have jagged yellow and black teeth.

However, now people are paying more and more attention to the beauty and health care of their teeth. Just look at those dental hospitals and dental centers and you will see that the number of people going there for teeth cleaning, fillings, orthodontics, etc. continues to increase. People’s awareness of beautiful teeth and mouth care is getting stronger and stronger.

There are many ways to beautify your teeth and protect your teeth, among which porcelain teeth are newer and more widely used.

Porcelain teeth are a type of dentures. They are made of low-soluble porcelain powder similar to natural teeth and melted in a vacuum high-temperature porcelain furnace. The prepared full porcelain tooth surface crown is cemented onto the modified real teeth. It will have the same comfortable, wear-resistant and stable characteristics and functions as real teeth. And since bacteria cannot survive on the surface of porcelain teeth, tooth decay will not occur, which is why it is superior to real teeth.

At present, there are several types of porcelain teeth, including all-ceramic ones and porcelain teeth fused with metal. Metals are divided into general metals and precious metals. The precious metal is gold. Because gold has a good affinity with gums, and the combination of gold and porcelain powder closely resembles the color of real teeth, it can better achieve the practical functions and cosmetic effects of porcelain teeth. Therefore, gold porcelain teeth are called one of the nobles among porcelain teeth. But relatively speaking, gold porcelain teeth are the most expensive, only costing about 1,300 yuan each, while ordinary metal porcelain teeth cost about 300-400 yuan each, and the price of all-ceramic teeth is somewhere in between.

So, under what circumstances should you choose porcelain teeth? Porcelain teeth have a certain range of adaptability, and the following are some of them:

Filling of missing, broken, or rotten teeth: If the tooth defect is large, general repairs are often easy to fall off and discolor, so a full crown is required. Porcelain can avoid these situations.

Correction of excessively wide tooth gaps and misalignment of individual teeth: Porcelain crowns can be repaired quickly, and are cheaper and faster than wearing braces.

Repair discolored teeth: Some people have unsightly tetracycline teeth, yellow and black teeth, and porcelain crowns can change this situation.

Fixing loose teeth: Using joint porcelain crowns, loose teeth can be fixed next to stable teeth.

However, in some cases, patients cannot choose porcelain teeth, such as too many tooth defects, insufficient retention, loose teeth, severe periodontal disease, oral tissue lesions, and maxillofacial diseases. Severe facial defects, temporomandibular dysfunction, etc. In short, you must be examined by a specialist before you can decide whether you are suitable for porcelain teeth.

In addition, it is best for patients to go to a dental hospital or dental center with advanced equipment and high technical level to avoid old diseases lingering and new diseases appearing again.

Instructions for using metal-ceramic restorations (porcelain teeth)

Porcelain-fused metal restorations are also called metal-ceramic restorations, commonly known as porcelain teeth, and are the most commonly used For fixed denture repair. It first makes a metal cap as a substrate (i.e., metal base) on the dental model, and then sinters dental special porcelain on the metal base under vacuum and high temperature conditions to form a gold-porcelain composite structure restoration. It combines the strength of metal with the beauty of porcelain.

Advantages of porcelain teeth

1. Beautiful porcelain has good coloring performance, high surface finish, transparency and translucency, and can restore the natural color and texture of the tooth tissue. , its aesthetics are the best among all oral restoration materials.

2. High mechanical properties: The compressive strength of porcelain is very high, and its hardness and wear resistance are close to those of tooth enamel.

3. Good biological properties: Porcelain has excellent biocompatibility, can be implanted in the body or used safely in the mouth, and has no sensitization or teratogenic effects.

4. Stable chemical properties. Porcelain has the most stable chemical properties among oral restoration materials and can withstand the effects of many chemical substances without changing. Being in the oral environment for a long time, it will not deteriorate or denature due to the effects of various foods, drinks, saliva, body fluids, microorganisms and enzymes.

Disadvantages of porcelain teeth

Porcelain has poor impact resistance. Under the action of sudden external force (the contact time is short, but the force is not necessarily very large), porcelain teeth sometimes appear. Layers crack.

Treatment of chipped porcelain

1. Use adhesive and composite materials to directly repair the mouth.

2. Re-make porcelain teeth extraorally.

Precautions for using porcelain teeth

1. Develop good chewing habits of chewing carefully and slowly, and avoid suddenly biting and cutting things violently to prevent porcelain from collapsing.

2. Do not bite hard foods such as walnuts, pine nuts, etc. to prevent damage to the restoration.

3. Regular oral examinations and periodontal scaling (at least once a year) to prevent periodontal disease. occur.

4. If you have any questions, please consult or see a doctor at any time.