Zirconia is wear-resistant, high-density, high-hardness, no pores, dirtless, non-metallic casting, does not rust, no metallic odor residue in cutting food, thin and sharp, and has many characteristics that metal knives do not have. It’s The Mohs scale of mineral hardness also reaches 9.
Not only is it suitable for cutting tools, but in terms of material durability and stability, zirconia is considered to be the most beautiful, durable, and stable dental crown material.
In the 1970s, the well-known German VITA company invented the In-Ceram technology. The strength of full ceramic crowns was greatly improved, and they were soon applied in clinics. The realistic aesthetic effects of full ceramic crowns shocked dentists, even dentists. It is difficult to tell which one is a false tooth. With the development of material science and computer technology, CAD-CAM technology (computer-aided design, laser scanning, and grinding production controlled by computer programs) has been applied to the production of dentures. Among them, zirconium dioxide computerized full ceramic crowns are the most successful products.
Zirconia (aka full ceramic crown) is a kind of porcelain tooth. Because its internal structural material is zirconia ceramic, it is called full zirconia crown.
Full zirconia crown is the strongest type of dental restoration, so it is not easy to be chipped when repairing teeth. Secondly, it can be used for beauty and restoration of missing teeth. It can repair multiple teeth. That is, it can be used for continuous crown restoration.
The Loyal Beauty dental lab full zirconia crowns are all made with computer CAD-CAM technology, that is, laser scanning, computer-aided design, and three-dimensional CNC professional machine tools to process suitable crowns or bridges.
The characteristics of zirconia crown
- The color is very similar to that of natural teeth, with a high degree of aesthetic effect, excellent light transmission, and more suitable for use in areas with high aesthetic requirements.
- There is no metal odor in the mouth, no corrosion, no irritation of the dental pulp nerve due to the alternation of cold and heat, excellent bio-compatibility, and durability. It can withstand the strong bite force, prevent breakage, and is strong and durable. It solves the problem of transparent blue, black line,s and discoloration of metal porcelain gums.
- The non-metallic zirconia does not block X-rays during the nuclear magnetic resonance inspection, and there is no need to remove the dentures during the nuclear magnetic resonance inspection, which saves a lot of trouble.
Questions and answers
Q1: Why does the dentist want you to make full zirconium dioxide crown?
For such a long time, porcelain crown has been a fast and effective way to restore teeth, but the metal ions of metal crown can produce adverse reactions to the human body, such as darkening of the gums, bleeding and shrinking of the gums…Due to metal interior of the inner crown, the light transmittance, color and shape are quite different from the natural tooth, and it will produce a blue-gray effect under the light.
At the same time, metal crown are unstable under the action of bacteria in the acid-base environment of the liquid oral cavity. There is a certain amount of interference from metal when patients undergo CT MRI. Therefore, the dental medical community has been working hard to change this state. This is the latest porcelain tooth with no metal inner crown—Full Zirconium Oxide Crown .
Q2: Is zirconia safe?
The zirconia used in medical and dentistry has an excellent performance in terms of biological safety. Over the years, a large number of experiments and clinical cases have proved that zirconia has no toxic damage to bone and soft tissue cells. There are no reports of allergic reactions.
- The patient is worried about whether zirconia is radioactive. In fact, zircon derived from zirconia needs to go through multiple steps such as purification and powder processing. The processing will remove all impurities. The FDA standards are strict for all-ceramic materials on the market, and they can be used as medical materials only after they meet the requirements of radiological experiments. And there are not only requirements for zirconia, but also for decorative ceramics, alumina, glass ceramics, etc., the same radioactive qualification requirements. Experiments show that the radioactivity of pure zirconia powder is not only lower than that of glass-ceramics but even lower than that of human bone tissue.
- Zirconia is sometimes mistaken for metal. This is to confuse the chemical concepts of metal elements and metals. Zirconia is not zirconium metal or zircon. Although it contains metal elements, it is oxide ceramics. This is like the difference between sodium chloride (the chemical composition of table salt) and metallic sodium.
Q3: Will full zirconia crown cause excessive wear on the jaws?
For some patients with tight occlusion and insufficient tooth preparation space, full zirconia restoration is a good choice. If you are worried about excessive abrasion of the jaw teeth, it is not necessary, because the abrasion performance of zirconia depends on the smooth surface Degree, not hardness. Therefore, the full zirconia restoration will not cause excessive wear on the jaw teeth after polishing or glazing. Please submit it to a technician for glazing or polishing by yourself after grinding.
Q4: How long is the life of the zirconia crown?
The skill of the doctor is the most important factor in determining the quality of the crown. If the doctor is relatively high-level and serious and responsible, the crown will definitely last longer. So be sure to find a skilled doctor to do it, try to make the veneer or ceramic crown material and the tooth close together.
In addition to the doctor, the following points also determine the lifespan of the crown:
1. The condition of the tooth itself
Generally speaking, if the tooth itself is thick and long, it will take longer to use after the porcelain is made; if it is an inlay, the more missing teeth, the shorter the use time.
There is definitely a difference between using porcelain to eat cakes and using it to eat ribs every day. The worst taboo of porcelain crowns is to bite on hard things.
3. Selected materials
When other conditions are the same, of course, the selected material can be used longer. Generally speaking, expensive materials are better, have better adhesion, and have less irritation to the gums.
4. Daily care
Porcelain crowns needs regular care. If you do not brush your teeth well and do not use dental floss every day, your teeth will become looser and fall out more easily.