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There are various problems with teeth. The person has lost his teeth, allowed the sides to fragment, the caries has practically eaten the tooth to the roots - no matter what happens. After all, a person becomes a good patient and we become the clinic who restores the patient's teeth according to the latest science and technology.
Dental crowns and dentures are made out of anything. Human and animal teeth, ivory, various metals are used, including precious stones, hard tree trunks, modern ingredients. All these materials have their drawbacks. As a result, dentists around the world are looking for new types of materials that can benefit them in dental prosthetics.
What material is used to make modern crowns?
Until recently, metal ceramics were the most widely used - porcelain on a metal frame. At present, both the porcelain itself and the frame are being replaced by zirconium ceramics.
Zirconium dioxide - a stable material, a type of ceramic that differs in high mechanical strength and abrasion resistance. It has an attractive appearance, a natural white color. It also lightly tones the color of the gums. The specific gravity of zirconium ceramics is several times lower than that of porcelain. In terms of thermal conductivity, zirconium oxide leaves porcelain far behind. Zirconium teeth placed on crowns do not feel hot or cold. In general, it is a fairy tale, not material.
Thus, a light, strong, abrasion-resistant material that is practically undamaged by fragmentation. It can be used to make crowns, spacers and other products related to the restoration of a patient's teeth in exactly 24 hours.
Zirconium ceramics do not require additional reinforcement with metal, but the manufacturing accuracy of the product is 30-40 microns - five times less than metal ceramics. This is simply a huge advantage - the crown can be mounted on a polished tooth, an implant, a pin made of one or another ceramic, practically without the use of cement.
However, this does not end with the advantages of zirconium ceramics. Zirconium oxide, unlike metals, is a biocompatible material. It takes root much better and is less rejected by the body. Therefore, it is increasingly used in dentistry as a whole and in implantology in particular. The service life of oxide zirconium products ranges from 15 to 25 years, which is considerably longer than the standard 10 years for cermets.
How modern crowns are made
The specialists of the implant treatment clinic selected the best zirconium ceramics available on the market for their patients - Katana Kuraray, which is delivered directly from Japan. The process of making crowns and bridges takes place as follows.
The first stage - consultation. Preparatory activities, the volume of work and their sequence and cost are discussed.
In the second stage, the doctor switches to practical realization - treatment, if the teeth need it, then preparation of the oral cavity for the installation of zirconium ceramics. The doctor takes two impressions of the patient's tooth.
The third stage - preparation. The laboratory specialist processes the taken impressions using a special program, a 3D model of the product is built on a computer and given into production. The implant treatment clinic has a three-dimensional milling machine and a special oven, which allow prostheses, crowns, implants to be made in just one day, toned according to the “natural” color of the gum - thus avoiding temporary crowns, shortening treatment time and reducing patient costs.
Finally, in the fourth step, the zirconia products are installed on the prepared teeth and fixed with dental cement. All 5 steps take one to two days - hence the reactive speed. A small final fit, bite testing - and a flawless smile is ready.
It is worth noting that the article only describes the general stages of a large network. Each case is individual and requires a personal treatment plan, which can be significantly more complex and time consuming, but most prosthetic surgeries are performed with short deadlines.
Why choose zirconia crowns
Certainly one of the biggest advantages: crowns made of zirconium ceramics are much more progressive than other materials available until then. However, another advantage of zirconia crown is that they are practically not visible on the teeth. With the naked eye, it is impossible to see the difference between the patient's teeth and the crown. Unfortunately, cermets have a characteristic black border. In addition, over time, some cermet crowns will "glow" on a dark base.
As for the shortcomings of zirconium oxide. The only restriction is - the price. This can exceed the cost of similar cermets by up to one and a half times. But the service life of cermets is - 10 years, while that of zirconia is 20 to 25 years with proper care. Simple arithmetic shows that zirconium ceramics are cheaper in the long run.
Conclusion
Installing cermet crowns in modern conditions - a strange act. There is zirconia, which is mainly characterized by only advantages and has practically no disadvantages. Therefore, choose the best solution for you, visit the dentist twice a year and be healthy!