The patient, who first learned about this service, many questions. Most often, the dentist asked questions: - What distinguishes this crown from the already familiar metal-or photopolymeric fillings? Why tabs expensive than fillings? What made the tabs and nonmetal crowns? What is the life of a crown? These and many other questions, I am happy to answer in this article. And so, what is the all-ceramic crowns? Even the title becomes clear that this construction is entirely made of ceramics. This is the main difference from the metal-ceramic crowns, which basically has a metal frame. No metal frame makes the crown more easily. Due to this, much faster the process of accustoming the patient to the new design. Ceramic crown is practically not felt in the mouth. It feels like home healthy tooth. Another advantage of the absence of the metal framework is that ceramics, which is used in the manufacture of all ceramic crowns, closely follows the physical parameters of tooth enamel. Another disadvantage of metal-ceramic crown is its excessive hardness. A tooth is resilient. This causes the sort of depreciation when chewing food. Ceramic crown has the same elasticity as the enamel of healthy teeth. For the patient this translates into comfortable feeling during meals. Pottery is applied in layers. Each layer has a different density and the ability to absorb and refract light. With this manufacturing method, crowns perfect harmony with the neighboring healthy teeth and under the natural and artificial lighting. Ceramic tab - it mikrovstavki the cavity, characterized by the highest aesthetics and durability, identical healthy enamel. Speaking of ceramic tabs to clearly identify the benefits that distinguish this type of prosthetic restoration of the well-known through the composite and the indications for its manufacture. Absolutely all parameters ceramic tab than any other restoration of the most 'advanced' fillings. Low-temperature ceramics, which are made from the tabs have the same elasticity as a healthy enamel and, as mentioned above, is erased during operation simultaneously with the natural enamel, which is especially important if you stay in front of a healthy tooth. Separately, it should be noted the perfect aesthetic appearance of teeth restored with ceramic tab, looking at who is not only you, but sometimes the dentist is unable to detect the restoration, for simulating a tab, a technician, as opposed to a doctor, is restoring a tooth filling material, is not limited to space, he does not interfere with the language, cheek, saliva. A plaster model exactly to copy the situation in the oral cavity, the technician can rotate in front of him as anything, he sees a tooth on all sides, and a guarantee of complete harmonious integration of future restoration in the oral cavity. Technician thoroughly acquainted with the basic principles odontoglifiki, recreates all the fine details inherent in a healthy tooth. Special paint, imitating the natural coloration of plaque gives a peculiar individual charm of each tooth. If the tooth is destroyed by more than 1 / 3, and especially if retained its vitality, it is direct evidence for the construction tab. As for the manufacture of seals, first remove all the damaged tissue, then removed mold, which is sent to our laboratory. At that time, until the work is produced in the laboratory, the cavity in the tooth is sealed with a special time stamp, designed specifically for these purposes. Before fixing the tab it as a single block is removed from the cavity without leaving fingerprints, and no corking dentinal tubules that can not be said about traditional temporary seals used everywhere. A major shortcoming of any composite filling materials, both chemical and light-cured is the so-called polymerization shrinkage. At the time of hardening filling material as it shrinks, the percentage decreases in the volume of a micron, but it is enough for the formation of micro-prstranstva between filling and tooth, where she almost certainly is formed secondary caries. Ceramic tabs are deprived of such a shortage, because made in the laboratory and subsequently recorded in a special dual-curing cement, which chemically binds to the surface of ceramics as well as on enamel and dentin.