Seal— Is an artificial restoration, replacement tooth defect.
Svetokompozity, which are one of the most popular to date technology caries, for all its positive qualities are three major drawbacks: the shrinkage during cure (or svetootverdenii), the emergence of internal deformation, which resulted in the break off thin wall seal; lack of polymerization (or hardening ) fillings. That is why they can not be used for large defects teeth. In such a situation is an optimal use of the tabs.
Inset— Is, not surprisingly, is also seal, manufactured not only the patient's mouth, and in the laboratory. Even tab of conventional composite filling material is devoid of the above-described drawbacks of the seal made in the mouth. Speaking of ceramic tab, then it is generally much greater than any other in their properties.
The fact that all of the materials used in dental ceramics is closest to the properties (strength, color, light reflectance, etc.) to the tooth enamel. Porcelain bonded to the tooth inset almost completely recovers its strength. Therefore, where there are large tooth decay, it is preferable to put the tab, not the seal. In many cases, when the destruction of the tooth crown is large, andtooth while alive, the only thing that prevents depulpirovaniya and covering of the tooth crown — this tab.
The impetus for the development of this technology will improve the mechanism of bonding (or adhesion) the seal to the tooth. If the seals were held earlier in the cavity due to its geometry, but now doctors began to create microscopic irregularities in the enamel, which flows into the glue that connects the seal of the tooth.
Today, dental adhesives (referred to as adhesive systems) of the fourth and fifth generations of the micropores penetrate all layers and tooth enamel and dentin. Permeating all the microscopic irregularities of which a great many, glue (adhesive) creates a bond with the tooth fillings that in the experiment in trying to tear the seal, it comes off with a portion of the tooth. The result of this establishment dental chudokleev (adhesives), it is possible to stick to the tooth not only composite fillings, but also porcelain and metal, and many other materials.
The procedure for creating tabs
So how are made, for example, ceramic tab? First doctor under anesthesia deletes whole cavities and forms a cavity under the tab. Further removed from the mold of the teeth in both jaws. By the way, this process has changed over the years. Modern impression material is very soft and delicious smell — a minimum of discomfort. Casts doctor sends to the lab.
By dental casts made from plaster casts model. The model is part of the technique restores the lost tooth with the ceramics, causing its thin layers with a brush and periodically burning in a special oven at a temperature above 700 degrees under vacuum. Then finished the tab carefully polished and on the model passed the doctor's office.
Subsequent patient visit a doctor tries tab evaluates its color, shape, and contact with neighboring teeth, whereupon it adheres to the tooth with an adhesive (adhesive) and the special composite cement. He then removes the excess cement and checks to prevent a tab nakusyvat. At the end of zapolirovyvaetsya spot gluing.
The whole process takes a total of 2.5 -3 hours and requires two visits to the doctor. However, do not take the time and money, the resultant effect is worth it. Ceramic inset not only stronger, but also an order of magnitude more beautiful every seal. In addition, it does not settle plaque, and it does not irritate the gums.