Sealing is one of the easiest ways to solve a problem with teeth. But today there is a fairly large number of types of fillings for teeth, and without proper preparation it is difficult to understand what is needed.
Peculiar dental fillings were used even before our era, when the Mayans Indians, striving to achieve perfection in all, drill in the teeth channels that were filled with turquoise, jade, bronze. In their love of beauty, they performed these operations, even with healthy teeth.
Today, for the manufacture of seals, other materials are used, many are equally aesthetically appealing, but the main thing - to a greater extent correspond to its function - to protect teeth.
Types of seals for teeth
The easiest distribution of fillings for teeth is temporary and permanent. The main difference is already evident from the title: if the first will stand for a certain period, then the second - for many years.
However, it is a mistake to assume that a temporary seal must itself fall down after some time. If this happens before the treatment is completed, you must again contact the dentist to replace her.
Temporary seal differs from the permanent so that it is easy to remove, and it is put in the following cases:
- Diagnostics, for example, checking for nerve damage (if there is pain in the area after the seals are installed, the nerve is removed);
- Treatment - after the introduction of a medicinal preparation, which after some time it will be necessary to clean or introduce an additional portion;
- Protection - for the destruction of the nerve can use arsenic, the seal can protect it from the mouth cavity.
Seals for teeth: types of materials
A more complex criterion for separation is the material from which a permanent seal is made.
- Silicate cement. Even with perfect care and the absence of violations in the manufacture of the material itself, such a seal for teeth is rather short-lived and does not last for more than three years. Yes, and aesthetically, she loses: cement seals are sensitive even to food coloring. Another drawback that prevents cement seals from gaining popularity is high toxicity. The only thing that speaks in their favor is the low cost. However, given that cement seals easily lead to the formation of secondary caries, the issue of financial benefits remains highly controversial. Glass-ionomer cement is less toxic and does not cause caries, but also quite unstable: seals from this material serve about 5 years. As a rule, they are used in the installation of crowns, fixing orthopedic, orthodontic and other structures, as an insulating or gasket, as well as to close the cavities in a small area on chewing surfaces.
- Up to 30 years can withstand sealants for teeth with amalgams - metal alloy with mercury, but allocated to them poisonous vapors are considered the main disadvantage of this type of seals. True, whether they really have a deleterious effect on the body, there is still controversy, while the fact that metal seals lead to a change in the color of the tooth and even its possible split is a established fact. On the other hand, they are quite cheap, do not cause secondary caries and allow to repair large defects of the crown. Still, doubts related to mercury have led to the fact that the use of amalgam seals is prohibited in many countries.
- In the sixties composite teflon seals appeared, for the manufacture of which a chemical mixture of artificial resin and finely chopped plastics or glass was used. These seals, too, are not without disadvantages: the solution is kneaded immediately before application and quickly freezes, therefore, not always the result can be called aesthetic. Composites are a toxic material, and the seal of this mixture is darker over the years. Service life - up to five years.
- The foregoing refers to composites of chemical hardening, while there are still light-curable composites, or photopolymers. The technology of their application allows to control the process of solidification, creating not only a good quality, but also a good seal. In addition, seals with light-curable composites are durable, you can pick a shade under the color of the teeth. And although today it is one of the most common types of seals, it is necessary to note its main disadvantage: shrinkage (due to the properties of the chemical composition), which can lead to deformation of the seal and a cut of thin walls of the tooth, and incomplete hardening. Therefore, photopolymer seals do not use with large defects.
- Finally, it is worth mentioning ceramic sealants for teeth, the main advantage of which is the composition of the material: as close as possible toothpaste, it is completely harmless, retains the color, with its use no shrinkage occurs. The only problem is the complexity and length of production: for a ceramic seal the specialist may need about a week.
Thus, all modern materials have their advantages and disadvantages, so the doctor's decision is always based on many factors. But do not forget that the life of the fill seal for the teeth is influenced not only by the properties of the material and the professionalism of the dentist, but also the way of life.