The protective coating deposited by ion-plasma sputtering have a very vivid aesthetic and decorative properties that make them attractive for solving design problems, and also enhance the operating characteristics of the products (increases strength, hardness, durability). The main stages of obtaining protective and decorative coatings by electric arc method, namely condensation by ion bombardment (CIB), are considered. The properties of the cathode substance, and hence the compounds formed by these substances, depend on their position in the periodic table. The dependence of the coating properties and features of the electronic structure of the material from which the cathode is made is analyzed. The effect of ion-plasma treatment of the surface of glazed ceramic tiles on their properties is studied. The distinctive features of the structure of the glaze layer of domestic and foreign ceramic tiles are revealed.

Aim. The formation of biofilms, involving microorganisms from the oral cavity, on the surface of various structural dental materials was investigated. Flexistron Plus, Dentalos Plus, and PEEK are used in dental orthopedic practice for prosthetics. Materials and methods. The difference in quantity depends on the structure and type of plastics, as well as on their mechanical cleaning. All the plastic samples were obtained using atomic force microscopy, which made it possible to detect differences in the microstructure and microrelief of all the types of plastics and to demonstrate bacterial growth on plastics before and after the mechanical cleaning of their surfaces with a toothbrush. Conclusion. The revealed facts of increased microbial contamination after the mechanical treatment of the surface of polymer materials suggest the need for additional lining with harder materials or the creation of new composites based on these polymers with high hygienic adequacy.