Moscow, Moscow, Russian Federation
Moscow, Moscow, Russian Federation
Moscow, Moscow, Russian Federation
Moscow, Moscow, Russian Federation
UDK 616.31 Стоматология. Заболевания ротовой полости и зубов
Aim: to evaluate the characteristics of glazed and polished surface during hydrothermal aging using different types of zirconium dioxide. Materials and Methods. The same standardized samples from different types of zirconium dioxide with a diameter of 10 mm and a height of 1 mm were used for all experiments. These types included Katana (Kuraray Noritake Dental, Tokyo, Japan) HTML (control) UTML, STML, and ZirCAD Prime (Ivoclar Vivadent). Atomic force microscopy (AFM) was used to measure the roughness and to visualize the surface morphology of the samples. The Bruker Innova instrument was used as an atomic force microscope. Image acquisition was carried out in semi-contact mode. The probe sensor was TESP-V2 with a triangular-shaped probe and a tip radius of 7 nm. The scanning area was 50 x 50 μm. Frequency 0.5 Hz. The study of roughness was reduced to the processing of AFM image data. For this purpose, three arbitrary sections were made in the height map channel and the necessary roughness parameters Ra, Rz were calculated using software. Results. There was an increase in roughness during artificial aging of the control group of glazed surface, Prime group of polished surface, and Prime group of glazed surface. There is a decrease of roughness in the process of artificial aging of the control group of glazed surface, for STML and UTML groups of both glazed and polished surface. In the case of samples of group "polishing" it is possible to observe that roughness is formed by traces of abrasive material. From the results of the study of roughness it can be noted that for the samples of the group "Glaze" roughness is formed mainly by traces of brush or other tools used in the process of glaze application Conclusion. Artificial aging affects the roughness of the glazed and polished surface of zirconium dioxide with cubic phase predominance depending on the amount of yttrium content.
zirconium dioxide, roughness, artificial aging, atomic force microscopy, glaze
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