[Impact of chemical surface treatment of samples made of domestic zirconium dioxide on adhesive strength]. / Vliyanie khimicheskikh metodov podgotovki poverkhnosti obraztsov iz otechestvennogo dioksida tsirkoniya na pokazateli adgezionnoi prochnosti.

Ceramic based on zirconium dioxide (ZD) is a modern, durable material for the manufacture of dentures. It is known that ZD is not etched as glass-ceramic, making it difficult to prepare this material before fixing. OBJECTIVE: To study the impact of various methods of surface treatment of ZD-based ceramic on adhesive strength. MATERIALS AND METHODS: Sandblasting with Al2O3 particles sized 50 µm and application of primers with 10-MDP phosphate monomer were used. Adhesive strength values for following 4 groups of samples were obtained: 1st group - RelyX U200 + sandblasting + Compofix new primer (n=9); 2nd group - Compofix + sandblasting + Compofix new primer (n=9); 3rd group - Panavia F 2.0 + sandblasting (n=9); 4th group (control) - Variolink Esthetic DC + sandblasting + Monobond Plus primer (n=9). RESULTS: The highest strength of adhesion was in the 4th group - 48.71±5.71MPa, the smallest in the 3rd group - 9.49±35.24 MPa. Fully domestic components used in the 2nd group allowed to obtain values of 42.50±9.79 MPa. Adhesive strength in the 1st group was 34.11±4.78 MPa. CONCLUSION: The absence of the 10-MDP-based primers application in the preparation of ZD ceramic reduces the adhesive strength between resin cement and its surface. The domestic set for fixation of dentures can be effectively used for ZD on the same basis as European analogue.

[Comparative evaluation of traditional and speed sintering of dental ceramics based on zirconium dioxide]. / Sravnitel'naya otsenka traditsionnogo i skorostnogo obzhiga stomatologicheskoi keramiki na osnove dioksida tsirkoniya.

This study analyzed the traditional and high-speed firing of dental ceramics based on zirconia. The types of furnaces for sintering zirconia, the basic principles of traditional, high-speed and super-speed firing, as well as the effect of the sintering protocol on the structure, physical, mechanical, optical properties, wear and marginal fit of zirconia were evaluated. The analysis showed that it`s necessary to develop a special optimal sintering technique using particular protocols in specific types of furnaces for each dental ceramic material based on zirconia, taking into account the composition and structure of the ceramics. To write this review, articles from the electronic databases of Medline, PubMed and the websites of dental journals were used.

[Adhesion of dental cements to zirconia restorations. Part 2]. / Adgeziya tsementov k keramicheskim zubnym protezam iz dioksida tsirkoniya. Chast' 2.

The information about methods of surface preparation for dentures made from ceramic based on zirconium dioxide for better adhesive fixation is presented in the first part of this article. Micromechanical methods of preparation for cementation of the surface of a zirconia dental prosthesis are discussed in the first part of this article. The second part of the article provides an overview of scientific research on chemical methods for preparing a surface made of zirconia and the problem of the bond strength of polymer cement with a prepared surface made of zirconia.