The purpose of the study is to improve the efficiency of the dental specialists training, as well as to identify their relationship to learning with the use of acrylic teeth and virtual simulators. The study included 55 students of the 5th year of the Dental Faculty of RUDN. The time spent for the preparation of I and II classes by Black was estimated. At the end of the cycle, it was revealed that when working on the virtual simulator the results were better. In addition, students were surveyed. Thus, the virtual simulator provides an innovative approach that allows creating with very high accuracy real tactile sensations and the sense of presence.

Metronidazole-based preparations are widespread in periodontal practice among those with antibacterial action. However, recently there are more and more reports about the increase in resistance of pathogenic microorganisms to this drug. The solution of this problem is facilitated by the combined effect of this drug and physical therapeutic factors, which can ensure the delivery of the antimicrobial agent to the periodontal tissues and its deposition. The efficacy of Metrogil Dent gel ultraphonophoresis with low-frequency ultrasound as well as Metrogil electrophoresis in the treatment of periodontitis has been proved. However, there is no information in the literature about the comparative effectiveness of ultraphonophoresis and electrophoresis of metronidazole-based preparations in the complex treatment of periodontitis, which is of scientific and practical interest.