Relevance. The focus of modern dental treatment not only on the elimination of aesthetic, but also functional disorders requires an understanding of the functional conjugation of the chewing muscles, the possibility of interprognosis of parameters. Objective. Assess the functional relationship between the tone of the chewing muscles proper and the bioelectric activity of the temporal and sublingual muscle groups in children with anomalies of the dentoalveolar system. Materials and Methods. The study involved 36 patients of Childrens Clinical Dental Clinic No. 2 of Voronezh, aged 6 to 12 years, who had not previously received orthodontic treatment and had distal occlusion anomalies. Evaluation of the bioelectric activity of temporal and sublingual muscles was carried out using surface electromyography on the Electromyograph Dental apparatus (Taganrog, Russia), the Chewing General sample. Evaluation of the tone of the chewing muscles proper was carried out using the Mioton-3C device in a state of physiological rest of the lower jaw. Statistical processing was carried out using Microsoft Excel, version 7.0 and the statistical programs SPSS Statistics 21 and STATISTICA 7. Results and Discussion. Correlation analysis revealed the presence of 4 weak positive, 2 weak negative, 14 moderate positive, 3 moderate negative, and 1 noticeable positive correlation between the tone of the right chewing muscle proper and the parameters of the bioelectric activity of the right and left temporal and sublingual muscles. Correlation analysis revealed the presence of 5 weak positive, 7 weak negative, 9 moderate negative correlations between the tone of the left chewing muscle proper and the parameters of bioelectric activity of the right and left temporal and sublingual muscles. Conclusion. A greater effect of the tone of the right chewing muscle on the bioelectric activity of temporal and sublingual muscles was found compared to the tone of the left chewing muscle itself. 27 equations have been derived that can be used as predictive models for calculating the tone of right and left chewing muscles proper depending on the indicators of bioelectric activity of temporal and sublingual muscles.

Changes in the state of the body's regulatory systems by the parameters of cutaneous conductivity and heart rate variability in a healthy adult under the influence of speleoclimatotherapy have been studied. It was revealed that the change in the activity of the body's regulatory systems in terms of the parameters of cutaneous conductivity and heart rate variability in an adult healthy person under the influence of speleoclimatotherapy depends on the sex of the subjects. In girls and boys, different mechanisms of the response of the regulatory systems of the body to the action of air ions are observed. At the same time, in both boys and girls, the central mechanisms of regulation do not participate in response to the speleoclimatic effect, the mechanism of action is determined by the work of internal physiological systems (intrasystem mechanisms) and the autonomic nervous system.

Disorder in the work of muscles of the maxillofacial region affects the development of dental anomalies. Control of myodynamic equilibrium and coordinated chewing muscle activity is necessary during the period of active growth and development of the dental skeleton. Surface electromyography and myotonometry were carried out for 38 children before the beginning of orthodontic correction at the age of 6 to 12 years, having abnormalities of dental system. The study showed a significant number of correlations between the functional activity of the chewing muscle. Integrative connections between recorded values are found, which determines the possibility of complex application of surface electromyography and myotonometry.

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The influence of speleoclimatotherapy on the human body was investigated using questionnaire data. The study involved 29 volunteer 2 nd year of Voronezh State Medical University named after N. N. Burdenko. The course of speleoclimatotherapy consisted of 10 sessionsof 60 minutes each and was carried out in a stationary surface speleological chamber at a temperature of 18-22 °C. The subjects were offered a questionnaire to assess their condition during speleoclimatotherapy (each specific day) and the overall results of the treatment. The analysis of the data obtained was carried out using the Excel version 16. According to the results, despite the alarming symptoms the subjects experienced during the speleoclimatotherapy treatment itself, 85% of them noted positive changes in their functional state, while 15% did not notice any changes. None of the patients reported a negative effect of speleoclimatotherapy on their well-being or functional state, despite our previous findings indicating a mixed effect of speleoclimate on the EEG, immune and cardiovascular system of the person undergoing the treatment. This is a key motivation for further study into the subtle internal mechanisms of the impact of speleoclimate on human health, since the subjective assessment of one's state of health does not always correspond to the changes occurring in human systems, organs and tissues.