The study of the parameters of the upper respiratory tract has become one of the leading directions of medical research, due to the connection of this structure with the occurrence and course of many diseases of both childhood and adulthood. The study of normative indicators of this structure and its relationship with craniometric indicators should be the first step before further research of samples with pathologies. The purpose of the study is to establish correlations of cephalometric parameters of the upper respiratory tract in Ukrainian young men and young women with an orthognathic bite, regardless of the type of face. Primary lateral radiographs of 49 Ukrainian young men (aged 17 to 21 years) and 76 Ukrainian young women (aged 16 to 20 years) with an orthognathic bite and the absence of upper respiratory tract pathology taken from the database of the research center and the Department of Pediatric Dentistry age of National Pirogov Memorial Medical University, Vinnytsia, with the help of the licensed medical software OnyxCeph3™, version 3DPro (Image Instruments GmbH, Germany) and the diagnostic program “UniqCeph”, a cephalometric analysis of the upper respiratory tract was performed. In the “Statistica 6.0” license package, correlations between cephalometric indicators of the upper respiratory tract were assessed using non-parametric Spearman statistics. In Ukrainian young men, multiple, mostly direct, medium-strength (r= from 0.32 to 0.48) and strong (r= from 0.65 to 0.83) correlations were established between most of the characteristics of the upper respiratory tract or tongue; in young women, there are also predominantly direct, medium-strength (r= from 0.33 to 0.57) and strong (r= from 0.62 to 0.85) correlations between most of the characteristics of the upper respiratory tract or tongue, as well as medium-strength inverse (r= -0.30 and -0.40) and direct (r= 0.45 and 0.85) correlations between most characteristics of the soft palate. In addition, in Ukrainian young men, multiple inverse correlations of mainly medium strength (r= from -0.33 to -0.49) were established between the value of the PASmin distance and the UAA section with the value of the SPT distance and the SPA section, and between the value of the NL/PM-U angle and most of the characteristics the tongue, as well as multiple direct, mostly medium strength (r= from 0.30 to 0.55), connections between the characteristics of the upper respiratory tract itself and the hyoid bone or tongue and between the characteristics of the hyoid bone and the tongue; in young women, there are mainly straight lines of medium strength (r= from 0.33 to 0.55) between the value of the AH-CV distance and most of the characteristics of the upper respiratory tract itself, between the value of the AH-FH distance and all characteristics of the tongue, and between the value of the PM-U distance and by the distance VT and the section TA. Thus, the most pronounced manifestations of sexual dimorphism of connections are established between the characteristics of the soft palate, between the characteristics of the upper respiratory tract itself and the soft palate or tongue, as well as between the characteristics of the soft palate and the hyoid bone.

The study of the features of the upper respiratory tract and the relationship of their parameters with other anatomical formations and structures of the human body is one of the promising areas of modern science. Since numerous anatomical components are involved in the functioning of the respiratory tract, their detailed study should be carried out separately. One of these components that is of direct interest to science and practice is the soft palate. The purpose of the study is to establish the peculiarities of the teleroentgenometric parameters of the soft palate in Ukrainian young men and young women without pathology of the upper respiratory tract with an orthognathic bite without and taking into account the type of face. Determination of teleroentgenometric parameters of the soft palate was carried out in 72 young women and 46 young men with no pathology of the upper respiratory tract with an orthognathic bite (primary lateral teleroentgenograms were taken from the database of the research center and the Department of Pediatric Dentistry of the National Pirogov Memorial Medical University, Vinnytsya). For all young men and young women face type was determined using Garson's morphological index. The analysis of the obtained results was carried out in the statistical package “Statistica 6.0” using non-parametric estimation methods. As a result of the conducted research, pronounced gender differences were found (significantly greater, or a tendency to greater values in young men): the value of the PM-U distance in representatives without taking into account the type of face by 7.1 %, with very wide – by 9.2 %, with wide – by 8.4 % and with narrow – by 7.4 % face types; values of the SPT distance in representatives without taking into account the face type by 10.3 %, with very wide – by 16.4 % and with narrow – by 23.1 % face types; the values of the NL/PM-U angle in representatives without taking into account the face type by 7.6 % and by 11.5 % with wide face types; the size of the SPA area in representatives without taking into account the type of face by 17.2 %, with very wide – by 24.4 %, with wide – by 13.4 % and with narrow – by 32.2 % of face types. When analyzing the value of teleradiographic parameters of the soft palate in young men between different types of faces, it was established that significantly higher values or trends towards higher values in representatives with a narrow face of the SPT distance and SPA area than in young men with a very wide (respectively by 8.9 % and 13.0 %) and average (by 13.9 % and 22.2 %), respectively, face types, and in young men, regardless of face type, there is a tendency for greater values of the PM-U distance than in representatives with an average face (by 4.2 %). In young women with a narrow face, only a tendency to greater values of the NL/PM-U angle was established than in young women with a wide face (by 6.2 %). The results of the study are an integral element of determining the normative values of various parameters of the upper respiratory tract, which enables practicing doctors to more correctly distinguish the norm from pathology.

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The upper respiratory tract is a component of the respiratory system, which ensures the performance of several key human functions at once. The variability of cephalometric indicators of this structure of the human body, depending on the peculiarities of body structure, nationality, sex, and other factors, is one of the current topics of discussion among modern scientists. The purpose of the study is to establish the peculiarities of the cephalometric characteristics of the upper respiratory tract in young people without pathology of the upper respiratory tract with an orthognathic bite without and taking into account the type of face. For 72 Ukrainian young women and 46 young men with an orthognathic bite and the absence of pathology of the upper respiratory tract, taken from the database of the research center and the pediatric dentistry department of National Pirogov Memorial Medical University, Vinnytsya, determination of cephalometric parameters of the upper respiratory tract itself was carried out. The face type of young women and young men was determined using Garson's morphological index. The statistical analysis of the obtained results was carried out in the licensed statistical package “Statistica 6.0” using non-parametric estimation methods. In Ukrainian young women and young men without and taking into account the type of face, the percentile range of cephalometric parameters of the upper respiratory tract proper was established (distance PASmin – the size of the retroglossal oropharyngeal airway space, distance PM-UPW – the size of the nasopharyngeal airway space, distance U-MPW – the size of the retropalatal oropharyngeal airway space, distance V-LPW – the size of the hypopharyngeal airway space, area UAA – the size of the upper airway area). Sex differences (significantly greater, or a tendency towards greater values in young men) of distance V-LPW values were found in representatives without taking into account the face type by 13.8 %, with a wide face type – by 11.6 % and with a narrow face type – by 15.9 %; as well as the size of the UAA area in representatives without taking into account the face type by 20.6%, with a very wide face type – by 21.2 %, with a wide face type – by 21.6 % and with an average face type – by 23.1 %. Both in young women and in young men, no reliable differences or trends in the magnitude of the cephalometric parameters of the upper respiratory tract between representatives with different types of faces were established.

Annotation. The versatility and complexity of the structure of the upper airway is the subject of research by researchers in various fields of medicine. In particular, the greatest attention is paid to infectious diseases, injuries and their consequences, congenital pathologies of the upper airway. However, to understand certain processes in the human body, in particular pathological, it is necessary to know which indicators of the upper airway should be considered normal and what can affect their value. The purpose of this work is to systematize information and acquaint with modern views on anthropometric variability of the upper airway. To achieve this goal, an analysis of literature sources not older than 10 years, included in the scientometric databases Scopus, Web of Science and Google Academy. A study of scientific papers has shown that the most effective and appropriate method of studying the indicators of the upper airway for further anthropometric analysis is a cephalometric study. The analysis of foreign literature showed the importance of the influence of such factors as sex, age, nationality and structural features of cranial and dental-maxillary parameters on the cephalometric parameters of the upper airway. In the analysis of the domestic literature, research performed in this direction was not found. Thus, conducting research to identify normative cephalometric indicators of the upper airway in the Ukrainian population, taking into account the experience of foreign scientists is a promising and relevant area of research for both theoretical and clinical medicine in Ukraine.