Features of t teleroentgenographic parameters of the upper and lower jaws in Ukrainian young men and young women with orthognathic occlusion and with different types and profiles of the face according to Schwarz A. M.

O S Prokopenko,E V Beliaiev,L А Cherkasova,Mete Korkut Gulmen,O I Popova

doi:10.31393/bba39-2020-10

Abstract

Numerous studies have shown that teleroentgenographic indicators differ in people of different races, ethnicities, different populations, inhabitants of different geographical areas and often differ from the values of such indicators described by the authors of classical methods of cephalometric analysis. The aim of the study was to establish teleroentgenographic parameters that can be most often corrected during orthodontic and surgical interventions and to determine their features in Ukrainian young men and young women with orthognathic occlusion depending on profiles and facial types according to Schwarz A. M. The results of studies of lateral teleroentgenogram of the head of 49 young men aged 17 to 21 years and 76 young women aged 16 to 20 years with a physiological bite as close as possible to orthognathic using dental cone-beam tomography Veraviewepocs 3D Morita (Japan) are presented in this work. The morphometric teleroentgenographic parameters of the upper and lower jaws and inter-jaw parameters, which can most often change during surgical, orthodontic, cosmetic interventions in groups of persons with different profiles or types of faces according to Schwarz A. M., were determined. All significant differences between groups of young men with different facial profiles and between groups of young women with different facial profiles are of the same type: in both young men and young women with the first type of face profile – angle B is greater than in representatives with the third profile type, and angle MM is greater than in representatives with the third and second profile types; both in young men and young women with a second face type profile – distance R.asc. larger than the representatives with the first profile type; in both young men and young women with the third face profile type, the angle F is larger than in the representatives with the first profile type, the angle I is larger than in the representatives with the first and second profiles type, and the distances L-Mand and R.asc. larger than the representatives with the first profile type; the angle T have greater values in young men or young women with the first profile type of the face than with the second and third profiles type and have greater values in the representatives with the second profile type than with the first type profile of the face. Another picture is observed in the analysis of indicators in young men and young women with different face types. Thus, in persons with the third type of face the distance Max is greater than in persons with the first type and with the second type of face; the angle F in young men or young women with the third type of face is greater than in representatives with the second and first types, and in representatives with the second type – greater than in young men or young women with the first type of face. Young men with the first type of face have higher values of angles G, B and T than young men with the third type and angle B than young men with the second type of face; in young men with the second type of face – greater values of angle I than in young men with the first type and angle B than in young men with the third type of face; young men with the third type of face have larger values of angle I and distance R.asc. than young men with the first type of face. In young women, only tendencies to higher values of I and T angles were recorded in persons with the third type of face than with the first type. The obtained results indicate the need to divide young men and young women into separate groups according to the profile and type of person for an individualized approach to the definition and analysis of teleroentgenographic indicators in the population of Ukraine.

Highlights

X-ray cephalometric analysis using lateral teleroentgenography plays a leading role in understanding the anatomy of the human dental system, establishing its individual anatomical features [27] and is one of the most informative methods of diagnosing and clarifying congenital or acquired pathological anomalies of the dental system, determining the various clinical forms of such anomalies [20].Numerous author's methods of cephalometric radiological researches and the analysis of the received radiographs offered in the last century remain actual, both for practical use, and for scientific researches
The aim of the work is to establish teleroentgenographic indicators, which can most often be corrected during orthodontic and surgical interventions and to determine their features in Ukrainian young men and young women with orthognathic occlusion depending on profiles and face types according to Schwarz A
Lateral teleroentgenograms of the head were obtained in 49 young men aged 17 to 21 years and 76 young women aged 16 to 20 years with a physiological occlusion as close as possible to orthognathic using a dental cone-beam tomograph Veraviewepocs 3D Morita (Japan)

Summary

Introduction

X-ray cephalometric analysis using lateral teleroentgenography plays a leading role in understanding the anatomy of the human dental system, establishing its individual anatomical features [27] and is one of the most informative methods of diagnosing and clarifying congenital or acquired pathological anomalies of the dental system, determining the various clinical forms of such anomalies [20].Numerous author's methods of cephalometric radiological researches and the analysis of the received radiographs offered in the last century remain actual, both for practical use, and for scientific researches. Further research has shown that teleroentgenographic indicators have their own characteristics, differences in people of different races [1, 12, 16, 19, 24], ethnic groups [18, 23, 30], different populations [11, 21], residents of different geographical areas [22, 25], different countries [10, 15, 17] and often differ from the values of such indicators described by the authors of the methods This necessitates the determination of teleroentgenographic indicators typical for the inhabitants of Ukraine. J., and differences in these indicators compared to the author's methods of cephalometric analysis [2, 6, 7]

Objectives

Methods

Findings

Conclusion