Annotation. Due to the fact that orthodontic treatment is primarily aimed at young people, first of all, cephalometric standards for its proper use should be obtained for this age group by conducting a study taking into account the sex and nationality of the subjects. The aim of the study was to establish the features of cephalometric parameters by the Ricketts method in Ukrainian young men and young women with orthognathic occlusion depending on the type of face and to determine the sex differences of these parameters. 49 young men and 76 young women with orthognathic occlusion in OnyxCeph³™, 3DPro version, Image Instruments GmbH, Germany (license № URSQ-1799) underwent a cephalometric study using the Ricketts method. The division into facial types was performed using the Garson index. As in previous studies, cephalometric parameters were divided into three groups. The analysis of the second (characteristics of jaws by the Ricketts method) and the third (indicators by the Ricketts method that characterize the position of the teeth) groups was performed. Statistical processing of the survey results was performed in the licensed statistical package “Statistica 6.0” using non-parametric evaluation methods. As a result of the conducted researches at young men or young women between different types of face numerous reliable and tendencies of both similar differences, and the corresponding differences of differences of cephalometric parameters according to the Ricketts method concerning the second (higher number) or third groups are established. The pronounced manifestations of sexual dimorphism of cephalometric parameters between young men and young women with the corresponding facial types are established only for the indicators of the second group. The obtained results will improve the existing methods of treatment of dental patients and minimize the likelihood of diagnostic errors and complications.
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