Correlations of teleradiometric indicators of “craniofacial proportions” according to the Ricketts method with the sizes of teeth and dental arches in Ukrainian young men and young women with physiological occlusion

Annotation. The study of the relationships between the structural parameters of the facial skeleton and odontometric characteristics is important for understanding the individual characteristics of the maxillofacial region. Radiological analysis techniques allow us to accurately assess the anatomical relationships that form the harmony of the profile and position of the jaws. At the same time, anthropometric features, in particular the shape of the face, can significantly affect the relationship between the size of the teeth and the shape of the dental arches. The study of such patterns in young people without occlusion pathologies will contribute to the optimization of diagnostics and treatment planning in orthodontics. The aim of the study was to establish the features of the correlations between teleradiometric indicators of «craniofacial proportions» according to the Ricketts method with the sizes of teeth and dental arches in Ukrainian young men and young women with physiological occlusion without and taking into account the type of face. The computed tomographic sizes of teeth, dental arches and indicators of «craniofacial proportions» according to the Ricketts method (angles NPog-Por, NBa-PtG, MeSgo-NPog, MeSgo-Por, POr-NA, N-CF-A and POr-SpP) were determined from the computer tomograms of 41 Ukrainian young men and 68 young women with physiological occlusion obtained from the data bank of the Research Center and Department of Pediatric Dentistry of the National Pirogov Memorial Medical University, Vinnytsya. In this contingent, the types of faces according to Garson were also determined. The assessment of correlations between the indicators of «craniofacial proportions» according to the Ricketts method and computed tomography dimensions of teeth and dental arches in young men and young women without and taking into account the type of face was carried out in the licensed package «Statistica 6.0» using nonparametric Spearman statistics. As a result of the analysis of reliable and medium-strength unreliable correlations between teleradiometric indicators of «craniofacial proportions» according to the Ricketts method with the sizes of teeth and dental arches, it was established: in young men and young women without taking into account the type of face – respectively 3.27 % and 9.80 % of connections with the sizes of teeth of the upper jaw, 4.90 % and 9.80 % of connections with the sizes of teeth of the lower jaw and 6.35 % and 7.14 % with the sizes of dental arches; in young men and young women with a wide face type – respectively 8.16 % and 28.16 % of connections with the size of the teeth of the upper jaw, 13.06 % and 32.65 % of connections with the size of the teeth of the lower jaw and 11.90 % and 15.87 % with the size of the dental arches; in young women with a very wide face type – 6.94 % of connections with the size of the teeth of the upper jaw, 9.80 % of connections with the size of the teeth of the lower jaw and 13.49 % with the size of the dental arches. In all groups of young men and young women, pronounced manifestations of sexual dimorphism of the connections between teleradiometric indicators of «craniofacial proportions» according to the Ricketts method and computed tomography sizes of teeth and dental arches were established by the strength, number and direction of reliable and medium-strength unreliable correlations.