The Influence of Cephalotype and Prosopotype on the Morphometric Parameters of the Lower Face in Young Males from the Luhansk People's Republic

The aim of the study is to determine how the head shape and facial type of young males from the Luhansk People's Republic affect the morphometry of the lower face. Material and methods . A total of 140 young men with a mean age of 19.1±0.7 years were examined. Cephalotyping and facial type determination were performed. 23 morphometric parameters of the lower face were studied. One-way and two-way, as well as multivariate analysis of variance (ANOVA) were performed on the obtained results. Post hoc testing was conducted using Tukey's test. The most suitable ANOVA model was selected based on an information test using the Akaike information criterion. Differences were considered statistically significant at p<0.05. Results . The facial width at the subnasale level is greater in euryprosopes and mesoprosopes compared to leptoprosopes and hyperleptoprosopes. Moreover, significant differences in this indicator were observed between the hyperleptoprosope and mesoprosope groups, as well as between the hyperleptoprosope and leptoprosope groups. The greatest values for the distance between stomion and submentale were identified in hyperleptoprosopes, in whom this indicator was significantly higher than the corresponding values in the other groups of young males. The mean values of the distance between the labium superius and crista philtri dexter points do not differ significantly across the different observation groups. One of the established multivariate dependent variables, on which the influence of the young males prosopotype was significant, was the variable composed of the subnasale – gnation , subnasale – stomion , and stomion – submentale parameters. In this study, using multivariate analysis of variance, this variable was compared across groups of young males with different prosopotypes. It was found that this variable differed statistically significantly across the different observation groups. Conclusion . Constitutional features of the morphometric parameters of the lower face in young males residing in the Luhansk People's Republic were identified. It was established that, compared to cephalotype, the prosopotype of the study participants has a greater influence on the morphometric parameters of the lower face.