CORRELATIONS BETWEEN SKELETAL ANGULAR INDICATORS OF THE JAWS, CHARACTERISTICS OF INCISAL POSITION AND PROFILE OF SOFT FACIAL TISSUES IN ORTHODONTIC PATIENTS

Abstract

Assessment of a face in profile is an integral part of a complete orthodontic diagnosis. The degree of labial inclination of the axes of the incisal crowns in relation to cephalometric and facial indicators are particularly important elements in orthodontic treatment in order to achieve an aesthetic and natural appearance of the face. The purpose of this study is to establish the peculiarities of the correlations between the skeletal angular parameters of the jaws, the characteristics of the incisal position, and the profile of the soft facial tissues of orthodontic patients. Participants and methods. Using the Veraviewepocs 3D device, Morita (Japan), 60 patients (29 men (48.3%) and 31 women (51.7%) with various occlusal pathologies aged from 11 to 39 years underwent teleradiograms. Using the licensed program for cephalometric analysis "Audax Ceph 6.0", the following indicators were analyzed: skeletal sagittal angles SNA, SNB, ANB. Skeletal vertical angles: NL-NSL, ML-NSL, NL-ML. Dento-alveolar parameters: +1/NL, +1/NA, -1/ML, -1/NB, +1/-1. Cephalometric indicators of soft tissues and facial profile: Gl'Sn'Pog', Nasolabial angle, Ls'-E-line, Li'-E-line. Correlations were evaluated in the IBM SPSS Statistics 23 license package using Spearman's non-parametric statistics. Results and discussion. Both men and women show that the ANB angle has the largest number of correlations with dental and profilometric indicators. In both cases, the angle ANB has the highest degree of correlation with the face profile angle Gl'Sn'Pog'. In men, the level of significance of ANB to Gl'Sn'Pog' is (r=-0.796, p=0.000), for women this index is r=-0.771, p=0.000. This indicates a significant influence of skeletal pathology on the type of the profile and facial aesthetics.