SPECIFIC FEATURES OF X-RAY ANATOMY AND PROFILOMETRY IN PEOPLE WITH DIFFERENT TYPES OF FACIAL SKELETON

Abstract

This work is a summary of results obtained through clinical, radiological, and photometric studies involving 90 people (aged 18-25) with physiological types of bite. The first stage of the study implied an assessment of the face main anatomical structures location (chin, lips and jaws) relative to the conventionally accepted and proposed lines (planes) of the teleroentgenogram and face profile images. At the second stage, the patients were divided into three groups featuring different types of dental arches – mesotrusive (n=33), protrusive (n=30) and retrusive (n=27), depending on the incisor angle of the antagonizing medial incisors. Almost all patients of Group 1 were observed to have the upper lip touching the nasal line passing through the n (nasion) and the sn (subnasale) points, the lower lip receding backwards and the occlusal relationships falling within the age norm, while the average incisor angle being 135.24±3.09°. In most patients of Group 2, the upper and lower lips were located forward from the nasal line, while the occlusal relationships matched the age norm, and the average incisor angle was 116.24±3.02°. In Group 3, the patients’ upper and lower lips were located behind the nasal line, the occlusal relationships corresponding to the age norm and the average incisor angle making up 146.24 ± 3.34°. The obtained data expand the vision of the upper and lower lip facial topography for various dental arches, and are of applied importance when it comes to assessing the aesthetic profile of soft facial tissues, as well as the data in question can serve the criteria to evaluate the rehabilitation effectiveness in patients with dental pathology in view of their individual maxillofacial features.