The aim of the study was to assess the relationship between the pathology of occlusion and the anatomical features of the structure of the temporomandibular joint with its pathology, as well as to assess the legal basis for the provision of orthodontic care to military personnel. The clinical and radiological study involved 179 young men aged 18 to 35 years, who were divided into 4 groups depending on the state of the occlusion and the peculiarities of the anatomical structure of the temporomandibular joint. A clear synergism of dentoalveolar anomalies and structural features of the temporomandibular joint with the incidence and severity of its pathology in young people was established. Diffi culties in the organization and provision of orthodontic and orthopedic dental care to servicemen in the military health care system are noted, requiring the adoption of legal decisions that optimize their implementation in military medical organizations.

When determining the structural features of the facial skull in patients with mesial occlusion, it is advisable to separately study the structure and size of the jaws. The particular attention should be paid to the violations of bone structure in the transverse plane.

The ultrasound densitometry is a measurement of bone density which has high diagnostic capabilities. This study presents a method of ultrasound examination of the bone tissue of the animal lower jaw. The analysis of the obtained information on the X-ray and ultrasonic density of the bone tissue was carried out, the results were compared. The use of ultrasound densitometry to assess the jaw bone density is of great clinical interest.

Anew method for assessing the position of incisors and lips relative to the vertical PLV line is proposed, which allows more accurate determination of their position. It was found that the distance from the vertical line to the upper lip is signifi cantly less than that of the lower lip in patients aged 17-25 years with mesial occlusion. The upper incisors slightly change their position compared to the norm, while the lower incisors are located more vestibular due to their protrusion or position.

The correlation was found between the pain severity and TMD parameters obtained with the BioJVA apparatus in the group of patients with TMD and distal occlusion before and after orthodontic treatment, as well as in comparison with the group of patients with physiological occlusion. The significant correlation coefficients were found between the mean index for all areas and the «High/Low Integral» ratio in the frequency aspect according to the data of computed electro vibrography before and after treatment with splint therapy. Using the splint for 1,5 months improves the condition of patients with distal occlusion by pain assessment of 7 areas. Subjective and objective assessment of cochlear disorders changes, as well as statistically significant differences in individual components of acoustic stem evoked potentials.

The method for obtaining a 3D model of the alveolar ridges and palate of a newborn with non-fusion by the intraoral scanner, 3D modeling and the fabrication of customized aligners for each step of the convergence were proposed. The use of individual aligners as an obturator allows to get a more accurate result in preparation for the surgical stage of non-junction closure.

Currently, six relatively new technologies are used in specialized orthodontic laboratories: digital photography, laser welding, computer-aided design / computer-aided manufacturing (CAD / CAM), intraoral scanners (3D scanners), 3D printing, and thermoforming. Dentists and dental technicians should be aware of the range of opportunities offered by digital technology to provide a high level of medical care.