EVALUATION OF CHANGES IN THE PROFILE OF THE FACE DURING ORTHODONTIC TREATMENT OF DISTAL OCCLUSION CAUSED BY ANTEPOSITION OF THE UPPER JAW.

Distal occlusion of the dentition is one of the most common anomalies in the Eastern European population. The widespread use of conservative treatment methods creates the need to predict the results of tooth movement. The problem of the influence of orthodontic treatment on the configuration of the soft tissues of the face is of paramount importance for the orthodontist. Purpose of the study: to evaluate changes in the profile of the face during orthodontic treatment of distal occlusion due to anteposition of the upper jaw. 13 patients aged 18-30 years with distal occlusion caused by anteposition of the upper jaw were examined and treated. A standard examination was carried out, including clinical, anthropometric and radiological diagnostic methods. Orthodontic treatment of all patients was carried out, including the removal of individual teeth in the upper jaw. The study shows the features of changing the configuration of the soft tissue profile of the face in the treatment of patients with distal occlusion of the dentition. As a result of orthodontic treatment, the position of the jaws in the sagittal and vertical planes remained practically unchanged. The soft tissue profile of the face was affected by a change in the position of the incisors. A thorough diagnosis of dentoalveolar anomalies, identification of facial configuration features and knowledge of the changes that accompany orthodontic movements will lead not only to the normalization of occlusion and function, but also to the harmonization of the soft tissues of the face.

CLINICAL AND RADIOGRAPHIC CHANGES FOLLOWING ORTHODONTIC INTRUSION OF OVERERUPTED MAXILLARY MOLARS WITH TWO MINI-IMPLANTS.

Objective - to evaluate clinical and radiographic changes of orthodontic intrusion of upper first molars with two mini-implants, using light intrusion forces, to create the space for prosthetic rehabilitation on the lower jaw. In 20 patients (aged between 26.8 and 45) with secondary deformities in the lateral region in the vertical direction, associated with partial absence of teeth in the lower jaw, and orthodontic preparation for subsequent prosthetics was performed. Each subject was missing 1-2 teeth in the lateral segment. All patients were divided into two groups: with intrusion mechanics with orthodontic implants (20 people) and intrusion with an orthodontic shape memory arch (20 people). The radiographic changes in male and female groups were assessed and compared based on the panoramic radiographs and CBCT data before and after intrusion. In the study 28 molars were fully intruded and their position was normalized with two mini-implants placed palatally and buccally. Mean extrusion time was 7.86±0.42 months (P<0.001), mean intrusion length was 2.97±0.15 mm (P<0.001), and mean change of mesial molar inclination was 2.02±0.44 degrees (P<0,005). The degree of root resorption was evaluated according to CBCT data in Multiplanar reconstruction (MPR); 50% of molars had grade 0 of resorption, 42.85% had grade 1, and 7.15% of molars had grade 2. There was no resorption in the trifurcation area. Intrusion of molars can be successfully accomplished with 2 mini-implants, placed palatally and buccally, with a light traction force (30-50 g) of an elastic chain.

BIOMECHANICS OF CHANGING THE POSITION OF PERMANENT TEETH WITH EARLY LOSS OF THE FIRST TEMPORARY MOLARS.

Premature removal of baby teeth is one of the main causes of deformation of the dentition. The loss of the first temporal molars is most often reported (39.9±4.8%), which leads to displacement of the teeth bordering on the defect, narrowing and shortening of the dental arch, which then leads to retention of premolars, cutting out permanent canines outside the dental arch, pathology of cutting out permanent molars. The aim of the study was to evaluate the biomechanics of permanent teeth migration in patients who prematurely lost their first temporal molars. An anthropometric study of jaw models and orthopantomograms was conducted in 25 patients (age 7-12 years) who had premature loss of the first temporal molars of the upper and lower jaws (age 7-12 years). Complications were evaluated, regularity was revealed and the biomechanics of permanent teeth displacement as a result of the prolonged absence of temporary molars were determined.

The Oral Mucosa Status and the Correlation between the Functional Parameters and the Level of Nitric Oxide Metabolites in Saliva among Patients with GERD.

The study involved 91 patients (48 women and 43 men), aged from 18 to 70 years with GERD. All patients underwent the clinical dental examination according to a single scheme including general clinical manifestations (nausea, single vomiting, belching, heartburn, pain in the epigastrium and around the navel, and poor appetite) and dental manifestations of GERD. The objective assessment of the dental status of the examined patients included the measurement of the functional parameters of the mixed saliva, buffer capacity (BC) of saliva, and the detection of the nitric oxide metabolites (NOx) content in saliva from the right parotid salivary gland ("SRPSG") and in blood serum using the indirect method based on the determination of the stable metabolites: nitrates and nitrites using the Griess reaction. It was established that salivation rate among patients with GERD with the prevailing of ACR and SACR was at the lower limit of normal values (0.32 + 0.19 ml/min), and the salivation rate among patients with the prevailing of SALCR was low (0.10 + 0.04 ml/min). The BC of saliva among patients with the prevailing of ACR and SACR was high (9.07 + 1.23 mmol eq/l and 9.40 + 1.71 mmol eq/l, respectively) and was reduced among patients with the prevailing of SALCR (7.63 + 0.18 mmol eq/l). The NOx level in SRPSG among patients with GERD was increased (especially in Group 3 (20.93 + 11.23 umol/l)). The direct correlation between the indicators of sialometry, the level of the BC of saliva, and the NOx level in SRPSG were established during the study.

[The significance of the dynamics of anxiety-depressive indicators and quality of life in patients with dental anomalies in assessing the effectiveness of orthodontic treatment]. / Znachenie dinamiki pokazatelei trevozhno-depressivnykh rasstroistv i kachestva zhizni u patsientov s zubocheliustnymi anomaliiami pri otsenke éffektivnosti ortodonticheskogo lecheniia.

AIM: To study the dynamics of clinical and psychological characteristics and indicators of quality of life in patients with dental-maxillary anomalies. MATERIAL AND METHODS: Seventy people with different dental anomalies were studied. At the first stage, all patients were assessed according to the developed 'Smile Aesthetics Index' (SAI) with their further division into three subgroups depending on the severity of dentofacial anomalies. Further, a comparative assessment of clinical and psychological indicators and results of quality of life before and after treatment was made. At the final stage, follow-up examination was conducted after 2 years. RESULTS AND CONCLUSION: There are a significant decrease in state anxiety and depression in patients of all subgroups and a significant improvement in the quality of life after treatment. A follow-up examination shows, in general, the stability of the psycho-emotional state of patients in all subgroups 2 years after the treatment.