[Changes in gingival blood circulation in patients with provisional fixed acrylic dentures].

The adhesion of oral microorganisms to the surface of teeth and dental restorative materials is often the starting point in the developments of caries and periodontal disease. Formation of biofilm on the surface provisional acrylic bridge is especially quickly and can potentially generate decay or periodontal disease on the teeth. Occlusion trauma and occlusion disorders effects on increasing of injure regional periodontal tissues. Using ultrasonic doppler diagnostics oral mucosal blood flow was measured in 79 patients with periodontitis of medium severity with different hygiene conditions before and during orthopedic treatment by provisional fixed dentures was model by different methods. According to the results of this study was stated optimization of oral mucosal blood flow after pre-prosthetic treatments and the supportive hygiene periodontal care during the treatment. Results was used for reduce of functional stress in the in periodontal tissues during the orthopedic alignment by the use of fixed dentures. Specific prosthodontic hygiene protocol and model by individual articulator must be used to treat patients with widespread chronic periodontitis by interim prostheses.

[The dynamics of blood circulation in marginal gingiva after crown preparation by different ledge locations].

The periodontal tissue level may change after gingival margin retraction and tooth preparation. The aim of the study was to assess the influence of these manipulations on the condition of free gingival margin. The study included 53 persons (29 women and 24 men) divided into 4 groups followed-up for 6 to 8 weeks. Blood circulation in marginal gingiva of 118 teeth with healthy periodontal tissues was assessed by ultrasonic Doppler evaluation to reveal the circulation impairments in cervical margin after teeth crown preparation. The first group included 39 teeth, in which the gum was retracted by Roeko stay put non impregna cords ("Langenau", Germany). The second group included 39 teeth with shoulders prepared at the gingival margin; in the third group (40 teeth) the shoulder was located subgingivally. The fourth group (40 teeth) was control. The changes in recovery indices have been analyzed. The linear values were established as most significant and demonstrative. The indices variations and recovery period length depended on the coronal edge location. Statistically significant differences were found among all the groups (p>0.05). The results may be used to improve crown preparation for fixed dentures and decrease the recession rate of free gingival margin.

[Complex psychological assessment of young patients with bruxism].

The aim of our study was multi-faceted study of status the psychological of young people suffering from bruxism. A total of 101 people (44 men and 57 women) divided into 4 groups. The study of mental states and personality traits included the Freiburg Personality Inventory (FPI). The majority of subjects characterized by high reactivity and emotional lability, the surveyed with day and combined bruxism is more pronounced symptoms of irritability, tension, and increased excitability. The best approach when examining young patients with bruxism should be based on accounting data and anamnestic examination not only dentists, but also psychologists and psychotherapists to identify the "background" of mental states and personality traits and correction of sharp variations by special methods.

[Bruxism diagnostics and treatment peculiarities of occlusal disturbances in young people].

Findings in 44 young people with bruxism were described. The case of treatment with occlusal splints was presented.

[The effect of heredity and environmental conditions on the development of atherogenic metabolic shifts]. / Vliianie nasledstvennosti i uslovii sredy na razvitie aterogennykh sdvigov obmena.

Lipid metabolism and lipid peroxidation (LPO) were studied in residents of St. Petersburg (healthy subjects without atherosclerosis history, healthy relatives of atherosclerotic patients, postmyocardial infarction patients, post-apoplectic patients and coronary heart disease sufferers) versus matched subjects living in rural area. Altogether 215 patients were examined. Besides genotype factors, lipid metabolism and LPO were found responsive to environmental factors. These were especially potent in changing the activity of superoxide dismutase, glutathione peroxidase, catalase. In those living in the country myeloperoxidase, superoxide dismutase and catalase activity was higher than in city population. The latter exhibited, though, higher activity of glutathione peroxidase. It is evident that more advantageous ecological conditions have distinct antiatherogenic action on lipid metabolism and LPO, especially, suggesting possible treatment of atherosclerosis by moving to more healthy locality as regards environmental pollution.

[Antigenic properties of BB creatine kinases from various tissues in hens]. / Antigennye svoistva BB-kreatinkinaz raznykh tkanei kur.

Studies have been made on interaction between rabbit antiserum to BB creatine kinase from hen gizzard and BB creatine kinases from the brain, heart and gizzard of hen. The degree of interaction was evaluated by the intensity of fluorescence of the immune complexes labeled by a fluorescent dye. It was shown that the intensity of fluorescence of the immune complexes formed by BB creatine kinases from the brain and gizzard of hen is approximately the same, whereas that formed by BB creatine kinase from the heart is twice lower. The data obtained indicate that structural differences in the region of antigenic determinants exist between BB creatine kinase from the heart and those from the brain and gizzard of hen.

[Use of the indirect immunofluorescence method for the comparative analysis of histones]. / Primenenie metoda nepriamoi immunofluorestsentsii dlia sravnitel'nogo analiza gistonov.

With the help of indirect immunofluorescence on the model systems--a ploid line of wheat, haploid and diploid cells of Chlamydomonas reinhardii, glass beads with adsorbed histones--a study was made of the dependence of ultimate dilutions (UD) of antihistone sera on the quantity, density and immunochemical properties of histones--antigens. The UD value in the artificial model system (glass beads) increased with the rise in the quantity and density of histones on bead to some definite limits, and then the UD remains constant to be determined only by the titre of antiserum. In natural model system (wheat, Chlamydomonas reinhardii), with the rise in quantities of DNA and histones in the nucleus their densities remain constant, with no changes of UD values being observed. The results obtained are discussed in terms of establishing the dependence of UD on immunochemical properties of histones-antigens. Thus, the method of indirect immunofluorescence may be used for comparative analysis of immunochemical properties of histones in various objects.

[Immunofluorescent study of the basic chromosomal protein set of green algae and Euglena]. / Immunofluorestsentnoe issledovanie nabora osnovnykh khromosomnykh belkov nekotorykh zelenykh vodoroslei i évgleny.

Using antisera to fractions H1, H2a, H3 and H4 of the calf thymus histones, a comparative immunofluorescent investigation of these proteins in the nuclei of Chlamydomonas reinhardii, Haematococcus pluvialis, Dunaliella salina and Euglena gracilis was carried out. It has been shown that according to the immunofluorescent test, the nuclei of these algae contain proteins close to fractions H2a, H3 and H4 of the calf thymus histones. H1 fraction in these algae is either absent or can be considered as a protein immunochemically non-related to H1 fraction of the calf thymus histone. For quantitative evaluation (in units of the immunological distance) of the difference between histones of the algae and of the calf thymus in situ by indirect immunofluorescence, it was suggested to use the ultimate dilutions of antisera to histones. It was shown that the ultimate dilutions were correlated with titres of antisera in the reaction of microcomplement fixation. Such an approach and the data obtained are of interest for studying into the evolution of nucleosome histones in unicellular and multicellular eukaryotes.

[Antisera to individual histone fractions of the calf thymus. II. A study of the immunochemical specificity of the histones by an indirect immunofluorescence method]. / Antisyvorotki k individual'nym fraktsiiam gistonov timusa telenka. II. Issledovanie immunokhimicheskoi spetsifichnosti gistonov metodom nepriamoi immunofluorestsentsii.

Immune antisera to 5 fractions (H1, H2a, H2b, H3, H4) of calf thymus histone were assayed using indirect immunofluorescence (IIF). The analysis of such sera by this technique, as well as the data on complement fixation obtained previously, show that these antisera are highly active and specific for various test-objects: thymys, liver nuclei of rat, chicken, and calf, chicken erythrocytes, metaphase chromosomes of mouse fibroblasts. These antisera are of importance for the evaluation of species- and tissue-specificity of different histone fractions. Using the IIF reaction, a comparison was made between the nucleosome fraction H3, which is evolutionary stable, and fraction HI from calf thymus, rat and chicken liver, and chicken erythrocytes.