Vol 26, No 2 (2023): Опубликован 27.06.2023

Clinical, radiological and cytoenzymochemical studies of the results of using 243 metal-ceramic crowns during the year in 90 patients with healthy periodontium were carried out. The edges of the crowns were located in an equal number of teeth subgingivally and supragingivally. The activity of myeloperoxidase, alkaline phosphatase and cationic proteins in peripheral blood leukocytes was studied. It has been established that the subgingival location of the edge of the crowns causes the activation of the lysosomal apparatus of neutrophilic leukocytes and leads to the development of an inflammatory process in the marginal part of the gum. With the supragingival location of the edge of the crowns, there were no manifestations of the inflammatory process in the gingival margin. Changes in the biological activity of neutrophilic leukocytes precede the clinical manifestations of inflammation. Of the cytochemical parameters used in the study, the highest sensitivity was obtained when assessing the amount of cationic proteins in leukocytes.

Tooth extraction is the most common operation in the practice of a dentist-surgeon. With the increase in the number of surgical interventions, the number of complications also increases, one of which is the occurrence of an oroantral communication with the maxillary sinus. Knowing the causes and patterns of the prevalence of potential risk factors can significantly reduce the number of complications. Thus, the need to diagnose the presence of a potential risk of an oroantral communication formation comes to the fore. Cone beam computed tomography is the most informative and accessible method of radiodiagnosis of the relative position of the upper jaw teeth roots and maxillary sinus. This article presents the results of a study of the dependence of potential anatomical risk factors on the patient's gender according to cone-beam computed tomography.

The features of the dental status of 128 patients aged 30-49 years with abfraction defects of the teeth were studied. Complaints and anamnestic data, presumably related to the presence of abfraction defects, were recorded. An objective assessment of the severity of hyperesthesia of hard tissues of 193 teeth with abfraction defects in 128 patients was carried out using the Schiff air test. In the examined patients in the area of abfraction defects, a high prevalence of hyperesthesia of teeth necks (92.9%), enamel cracks (69.5%), gum recession without signs of inflammation of the gingival margin (89.1%), the presence of functional overload of teeth with abfraction defects (87.5%). In the study of 75.1% of teeth with abfraction defects, a high degree of hyperesthesia (2-3 points on the Schiff scale) was recorded. Hyperesthesia of the cervical region of the teeth is the leading symptom of abfraction defects, its predictable and guaranteed elimination during direct composite restoration is an urgent task in the complex treatment of these patients.

The article discusses the results of a clinical and microbiological study of the anti-plaque, anti-inflammatory, hemostatic, antibacterial and anti-adhesive effects of the developed composition in the form of a gel for the care of oral tissues based on aspen bark extract, chlorophyll, dihydroquercitin, D-panthenol, methyl salicylate, the effect of this complex on the pH level of the gingival fluid, the results of a microbiological study to determine the survival of microorganisms such as Streptococcus sanguinis, Streptococcus mitis, Streptococcus oralis, Streptococcus salivarius, Staphylococcus aureus, Enterococcus faecalis, Klebsiella pneumoniae, Pseudomonas aeruginosa, Acinetobacter baumannii, the results of determining the adhesive properties of S. Sanguinis in the presence of a gel composition, the effectiveness of the reduction action indices ONi-S, SBI, PMA, changes in the pH level of gingival fluid, antibacterial and anti-adhesive efficiancy.

 This work represents a completed study on the development and implementation of the developed and optimized virtual-simulation program of continuing medical education (36 hours) to improve the manual skills of therapeutic treatment in dentistry in the module "Direct Restorations" using the evaluation of the survival rate of knowledge and skills obtained.

With the traditional system of practical retraining of military dentists, using the dental clinic as a training base is difficult; the presence of a preceptor is required during the training manipulation; training depends on the clinic schedule and the availability of the pathology being studied; and there is no opportunity to repeat the manipulation or intervention. In addition, evaluation of the level of practical training of trainees is subjective, there is no unified system of its objective assessment [1-4]. Two stages are introduced for the trainees in the continuing medical education system: Stage 1 - assessment of the available practical skills on standard assignments, Stage 2 - assessment of the mastered practical skills. Improving the practical skills of practicing military dentists with the help of simulation training eliminates the risk to the life and health of the patient and trainee, allows you to conduct classes on an individual educational program without taking into account the working hours of the medical organization and the work schedule of the teacher, makes it possible to repeatedly practice the skill and bring the manipulation to automatism, provides objective quality control of its implementation, easily models rare pathologies and clinical cases [1-7].

Recurrent aphthous stomatitis is a polyetiological inflammatory disease of the oral mucosa, characterized by the appearance of aphthous ulcers. The etiology and pathogenesis of this disease have not been finally revealed. There is an imbalance of immunity observed in patients who are suffering from recurrent aphthous stomatitis caused by the influence of certain trigger factors. The purpose is to summarize the literature data on the relationship of somatic status with the occurrence of recurrent aphthous stomatitis. The review considers the pathogenesis of recurrent aphthous stomatitis, as well as possible trigger factors: genetic predisposition, infections, somatic diseases, allergies, stress, and hypovitaminosis. An obligatory link in the pathogenesis of recurrent aphthous stomatitis is an imbalance of immunity - cellular (the production of pro-inflammatory cytokines increases, and the synthesis of anti-inflammatory heat shock proteins decreases) and humoral (an increase in the number of neutrophils and B-lymphocytes, activation of the complement system). Genetic predisposition, some somatic diseases (Behcet's disease) and viral infections (in particular, COVID-19) lead to an imbalance in the immune system. Provoke the occurrence of recurrent aphthous stomatitis infections, diseases of the gastrointestinal tract, stress and insufficiency of B vitamins and trace elements. The indirect effect of trigger circumstances is due to a decrease in the trophism of the oral mucosa, which leads to a local decrease in the number of factors of cellular and humoral immunity and to hyposalivation and a decrease in the pH of the oral fluid, which provokes the reproduction of opportunistic microflora. Based on the analyzed literature data, it can be concluded that the somatic status influences the development of recurrent aphthous stomatitis. Accordingly, patients suffering from recurrent aphthous stomatitis should be referred to a general doctor for evaluation.

The paper presents a comparative analysis of preparations based on rosehip fruits available on the Russian market in order to determine the effectiveness and expediency of choosing a drug. It is shown that the expediency of choosing a drug should first of all be determined by the purpose of use, despite the fact that all drugs, in addition to specific action, exhibit similar biological activity due to the content of vitamin C and other biologically active substances (BAS), which, depending on the variety of rosehip and the method of preparation of drugs, are still in them in different quantities. For the treatment of skin diseases, it is necessary to choose oils rich in PUFA and vitamin E. For the treatment of liver diseases, you should choose low-vitamin rosehip fruits or syrups based on it, which contain the largest amount of organic acids compared to other drugs. Among the natural preparations of the group of restorative and immunomodulatory effects, the most effective were rosehip fruits and water-soluble dry extract. In addition, it has been experimentally shown that all preparations from this group, except syrups, have adsorption activity against lead ions, which expands the list of useful properties of preparations based on rosehip fruits and increases the effectiveness of their use.