The temporomandibular joint is paired, a complex formation of an ellipsoid shape, which is formed by the articular head of the lower jaw, the mandibular fossa and the articular tubercle of the temporal bone, covered with fibrous cartilage. There are two types of movements in the temporomandibular joint: translation and rotation, which implement protrusion-retrusion, right and left mediotrusion, and opening-closing. Computerized axiography is used for assessment of the mandibular movements and the patient’s skeletal parameters. This type of examination allows you to adjust the articulator for an individual function and to study the qualitative and quantitative characteristics of the temporomandibular joint.

The use of X-ray radiation is the main additional method for complete visualization of hard and soft tissues in dentistry and maxillofacial surgery. Cone-beam computed tomography (CBCT) is of leading importance among other methods. Three-dimensional reformation of CBCT data into a multiplanar or three-dimensional image of anatomical structures allows for a qualitative assessment of the area of interest and to choose the right treatment tactics if necessary. Nevertheless, there are a number of factors or artifacts that lead to distortion, disrupt the image or lead to loss of information during CBCT, in addition, the formation of overdiagnosis is not excluded. Currently, an active search is underway for ways to improve the quality of CBCT images and eliminate artifacts to improve the quality of diagnostics. This review is devoted to the description of the main causes of artifacts and modern methods of their elimination.

The fundamental problem of precision medicine is the division of the population of sick and healthy people into separate individuals, differing in the likelihood of disease occurrence and the ability to respond to various types of therapy. This is mainly due to the individual, constitutional features of the structure, including the dentoalveolar system. The introduction of a constitutional-typological approach in a comprehensive study of the human dentition is an important task of modern dentistry, since it allows one to determine the characteristic morphological and functional characteristics of each individual individual to improve the methods of diagnosis and treatment of dentoalveolar pathology. The article examines the morphometric features of the dentoalveolar system in people with brachypalatinal («wide» and «low») type of palatine vault, as well as their relationship with the shape of dental arches and the size of the inter-incisal angle at a physiological occlusal norm. As a result of the study, the following regularity was determined: the brachypalatinal type of the palatine vault corresponds to «wide» dental arches of the brachygnathic type with an inter-incisal angle of more than 145 degrees. The value of the brachypalatinal index of the palatine fornix, as the ratio of the height of the palate to its width, exceeds 45 percent, and the gnathic index of the dental arches is 0.59 ± 0.03. The data obtained can be used in the clinic of orthodontics, orthopedic dentistry, maxillofacial surgery to assess the parameters of the hard palate, diagnose pathological forms of the palatine fornix and determine the effectiveness of the treatment.

Taking into account the high demand for professional teeth whitening in patients, as well as a significant high percentage of hyperesthesia after this medical manipulation, the urgency of solving this problem becomes obvious. Our study was carried out in 17 patients aged 20 to 35 years with complaints of hyperesthesia after professional teeth whitening with a diode laser with a wavelength of 810 nm using President Sensitive toothpaste with potassium nitrate and strontium chloride at home. All patients underwent professional oral hygiene before teeth whitening, recommended toothpaste and a brush, and received training in home care and teeth cleaning. According to our research, the toothpaste with potassium nitrate and strontium chloride has a pronounced desensitive effect and corresponds to the declared parameters. Thus, after professional whitening with a diode laser with a wavelength of 810 nm and subsequent application of toothpaste with potassium nitrate and strontium chloride, a decrease in tooth sensitivity, remineralization of hard tissues and suppression of bacterial growth were revealed. However, the selection should be individualized, taking into account all medical indications and properties of hygiene products.

Cancer of the lower jaw is one of the most common causes of the development of total defects. There are many indices and indicators to assess the quality of life of patients with this pathology, but they do not fully describe the features of their postoperative rehabilitation. The question of developing an evaluation criterion for the introduction of a special device in patients with subtotal defects of the lower jaw remains open.

Material and methods. In the period from 2010 to 2021, 100 patients with subtotal defects of the lower jaw, aged 30 to 65 years old, who are being treated in the Department of Maxillofacial Surgery at the Department of Maxillofacial Surgery of the GBUZ SKKKB, were interviewed. All patients were divided into 2 groups of 50 people each. In the main rehabilitation was carried out using a special device to optimize the biomechanics of the lower jaw, in the control group, rehabilitation was carried out without one. The article presents the results of assessing the quality of life, which were carried out using a special questionnaire.

Conclusions. This questionnaire makes it possible to assess the standard of living of patients using a special device at the stages of rehabilitation.

Compliance with oral hygiene is an important aspect of the prevention of dental diseases. But an uncontrolled choice, the use of improperly selected home hygiene products can lead to a number of complications, for example hyperesthesia of dentin. An important aspect of the choice of home hygiene products is their effect on the hard tissues of the tooth.

Aim. To study in the experiment the effect of a hard toothbrush with a high level of abrasiveness of a toothpaste on the change in the enamel surface according to profilometry data.

Materials and methods. Using the device for cleaning teeth, a study was carried out on the roughness of the surface if the enamel of the sample. In research were used the first 3 molars removed for periodontal indications, of which 3 samples of 1×1 cm were prepared. The measurements were carried out using a Senso neox profilometer (Sensofar) with a 3D magnification of 150 at the following time intervals: initial condition of the tooth, 1 week, 1 month, 6 months, 1 year.

Conclusion. When using a hard toothbrush together in combination with a highly abrasive paste, the optimal combination time is not more than 6 months. Further, there is an increase in roughness of enamel surface.

According to the Federal State Program of Primary Prevention of dental Diseases among the population of Russia in 2011 in the age group of 35–44 years, conducted by STAR, the prevalence of periodontal diseases is high – more than 80%. The high prevalence is due to the low level of oral hygiene. In addition to the standard protocol for the treatment of periodontal diseases, dentists prescribe antibacterial mouthwashes for home use. The combination of chlorhexidine 0.05% + CITROX can act as an alternative to pure chlorhexidine. This combination contributes to less plaque formation, reduces bleeding gums and has an anti-inflammatory effect. It was also noted that this rinse aid has a more pleasant taste and less pronounced side effects.

Due to the presence of a large percentage of 42.6% secondary oral infection in children with rheumatic diseases [1, 2], which arose during long-term treatment of shock and maintenance doses of anti-inflammatory therapy, it was important to study the microbiota [16, 17]. This paper for the first time applied a modern method for assessing the microbiota of various biotopes of the affected oral mucosa in children with rheumatic diseases – chromatosis-mass-spectrometry (CMSM), based on the quantitative determination of the level of markers of microorganisms: fatty acids, aldehydes, alcohols [5, 7, 10, 11]. СMSM is a highly sensitive method with a wide diagnostic spectrum. The study of a wide range of microorganisms provides new opportunities in the diagnosis of oral dysbacteriosis and increasing the effectiveness of individual treatment. The aim of the study is to improve the level of diagnosis and treatment of oral mucosal diseases in children with rheumatic diseases, through the use of chromato-mass-spectrometry of the oral microbiota.

Relevance. Before starting the therapeutic treatment of various periodontal diseases, it should be clearly understood that a high-quality treatment is possible only with complex therapy, excluding local irritating adverse factors in the oral cavity, elimination of inflammatory processes in the periodontal tissues, as well as violations of its function. One of the main tasks of the treatment of periodontal diseases is the preservation of the dentition with a single functional system.

Purpose – to assess the use of the drug Kollapan in tooth extraction and treatment of periodontitis.

Materials and methods. The clinical observation group consisted of 40 patients aged 19 to 65 years. The gender ratio was 3 : 2 (60% men, 40% women). The largest percentage of patients (65%) came to the clinic with complex tooth extraction. The remaining 35% – with generalized periodontitis of moderate and mild severity.

Results. Clinical observation showed that in the first group of patients, whose therapy included the use of Collapan, after a complex tooth extraction, physiological healing of the hole was observed, the disappearance of inflammation within 24–36 hours after the surgery

The purpose of the study: to analyze the methods of treatment of deep caries by dentists of the Samara region.

Materials and methods. In 2021, 220 specialists of the Samara region were surveyed on the treatment of deep dental caries on the bases of budgetary and extra-budgetary organizations. The questionnaires contained 20 questions that provided information about the level of professional training of specialists, the degree of their awareness of quality criteria and standards, the use of modern technologies and the implementation of each stage of deep caries treatment. The statistical significance of the obtained results (p) was calculated using the Student’s criterion (t) and its interpretation based on the standard table of critical values of the Student’s coefficient. Spearman’s rank correlation method was used to determine the strength and direction of the correlation.

Results. The majority of dentists – 89.9% use a medical pad in the treatment of deep caries, of which 38.7% of respondents use this pad only when accidentally opening the tooth cavity. Based on the answers to the questionnaire, 77.0% of respondents prefer calcium-containing self-hardening medical pads and only 4.6% use MTA-based pads. A comparative analysis of doctors with rare early complications and doctors with frequent early complications showed that doctors of the second group apply a medical pad when opening the tooth cavity 25% more often than doctors of the first group when performing necrectomy in full volume in both groups. A comparative analysis of doctors with rare late complications and frequent late complications did not reveal a statistical significance between the imposition of a medical pad and the opening of the tooth cavity during a complete necrectomy in doctors of the first and second groups. Complications after the treatment of deep caries may be due to an incorrect interpretation of reversible and irreversible changes in the pulp, and in this regard – incorrectly chosen treatment tactics.

Conclusion. The success of the treatment of deep carisea largely depends on the correct determination of reversible and irreversible changes in the pulp of the tooth.

Aim: analysis of medical and social characteristics and assessment of the dental status of geriatric patients with cognitive impairment.

Materials and methods. The study was carried out at the Department of Therapeutic Dentistry. We analyzed the responses and laboratory results of 43 patients aged 60–92 years. The main methods used in the study were: questioning (Fox test), sialometry, saliva pH determination, microbiological analysis (of the upper respiratory tract) for fungal microflora.

Results obtained showed that an objective study of the secretory function of the salivary glands according to the method of M.M. Pozharitskaya found that the average rate was 0.2 ± 0.004 ml/min, and the average saliva pH was 5.7 ± 0.04. The medical and social portrait of a geriatric patient indicates that mainly patients with impaired cognitive functions seeking dental treatment and prophylaxis were women, whose average age was 76.03 ± 2.8 years, as a rule, they were representatives of the humanitarian and natural-scientific professions, 75% are married. According to the results of the Fox test, it was found that 60% of patients complained of dry mouth of a different nature. The perception of dry mouth was statistically significantly dependent on gender (P = 0.025) and the presence of chronic diseases (P = 0.004). Women (OR = 1.17, P = 0.026) with chronic diseases (OR = 2.97, P = 0.002) were more likely to suffer from dry mouth.

Aim. To define the needs of patient in implantology dentistry help in depending of extent defect teeth rows beside populations living in different region of the Republic of Tajikistan.

Material and methods. In the article are presents the results determination of needs patients to implantology dentistry help in depending of extent defect teeth rows beside populations living in different region of the Republic of Tajikistan. In examined group entered dentistry patients both sexual difference with defect of the teeth rows which were divided into 3 groups: 1st group formed the 372 patients with small defect of the teeth rows (absence 1–3 teeth); in 2nd group entered 783 examined patients with average extent (absence 4–6 teeth) of the defect of teeth row; 3rd group formed 109 patients with greater defect of the teeth rows (absence more than 6 teeth). For the reason studies of extent defect teeth rows organized clinical and epidemiological examination of the orthopedic status in different territorial-administrative zone.

Results. Amongst examined persons in respect of defect of the teeth rows by small extent exists reliable reduction their prevalence on measure of the increase the age, then comparatively occlusion defects with average and big extent noted reliable increase of the factor of prevalence.

Conclusions. Got material allow to improve rendering of implant’s prosthesis in depending of extent occlusion defects and hereinafter completely shorten the risk of invalidation chewing device.