P.G. Dauge is a scientist, person, personality

The study is devoted to the professional and social activities of the outstanding domestic dentist, founder of the still existing journal "Dentistry" (formerly "Odontology"), Honored Worker of Culture of the Latvian SSR, Doctor of Medical Sciences Pavel Georgievich Dauge. The article presents the life path of P.G. Dauge, noted for his activities as a professional revolutionary, doctor and prominent organizer of dental care in our country. It was emphasized that the professional and social activities of P.G. Dauge was very clearly manifested in the position of head of the dental subsection of the People's Commissariat of Health of the RSFSR, which he took exclusively on the recommendation of V.I. Lenin. It is noted that it was P.G. Dauge was one of the first Soviet dentists who advocated and strongly recommended that all territorial and departmental health departments carry out planned oral sanitation for children, as well as for some categories of adults. The personal qualities of P.G. Dauge as a person and a citizen.

Stafne's Defect: a case report

The article reports on the clinical case of a patient with a diagnosis of "Stafne cyst", who was treated in the oncology department No. 8 of the Pavlov PSPbSMU. The features of differential diagnosis and diagnostic measures necessary to clarify the diagnosis are given. The situations when it is possible to avoid additional traumatic tests, as well as indications for the choice of surgical intervention or the possibility of refusing it, are analyzed. The presented data can be useful when creating algorithms for the diagnosis and treatment of a Staph cyst and making recommendations on the timing of treatment.

Myofunctional parameters in patients using full removable dentures with progenic and prognathic ratio of the anterior segments of the edentulous jaws

The aim study was to construct artificial dentitions based on the method of mathematical modeling with the progenic and prognatic ratios of toothless frontal segments and to analyze the functional activity of the masticatory muscles in patients using dentures made in this way, compared with standard prosthetic structures. To compare and interpret the data obtained, electromyographic studies were performed in the control group (16 people), whose teeth were made using the traditional method, and the main group (22 people), whose artificial teeth were formed according to individual mathematical calculations, taking into account the size of the sagittal gap of the frontal segments of the progenic and prognatic ratio of toothless jaws. Statistical processing of the results of the electro-myographic study was carried out using the Statistica application software package. The digital data were processed by the method of variational statistics using the Student's t-test. The analysis of the obtained data showed the advantages of using individual mathematical calculations when solving the issue of tactics for constructing dentitions in the frontal segment of toothless jaws, taking into account the degree of the sagittal gap in the progenic and prognatic correlation of the jaws and their possible combinations.

Clinical and laboratory studies of the effectiveness of a non-invasive method of treating caries in the stage of white chalky spot with Icon technology

The aim of the study was to evaluate the effectiveness of a non-invasive method of treating caries at the stage of a white chalky spot with the Infiltration Concept (Icon) technology. Materials and methods: the clinical and laboratory study included 5 teeth with caries in the white spot stage, removed according to orthodontic indications. The study included scanning in an X-ray computer microtomograph of selected samples of teeth with caries in the white spot stage before and after treatment of the caries area according to Icon technology. For each sample, 1601 X-ray projections were obtained, which were then reconstructed using the XRM Reconstructor software. The comparison of the mineralization density of the samples was carried out by calibrating the obtained images, reconstructing three-dimensional models of tooth samples and constructing maps of the mineralization fee. Results and conclusions. Data on the mineralization density before and after treatment according to Icon technology were obtained in the following areas of the studied teeth: caries in the white spot stage; dentin bordering on caries (the area touches the dentinoemal border as close as possible to the caries area); the area of healthy enamel on the opposite side of the tooth; dentin bordering on healthy enamel (near the dentinoemal border and as close as possible to the healthy enamel area). A comparison of the results obtained does not allow us to conclude about the effectiveness of treatment according to the Icon technology. Moreover, the mineralization density of the studied areas significantly decreased after the treatment.

Results of studying the state of periodontal tissues in children with visual diseases living in Krasnoyarsk

The article is devoted to studying of periodontal tissues in children with sensory deprivation of vision and conventionally healthy children in the city of Krasnoyarsk. A clinical examination was performed for children with impaired vision from special (correctional) remedial educational institutions type III and IV for blind and visually challenged children aged 5—18. The hygienic condition of the oral cavity was evaluated using the hygiene index by Fedorov-Volodkina, while the severity of gingivitis was studied via the papillary marginal alveolar index (PMA). The condition of periodontal tissues was assessed based on the complex periodontal index (CPI). Comparative assessment of the data obtained from children with sensory deprivation of vision and conventionally healthy children was carried out. The children with vision pathology were revealed to have the highest frequency of periodontal tissue diseases as well as a higher risk of such diseases than that in the conventionally healthy children, which shows the necessity of individual preventive dental procedures for this category of subjects.

The effect of various modifiers on the course of periodontitis

The purpose of the work is to establish the degree of influence of various modifiers on the course of chronic generalized periodontitis. We examined 83 periodontal patients. During the examination, in addition to the obligatory volume, data on somatic burden and dependence on smoking were included with the determination of the number of cigarettes smoked per day. Bleeding of the gums was determined in the area of all teeth. To determine the rate of progression of periodontitis on the basis of orthopantomogram data, an indirect indicator was calculated — the decrease in the alveolar bone in relation to the patient's age. It was established by the research that the modeling of periodontitis, with an identical hygienic state of the oral cavity of patients, is affected by concomitant somatic pathology, especially diabetes mellitus, making the course of periodontitis worse; and also a bad habit — smoking, which contributes to more pronounced vascular changes in the periodontium in patients with clinical manifestations of periodontitis. Recommendations are given to take into account the concomitant pathology of internal organs and the degree of dependence of patients on tobacco smoking when planning periodontal treatment, in order to correct these risk factors and motivate the patient to cooperate with a doctor.

Algorithm of diagnosis and treatment of patients with distal occlusion in the period of replacement bite

The purpose of the work is to establish the degree of influence of various modifiers on the course of chronic generalized periodontitis. We examined 83 periodontal patients. During the examination, in addition to the obligatory volume, data on somatic burden and dependence on smoking were included with the determination of the number of cigarettes smoked per day. Bleeding of the gums was determined in the area of all teeth. To determine the rate of progression of periodontitis on the basis of orthopantomogram data, an indirect indicator was calculated — the decrease in the alveolar bone in relation to the patient's age. It was established by the research that the modeling of periodontitis, with an identical hygienic state of the oral cavity of patients, is affected by concomitant somatic pathology, especially diabetes mellitus, making the course of periodontitis worse; and also a bad habit — smoking, which contributes to more pronounced vascular changes in the periodontium in patients with clinical manifestations of periodontitis. Recommendations are given to take into account the concomitant pathology of internal organs and the degree of dependence of patients on tobacco smoking when planning periodontal treatment, in order to correct these risk factors and motivate the patient to cooperate with a doctor.

Prevention of complications of iatrogenic transient bacteremia in dental practice

The aim of the work was to develop an algorithm of anti-microbial chemotherapy for the perioperative prevention of local inflammatory complications. To clarify the data on possible pathogens of postoperative local inflammatory complications, the authors conducted their own microbiological studies to determine the microbiome of an operating wound under the conditions of aerobic and anaerobic cultivation of inoculum with subsequent identification by a complex of morphological, cultural and biochemical properties. Periodontal pathogens were identified by PCR. The microbiome of the surgical wound was analyzed for conditionally clean wounds (group 1 — 61 patients after dental implantation surgery), infected (group 2-41 patients with a diagnosis of pericoronitis, difficult eruption of the wisdom tooth) and contaminated (group 3 — 42 patients after cystectomy, granulomectomy). Based on the literature data and the results of our own research, an algorithm of antimicrobial chemotherapy (prevention) for outpatient operations in dental practice has been developed. The algorithm includes the most commonly used drugs by dentists, taking into account the microbiota of the postoperative wound, the sensitivity of pathogens to antibiotics, and the duration of treatment courses.

Inflammatory complications in the state of peri-implant tissues and their causes according to the results of a survey of dentists

The causes of mucositis or peri-implantitis may be insufficient oral hygiene, overload of implants. Recently, the attention of implantologists has been drawn to the design of the abutment connection node with the implant, which is able to accumulate the microflora of the oral cavity and maintain inflammation in the gum. The purpose of this work was to find out the opinion of dentists about the causes and methods of prevention of mucositis and peri-implantitis based on the results of many years of experience in prosthetics on implants. At the Department of Clinical Dentistry and Implantology of the Academy of Postgraduate Education of the FMBA of Russia, a survey was conducted of 48 orthopedic dentists who had at least 5 years of experience working with dental implants. The questionnaire contained 15 questions about the causes of peri-implant inflammation and its prevention methods. The above results of the questionnaire contain data on the frequency of use of 11 implant systems used in Russia; the detectability of inflammation in peri-implant tissues, bone resorption and gum recession when using various implant systems; the causes of inflammation in periimplant tissues; the role of the implant-abutment junction node. According to the results of the questionnaires, the importance of personal and professional hygiene in the care of installed implants was particularly noted, as well as the advantages of a deep cone connection of the abutment with the implant for the prevention of inflammation.

Prevention of complications of iatrogenic transient bacteremia in dental practice

The aim of the work was to develop an algorithm of anti-microbial chemotherapy for the perioperative prevention of local inflammatory complications. To clarify the data on possible pathogens of postoperative local inflammatory complications, the authors conducted their own microbiological studies to determine the microbiome of an operating wound under the conditions of aerobic and anaerobic cultivation of inoculum with subsequent identification by a complex of morphological, cultural and biochemical properties. Periodontal pathogens were identified by PCR. The microbiome of the surgical wound was analyzed for conditionally clean wounds (group 1 — 61 patients after dental implantation surgery), infected (group 2-41 patients with a diagnosis of pericoronitis, difficult eruption of the wisdom tooth) and contaminated (group 3 — 42 patients after cystectomy, granulomectomy). Based on the literature data and the results of our own research, an algorithm of antimicrobial chemotherapy (prevention) for outpatient operations in dental practice has been developed. The algorithm includes the most commonly used drugs by dentists, taking into account the microbiota of the postoperative wound, the sensitivity of pathogens to antibiotics, and the duration of treatment courses.