Aim. Using the method of questionnaire survey of dentists to assess their awareness of the current problems of modern practical therapeutic dentistry.

Materials and methods. The analysis of the results of a survey- questionnaire of 376 practical dentists, who is practicing a therapeutic dentistry (dentists with legal certificates in fields: ’’therapeutic dentistry” or "general practice dentistry"). Questioning of 238 dentists (63.3%) was carried out in person, questioning of 138 dentists (36.7%) was carried out remotely using the stomweb.com network resource.
Results. Significant differences and contradictions in approaches to the implementation of key dental procedures were revealed: aesthetic restoration of anterior teeth, restoration of the contact surfaces of posterior teeth, adhesive preparation, therapeutic tactics for deep caries and reversible forms of pulpitis, approaches to the diagnosis and treatment of cervical non-carious dental defects, preparation tactics cavities, the use of intracanal pins in the restoration of endodontically treated teeth, attitudes towards teeth whitening, fluoride-containing toothpastes and electric toothbrushes, etc.
Conclusions. The data obtained indicate the need for targeted scientific research, further trainings on a hans-on courses, addressing several studied issues, based on the principles of evidence-based medicine, as well as the expediency of reforming the education system for dental professionals in order to limit the dissemination of information that does not have scientific justification and/or evidence base.

Aim. To assess the need for repeated endodontic treatment and to determine the possible reasons for the repeated revision of the root canals according to the archival material of the state polyclinic in the period 2015-2020.
Materials and methods. Archival data of the registry of the state polyclinic in the period from 2015 to 2020, containing information on repeated endodontic treatment, namely: data on the treatment of patients and the condition of their teeth with apical periodontitis on the admission of CHI, repeated revision of root canals, method and means of mechanical and drug treatment of canals, filling material before and after the revision of root canals, X- rays at all stages of treatment with their description. In accordance with the purpose of the study, descriptive statistics were carried out, the data that were obtained as a result of processing information on the material of the archive of the dental clinic were analyzed and described, absolute frequencies and their proportions were indicated, which are shown in the diagrams, it was done in the Microsoft Excel program.
Results. In 505 teeth (54%), the root canals were obturated with resorcinol - formalin paste, most of the root canals of the teeth - 373 (40%) were sealed at half their length, on sighting radiographs in 80% of cases an expansion of the periodontal gap was revealed, in addition to destructive changes in bone tissue, basically all cases were treated under a temporary calcium- containing paste, 4% of the root canals of the teeth (35) were not obturated with permanent material, due to the absence of patients, 5 teeth (0.5%) underwent surgical treatment. Of all the cases identified, only 1% (10 cases of repeated endodontic treatment) have information about long-term results, which are positive.
Conclusions. Thus, a complex of factors contributes to the occurrence of apical periodontitis, and the selection of one of them, as the main one, will not solve the problem of this complication. Dentists - therapists should focus their attention at each stage of primary and/or repeated endodontic treatment, adherence to the irrigation protocol, mechanical treatment of root canals, high- quality obturation, and most importantly, motivate patients to follow- up visits and control long-term treatment results through computed tomography and control sighting pictures.

Aim. To study the prevalence, intensity and features of the clinical course of caries in children from 1 to 5 years old, to improve the registration of dental morbidity.
Materials and methods. An epidemiological and clinical examination of the child population was carried out as part of preventive medical examinations of minors. The study involved 1930 children from Moscow, aged from 1 to 5 years. The epidemiological survey was carried out to study the dental morbidity in children of early childhood and preschool age. Clinical research methods were carried out to determine the dental status of the subjects. All studies in children were performed with informed voluntary consent. Parents or legal representatives signed their consent to the survey. 
Results. Analysis of the results of preventive medical examinations of minors made it possible to determine the prevalence, intensity and characteristics of the clinical course of caries in the period of early childhood (preschool period) and preschool age among the children's population of Moscow.
Conclusions. It was found that the prevalence and intensity indicators increase as children grow up, the depth of the lesion and the localization of carious lesions change at different age periods.

G-Coat Plus is a nano-filled, self-adhesive light cured protective coating that strengthens, protects and enhances glass ionomer restorations. The effect of G- Coat plus on different GICs have not been studied comprehensively. Hence the study was conducted to compare the effect of resin coating on surface hardness and Shear punch strength of newer modified GIC.
Materials and methods: 120 samples of three GICs i.e. Fuji IX Extra, Fuji IX Fast, Fuji II LC were prepared using specialized metal moulds. Specimens of Fuji II LC were light cured for 20 seconds. Coated and uncoated samples were tested for surface hardness and 30 samples were tested for shear punch strength. P < 0.05 was considered as significant. 
Results: Shear Punch Strength after G-Coat plus coating was significantly higher for Fuji IX Extra followed by Fuji II LC. Surface Hardness after G- Coat plus coating was significantly higher for Fuji IX Extra followed by Fuji IX Fast and Fuji II LC.
Conclusion: Surface coating by a resin agent significantly increases the surface hardness and shear strength of the GIC. Considering the above stated findings, they can be incorporated into daily clinical practice to enhance the strength and longevity of GIC.

The introduction of modified bioceramic calcium silicate- based materials into clinical practice has changed the standards and strategies of endodontic treatment. The review article highlights modern calcium silicate- based cements that are used in various areas of endodontics, including vital pulp therapy, root canal obturation, management of endodontic complications and pulp regeneration. The classifications of bioceramic materials based on their chemistry and specific use in endodontics are presented. The physicochemical and biological properties of various types of materials, as well as the features of their clinical application, are described.

The search for new, fast and non-invasive methods of diagnosing diseases of both the oral cavity and general diseases of various etiologies and their introduction into practical health care is still a priority in the field of medicine. Among the known methods of analysis of biological fluids, a special place is occupied by the study of saliva. Oral fluid analysis has a high potential in screening for various diseases, since it contains a wide range of organic and inorganic compounds. A significant number of works have been devoted to the study of the quantitative and qualitative composition of the oral fluid, as well as to the study of saliva biomarkers, however, the study of the saliva proteome is at the stage of data accumulation. The lack of standardization in the collection of samples and methods of analysis, as well as poorly studied physiological and biochemical parameters of the oral fluid, hinders the introduction of advances in the study of the saliva proteome into diagnostic practice. The solution of these problems will allow the oral fluid to be used as a biological environment for both detecting diseases and predicting their course.

Deep margin elevation (DME) is a nonsurgical, alternative technique of dental crown lengthening. Portion of direct restoration placed only at the deep apical part of the cavity to elevate the margin to a more coronal and more adequate position for final cementation of indirect restoration.
Materials and methods. In this systematic review, we were looking for in vitro studies in which deep margin elevation (DME) technique were used. The electronic databases PubMed and EMBASE were used for the search. The search began on July 29, 2021 and ended on August 10, 2021. We have analyzed the materials and methods of each research and entered them in the appropriate tables to give a clearer assessment of the obtained results.
Results. Analysis of marginal quality showed the best results when indirect restorations luted to dentin directly and with DME technique with three consecutive layers of resin composite. In groups without DME there were fewer microleakage. DME did not statistically significantly influence the fracture strength.
Conclusions. We conducted a systematic review that included 12 in vitro studies. Even though samples without DME showed better results in in vitro studies, the difference between samples with and without DME was not statistically significant. However, in clinical practice, DME facilitates the insertion of indirect restorations. Therefore, further studies and clinical observations are necessary. 

Several agents have been used to secure hemostasis during periapical surgery. Their efficacy, biological response and side effects differ from each other.
Aim. Of this review article is to assess systematically the available scientific evidence about the clinical response after using hemostatic agents during apical surgery.
Materials and methods. The study of publications was produced in the electronic databases such as Google Scholar, PubMed during a systematic review of the literature. Included articles contain information about using hemostatic agents during periapical surgery and their adverse effects. The publication date criterion was selected from January 2006 to September 2021.
Results. 55 articles were viewed during the review. After analyzing the literature for inclusion criteria, the total number of publications has become 10.
Conclusions. According to literature data, different hemostatic agents are used during periapical surgery, but there weren’t any inflammatory reactions while using calcium sulfate.

Aesthetic composite restoration is the most common method for dental hard tissue defects reconstruction. Despite the active development and use of ceramic restorations for dental rehabilitation, the introduction of new nanotechnological filling materials has opened up fundamentally new possibilities in restorative dentistry. This article represents a clinical case of direct composite restoration in teeth 25, 26 and 27 using new nanoceramic materials.

Summary. The purpose of the study. Hypertonus of the masticatory muscles is a fairly common pathology that leads to the development of parafunctional masticatory activity. At the same time, the nature of the course of the pathology becomes long-lasting, leading to irreversible consequences. Patients often do not pay attention to minor pain in the area of the masticatory muscles, so hypertonus of the masticatory muscles is diagnosed randomly. In view of the variety of clinical symptoms from headaches to the phenomena of oral stomalgia, the diagnosis of hypertension is extremely 
difficult. Also, there is currently no single algorithm for the management of such patients.
Materials and methods. In the presented scientific study, a survey of 189 patients who applied to a dental clinic for the treatment of dental caries and its complications, a professional examination was conducted. All patients were examined according to the method of diagnosis of muscle hypertonus developed by us. The methodology includes a thorough collection of anamnesis, questionnaires (PSM-25, VAS, MAS, author's methods), the use of objective research methods, including: OPTG, CT, ultrasound, the author's method of determining the degree of mouth opening.
Results. Muscle hypertonus of varying severity was diagnosed in 80% of cases, high stress level on the PSM-25 scale in 71% (135), the presence of morning pain in the area of the masticatory muscles in 55%(104). An assessment of muscle tone on the MAS scale confirmed a significant increase in masticatory muscle hypertonicity in 34% of cases. These additional methods of investigation confirmed the presence of hypertonicity of the masticatory muscles in patients with an objective clinical picture. In the study of this area, the main role is played by the clinician, only if all the diagnostically valuable information is available, it is possible to formulate an optimal treatment plan and avoid aggravation of the patient's condition due to incorrect diagnosis and treatment.
Conclusions. The application of the developed diagnostic method contributes to the random detection of parafunctional activity of the masticatory muscles at a dental appointment, as well as to the final diagnosis of masticatory muscle hypertonus. 

Relevance. Patients with maxillofacial lymphadenitis account for 3.09 % of the total number of hospitalized in specialized departments of maxillofacial surgery, and 5.7% of the number of patients with various inflammatory processes of the maxillofacial region.
Aim. Microbiological substantiation of the algorithm of antimicrobial chemotherapy for lymphadenitis and adenophlegmon of the maxillofacial region.
Materials and methods. The analysis of the results of microbiological studies and determination of the sensitivity of isolated microorganisms to antibiotics of the material from inflammatory foci in lymphadenitis and adenophlegmon of the maxillofacial region was carried out using a standard protocol of laboratory microbiological studies. Anaerobic bacteria were cultured in the HiAnaerobic System Mark III anaerostat, identification was carried out using Biochemical Identification Test Kits (Himedia Labs).
Results. The results of determining the sensitivity of the main pathogens of limphadenitis and adenophlegmon to the most commonly used antibiotics: groups of beta- lactam drugs, macrolides, lincosamides, imidazoles, teracyclines and fluoroquinolones are presented. The priorities of prescribing different treatment regimens are determined, taking into account the international classification of antibiotics AWaRe, adopted by WHO in 2018.
Conclusions. Recommended drugs of choice for various forms of lymphadenitis and adenoflegmon include combinations of amoxicillin with clavulanic acid, lincosamides (preferably clindamycin) and fluoroquinolones (ciprofloxacin), which should be combined with imidazoles in odontogenic limphadenitis and adenophlegmon (for example, tinidazole as part of the complex drug Tsifran ST).