The article investigates the effectiveness of chemical treatment of root canals. In an experiment conducted on 52 root canals of 37 extracted teeth, the effectiveness of the method of laser fluorescence diagnosis (LFD) for endodontic treatment was confirmed. There have also been found most effective antiseptic preparations used for chemical treatment – 3% hydrogen peroxide, nitric oxide treated 3% hydrogen peroxide in combination with 5% sodium hypochlorite. An algorithm for applying the method of LDF during mechanical and chemical treatment of root canals is suggested.

Climatic and geographical features of the Russian Far East are characterized by increased humidity, high winds, low temperatures, significant oscillations in the magnetic field, a low content of microelements in water, especially fluorine (0,11-0,5 mg / l). At the same time the amplitude of the annual temperature fluctuations in the North is about 98-104ºC. A large area of the territory, and remoteness of the settlements, difficult transport scheme and the lack of professional dental professionals in some regions create difficulties in the organization of a dental care. The authors carried out a comparative analysis of the frequency and structure of the dental diseases in different age groups of local and migrant adult population of the Far East. In the Khabarovsk region were conducted a comprehensive dental examination of 1161 logical people (553 men, 608 women) of the local population (group 1) and 1000 (534 men, 466 women) who came from different regions of Ukraine, Belarus and Russia (group 2) with the experience of staying at least three years. In the Republic of Sakha (yakutia) survey was conducted among 855 people. The prevalence of caries in group 1 averaged 97,59 ± 0,45%, in the second group 92,6 ± 0,828%. Average DMFT index was 9,55 ± 0,32 in the 1st group and 2 - 7,07 ± 0,26 in the second one. This paper presents data and other dental diseases. The results indicate a high level of the prevalence of dental disease and the intensity of the population of the Far Eastern federal district, which dictate the need to develop and implement a comprehensive regional program to improve the provision of medical dental care and prevention of dental pathological processes of organs and tissues of the mouth, and oral and maxillofacial field.

In the article the results of medical and sociological research, conducted with a view to assessing the Endodontic treatment of chronic periodontal disease apical permanent teeth with incomplete formation of roots of children's dentists, pediatricians, residing on the territory of Russia and CIS are stated. In this connection, an anonymous questionnaire survey of 255 children's dentists was conducted in omsk, St.-Petersburg and Minsk. These cities were selected as economically stable, which have got their own large medical universities with dental faculties. As a result of questioning revealed significant differences in the provision of dental care for children's population in different cities of Russia and CIS countries on the use of means and methods for the treatment of chronic apical forms of periodontal disease.

The article presents an overview of the literature on the problem of combining lesions of the oral mucosa of patients with diagnoses of eating disorders and chronic diseases of the digestive system as related. The features of the influence of somatic pathology on the nature and severity of pathological processes in the oral cavity. People suffering from bulimia and anorexia are at risk for dental disease. Analyzing the cause and effect of diseases of the mouth and gastrointestinal tract, most authors have found that the pathology of the digestive system often precedes the appearance of dental diseases. Identified oral lesions have a clear correlation with the degree of damage to internal organs.

In this article described the modern concepts about pathomorphogenesis of the lesions apical tissue and interdental bone of septa. Emphasized the dominant hypothesis of tubular paths penetration of odontogenic infection in the system endodont – parodontium. Presented results of own researches study of the density dentinal tubules in the middle and apical thirds of root canal. Shown the changes in the density of dentinal tubules by vasodentine to dentin of pericementium zone.

The aim of this research was the study of registered in the root canal and periapical tissues of permanent teeth with children’s incomplete root development, chronic periodontal disease and its exacerbation in children residing in a major industrial center of Western Siberia (omsk). We observed 33 patients aged 6 to 13 years, 16 patients were diagnosed with chronic periodontitis in the acute stage, the remaining children - chronic apical periodontitis. Microbiocenosis periodontal complex in the state of complicated caries in primary school children showed the diversity of the microbiota of both the prokaryotes (aerobic, anaerobic, microaerophilic, facultative anaerobic bacteria), and to eukaryotes (yeast-like fungi of the genus Candida).

Within the domain of forensic medical examinations for civil cases of the damage caused to health by providing medical services discussed issues of its destination. In recent years the Russian Federation has multiple growth complaints about quality of medical care, which is caused primarily by changes in the law in the direction of securing priority of rights and freedoms in the field of health. The subject of forensic examination for civil cases of the damage caused to health by providing medical services is to establish the extent to which professional medical care supports needs of the patient. Legal assessment of facts is the prerogative of the court and subject to forensic examination does not apply. For example, the establishment of guilt is a function of the court and not a function of the forensic examination. This also relates to the recognition proper or improper quality and safety, as well as the establishment of a lack of quality or safety of the object, etc. A forensic examination is intended to describe the actual circumstances with expert medical point of view, and to give them a legal qualification the only court can do.

Restoration of bone lesions in the area of periapical destruction in patients with chronic periodontitis remains a pressing problem of modern dentistry. Under the supervision of the authors 296 teeth of 230 patients were treated. Endodontic treatment for all patients was conducted in full accordance with generally accepted standards. In the study group patients before the filling of channels in the area of periapical bone destruction be output osteoplastic material (freeze-dried autobone and β-tricalcium phosphate), which resulted in improved outcomes for observations in the period up to 3 years.

This article presents a calculation of the most aggressive zones of pressure of interlocking systems with rigid and semi-rigid locking system on the roots of the abutment teeth. Zones of maximum tension in the supporting teeth, as well as at the top of the top of the core inlay are indicated. Practical recommendations for the preparation of the first abutment tooth for core inlay are given, which eliminate aggressive expansion of the tooth channels. Gentle endodontic treatment will increase the diameter of the root wall in preparation for core inlay and to prevent breaking off the distal wall of the root. The most marked areas of tension of structures at making the combined prosthetics with a rigid system of fixed prostheses arise in the joint area of the castle with partial dentures. The use of semi-rigid fixing system eliminates the bending moment in the joint area of the locking system.

In this article results of research on adhesion of two types of root sealer to a surface of root channels after their temporary sealing by preparations of hydroxide of calcium are presented. In research sealers on the basis of epokside pitch and zinc oxide eugenol used. Also calcium hydroxide applications on a water-soluble and oil base used. For the first time the method by determination of adhesive durability is used. Found that the highest values of shear adhesion strength to samples, sealed by eugenol zink oxide paste, suggesting a stronger connection with the surface of the dentine.

By means of the table of definition of expressiveness of odontological signs including 23 parameters developed by us, it was investigated 188 of the upper first premolars at persons of young age. That allowed to reveal degree of expressiveness of the key anatomic parameters for definition of average and anatomic odontological norm. Average and anatomic odntological norm compared to options of a modeling of various firms from a Cerec 3D system database. on degree of expressiveness of odontologichesky signs the modeling of Physiodens posteriors firm (Austria) coincided only. The obtained data are important for considering at restoration of the first премоляров the top jaw at persons of young age. Results of research 188 of the maxillary first premolarsof young age, allowed to reveal degree of expressiveness of the key anatomic parameters and to define average and anatomic odntological norm with CEREC 3D system for optimization of prosthetic treatment of these teeth.

Dental radiographs used in endodontic therapy are two-dimensional (2D) and do not provide full information on the tooth cavity. In recent years the investigation of patients with disorders of the teeth and jaws are increasingly using dental computed tomography. When comparing the anatomical topography of the tooth extraction and its image into 3D CT revealed that the topography of the root canal is transferred reliably enough to make a decision on the choice of the method of preparation and obturation. Investigated tooth removed and created endodontic access. Extracted tooth was treated by the procedure, which can make it transparent. The proposed method of visualization of the root canals of teeth makes possible a detailed analysis of the anatomy of the root canal, while maintaining its anatomical shape and size, which is important in the learning process.

Factors that affect the dental care quality were studied in city dental out-patient’s clinics. Clinical and sociological methods of research were used. Two hundred dental medical records were analyzed to evaluate oral health condition. Study results provide the assessment of the level and quality of dental care as well as factors affecting them.