This article presents the analysis and systematization of the data presented in literature devoted to the study of condition of periodontal tissues in case of localized periodontitis in people of different age groups, treatment methods of localized periodontitis of moderate severity. The article also provides ideas on the subject and highlights the trends of possible research.

— High-resolution microfocus computed tomography performed on a Skyscan 1176 (Bruker) device was used to study morphological features of the canal-root systems of the upper jaw first molars in residents of the European part of Russia. An analysis of coronal, axial and sagittal sections of 134 upper jaw first permanent molars removed for medical reasons revealed variations in the canal-root system structure. In 85.8% of the cases, the first upper molars had three separate roots: two vestibular and one palatal; in 14.2% of the cases the roots make up different fusions. The palatal root bent in the buccal direction in 52.9% of the cases, while the mesiobuccal root bent in the distal direction in 87.9% of the cases. The greatest variety of curvatures was observed in the distal-buccal root: towards the mesial side — in 28.3% of the cases, another 21.6% of cases being curved towards the distal side. The palatal root in 90.3% of the cases had one canal; 9.7% of the cases featured two canals, while the distal-buccal root in 73.9% of the cases had one canal, and two canals — in 26.1% of the cases. In 89.6% of the cases, the mesiobuccal root had two canals; in 10.4% of the cases — one canal. The mesiobuccal root of the first upper molars was of an oval shape, elongated in the vestibular-oral direction, the most common structures being those of Type IV (43,3%), II (25.4%), III (8.2%) and VI (7.4%) by F. J. Vertucci. The occurrence rate of extra types of root canal structure was 7.4%.

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The diagnostics and treatment of malocclusion Class III in patients aged 6-12 is an vital problem in orthodontics. Method of orthodontic treatment of malocclusion Class III in patients with the help of improved and patented orthodontic construction - 'Postnikov appliance' - and face mask and bracket system is analysed in the article. Orthodontic treatment of malocclusion Class III was examined in 24 patients aged 6-12 by the suggested method. All patients were examined clinically and with the help af additional diagnostic methods: head cephalometry in lateral position with further data analysis in Dolphin Imaging (USA). The use of computer technologies in Dolphin Imaging helps to controll the process of correction of dentition correlation in different stages of treatment, to reduce the period of treatment of malocclusion Class III in patients aged 6-12 and to improve face esthetics and life quality ratio.

Subject of the study: to identify the relationship between the quality of life in patients with chronic generalized periodontitis and moderate periodontal disease with indicators before and after periodontal treatment. Objective: to determine an integral assessment of the quality of life in patients with chronic generalized periodontitis and moderate periodontal disease before and after traditional periodontal treatment and with the use of new technologies. Methodology. The study involved 120 patients aged 45-65 years with a diagnosis of chronic generalized periodontitis and moderate periodontal disease. The patients were divided into 2 groups: the main group (60 people) and the control group (60 people). The integrated assessment related to dental health was determined based on the questionnaire for determining the "dental health impact Profile OHIP-14"index. Patients of the main and control groups completed the questionnaire 3 times: before treatment, 6 and 12 months after treatment. Results. Periodontal treatment with the use of new technologies in patients with chronic generalized periodontitis and periodontal disease of moderate severity showed an improvement in 3 main indicators of the quality of life level for the problem with food intake, the problem in communication and the problem in everyday life. Conclusion. The use of directed tissue regeneration and the method of carboxytherapy for local treatment in patients with moderate periodontal disease in the main group compared to traditional treatment showed a significant positive dynamics of subjective signs. Reducing the clinical manifestations of diseases allowed patients to lead a full life, without experiencing the inconvenience associated with eating and communicating with people.