EXPERIMENTAL STUDY OF CHANGES IN THE CHEMICAL COMPOSITION OF TOOTH ENAMEL WHEN USING HYDROGEN PEROXIDE AS THE MAIN CHEMICAL COMPONENT IN PROFESSIONAL BLEACHING.

OBJECTIVE: The aim: To study changes in the chemical composition of the tooth enamel surface when using hydrogen peroxide as a chemical component of the whitening system in combination with professional oral hygiene. PATIENTS AND METHODS: Materials and methods: To achieve this goal, during the study, we studied the enamel of the teeth of the frontal area, which was removed for orthodontic and orthopedic indications. The age of the patients whose teeth were examined ranged from 18 to 44 years. In the experiment, we studied the chemical structure of enamel by a method thatcovered the selection of the study area, with the designation of areas for microanalysis, and subsequent elemental analysis in selected areas of the enamel. RESULTS: Results and conclusions: Analyzing the results of this study, we can make assumptions about the impact of professional dental hygiene on the procedure of photo-whitening teeth based on 35% hydrogen peroxide gel and its subsequent impact on theother clinical indicators, which will depend on the characteristics of functional and structural resistance of the enamel.

Features of physical and mechanical parameters of acrylic plastics after fullerene coating.

OBJECTIVE: The aim of the research is to study the physical and mechanical parameters of the bases in removable laminar dentures after modification of their surface. PATIENTS AND METHODS: Materials and methods: the studied samples were divided into two groups (group I - acrylic plastics, and group II - acrylic plastics with fullerene С60 nanocoating), 50 samples in each group. The coefficients of water absorption, water solubility, microhardness and deformation characteristics of materials were studied. RESULTS: Results and conclusions: The material covered with fullerene С60 has a lower coefficient of water absorption and water solubility, which amounted to 0.55% and 0.23% respectively, from the initial weight of samples, as compared with acrylic plastics without coating (0.71% and 034%, respectively). The strength parameters of samples of group ІІ were higher by 13.5% as compared to group І. The given results of water absorption and water-solubility show that acrylic plastics with fullerene С60 molecules coating has a lower coefficient of water absorption and water solubility, in comparison with acrylic plastics without coating. This indicates a higher degree of resistance to biodegradation of the modified surface material, in turn reducing the washing-out of residual monomer from the denture, which directly improves the strength parameters of the acrylic plastics and can prevent the development of denture stomatitis.

Analysis of the mortality rate among the population of the poltava region and the ways of its reduction.

OBJECTIVE: Introduction: Saving and improvement of population' health is one of the main priorities of the policy in any country. Studying of the level and causes of mortality is a powerful tool for assessing the effectiveness of health care systems. WHO recommends using of the European classification of preventable causes of death that based on three levels of prevention. PATIENTS AND METHODS: The aim of this study is to compare the level and structure of mortality of the population of Ukraine and the Poltava region, to substantiate scientific approaches to the study and identification of those causes of death that can be prevented in order to formulate prevention programs at different level. Materials and methods: In research are used the information from the State Statistics Service of Ukraine and from the Center for Medical Statistics of the MoH of Ukraine. RESULTS: Review: Despite the positive dynamics of mortality in recent years, both in the Poltava region and in Ukraine, the indicators remain extremely negative. About 73.3% of all fatalities in Ukraine are three main types of causes cardiovascular diseases, external causes of death and neoplasms. In the Poltava region, 70.56% of all causes of death are due to cardiovascular disease; neoplasms occupy 13.88%; external causes - 4.87%; diseases of the digestive system - 3,06%; respiratory diseases - 1.31% of the causes of death. CONCLUSION: Conclusions: The mortality rate both in the Poltava region and in Ukraine has tendency for declines, but remains rather high. General trends in the structure of causes of death: in the first place are diseases of the cardiovascular system, the second - neoplasms, the third -external causes. Structuring of the causes of death that based on the principle of prevention in Ukraine do not conduct.

Planning of effective evaluation of the activities of hospital district at the example of poltava region.

OBJECTIVE: Introduction: Increasing of the availability and quality of health care in rural areas is one of the priority directions of public health and regional development policy. The need for reforming of the network of secondary health care facilities is due to the fact, that they are unable to meet the needs of the population in this specialized type of medical care in the conditions of the existing structure and funding system. The aim: to analyze the existing legislation regulating the establishment and operation of hospital districts; to determine the methodology for monitoring and evaluating of the activity of the hospital district on the example of the Poltava region. PATIENTS AND METHODS: Materials and methods: In this work a set of methods is used: system approach, bibliosemantic, legal, logical modeling. RESULTS: Review: A managerial tool capable of tracking the process and demonstrating the impact of projects, programs and development policies is monitoring and evaluation. The basis of evaluation is the creation of different indicators and indexes. The system of these indicators provides an opportunity to assess the social, medical, economic and environmental aspects of development of hospital district. The monitoring and evaluation program should include monitoring of implementation (contributions and activities) and monitoring of the results of work of the hospital districts (short-term and long-term). CONCLUSION: Conclusions: Hospital districts are created with the aim of optimizing of the organization and functioning of the network of health facilities. The Management Board's decision should be based on valid, reliable information on the development of the hospital district. Compliance with the monitoring and evaluation methodology makes it possible to provide the health care system with qualitative and timely data at all stages of its reformation.