THE EFFECT OF MONOMER OF REMOVABLE DENTURE BASE RESIN ON THE STRUCTURAL ORGANIZATION OF THE GLANDULAR ZONE OF ALBINO RAT HARD PALATE IN THE EXPERIMENT.

OBJECTIVE: The aim: The paper presents the findings of the study of the 3 month-long effect of the monomer of the "Ftorax" denture base acrylic resin on the structural organization of the mucous membrane and the condition of the salivary glands of the albino rats' hard palate during the experiment. PATIENTS AND METHODS: Materials and methods:To achieve this goal, experimental studies involved mature rats, whose hard palate mucosa was smeared with 2% aqueous solution of the monomer of the "Ftorax" denture base acrylic resin twice a day in the morning and evening. The animals were sacrificed on day 30 of the experiment and following 3 months. RESULTS: Results: The findings of the studies of the structural organization of the mucous membrane and the analysis of the micropreparations of the mucous membrane of the hard palate of the animals of Group III have revealed substantial pathological changes both in the covering epithelium and in the lamina propria. The comparison between the intact animals and group of animals subjected to the 3 month-long effect of the monomer showed a significant thickening of the epithelial layer; a decrease in the mitotic index in the basal layer; impaired stratification of the cellular elements of the spinous layer; manifestations of exudative purulent inflammation, cystic and sclerotic changes in the excretory ducts; increase in the amount of connective tissue in the lobules of the salivary glands; decrease in the volume of the secretory parenchyma. CONCLUSION: Conclusions: Based on the findings of the study we can conclude that the prolonged effect of the monomer of the denture base acrylic resins leads to disorder of the structural organization of the glandular zone of the hard palate; in its submucous layer the total volume of the salivary glands decreases, which, in turn, significantly reduces secretion and leads to hyposalivation.

Consideration of childhood psychological factors at dental appointment.

OBJECTIVE: Introduction: Paediatric dentistry is a special field of dental practice. The scope of professional activities within this field covers not only high level of expertise and technical skills tailored to the needs of young patients, but requires searching and creating positive psychological environment and communicative management of each child in order to improve daily service methods. The aim of this study is to identify and describe the main psychological characteristics of the age developmental periods of child's personality that dental professionals should regard dealing with the paediatric patients. PATIENTS AND METHODS: Materials and methods: The study involved 124 paediatric participants aged 2,5 - 15 years, who were referred to get specialized dental care at the Department of Paediatric Dentistry at the Municipal Paediatric Dentistry Hospital, Poltava. We have collected and identified behavioural patterns of children of all age groups during their contacts with dentists at the dental offices as well as studied the characteristics of childhood psyche age periods through the available literature. The data obtained were thoroughly As a result of the analysis of the obtained data, the principles for managing paediatric patients' behaviour at the dental office have been elaborated and introduced into the practice. RESULTS: Results: Outer evaluation of the children's activities performed is perceived by children as an assessment of personality, so any negative doctor's remark can provoke anxiety, irritability, and discomfort, apathy. Therefore, the paediatric specialists should remain attentive to physical and emotional indicators of stress when dealing with young patients. CONCLUSION: Conclusions: Hence, among the key tasks of a paediatric dentist is to create the friendliest and most comfortable conditions for small patients, where they have the opportunity to play toys and receive little gifts for patience and courage.