Introduction. Dental caries is considered to be a modern civilization disease;however, the state of oral health negatively influences psychological and sociological relations in children which leads to feelings of discomfort from early age. Objective. The aim of study was evaluation of the association between incidence of dental caries (d 3 ft index) in preschool children from urban and rural areas, and determining the relationship between dental caries intensity and hygienic habits. Materials and Method. 844 children aged 3-6 years from the city and the countryside were examined. The survey was conducted among parents/care givers regarding dental care of children. With parents' consent, the children had a dental examination. Results. The incidence of caries was recorded at the level of 52.61%, with an average value of 4.31 on the d 3 ft index; however, for the children from the urban area this ratio amounted to 4.15, and in the countryside it reached the value of 4.7. A correlation was found between age and area of residence of the children and various components of hygienic behavior model. Conclusions. More than a half of the children had dental caries in combination with a high frequency of unsatisfactory hygiene needs. There is a relationship between oral hygiene habits and age of the children, depending on the place of residence.

Dental composites reinforced with glass fibers have a low tensile modulus and relatively low fatigue resistance. The aim of the study was to analyze the fatigue properties of a dental composite reinforced with polyaramide fibers under the influence of a cyclic, vertical load. For this purpose, we designed a thermoformable template, corresponding to the construction of adhesive bridges in the side section of the jaw. Fifty-four composite samples were made for the study. They were divided into three groups—control (K) and two experimental groups (R1 and R2). The experimental samples were subjected to cyclic fatigue using 75 N load. The number of cycles was 4690 and 20,100. The study used a three-point bending test. Statistical analysis showed a change in elasticity in groups related to the number of load cycles. The study showed that the samples from the control group required the greatest force to break in relation to those subjected to the work cycles. The maximum force in control (K) group was 738.1 N, R1—487.8 N, and R2—451.4 N. The determined algorithm showed a change in deflection associated with the increase of force value. The study did not show any relationship between the type of sample fracture and the number of load cycles.

No abstract

Objectives. Dentures, like the patient's own teeth, require the necessary hygienic procedures to keep them in good condition. The aim of the study was to analyze selected sociodemographic features, as well as awareness and hygiene behaviours in patients from the Lublin province who use fixed and removable dentures. Materials and method. The cross-sectional study material consisted of 1,200 questionnaires distributed among people residing in the Lublin province using removable or fixed dentures. The study was conducted between June 2016-June 2017 in randomly selected private dental offices providing private and National Health Fund dental services in the Lublin province to patients using dentures. Results. The majority of respondents (51.6%) disinfected their dentures, with women more often than men providing a positive answer. Almost a half (45.6%) of respondents used dentures 24 hours a day, 36.7% stored their dentures overnight in a container with liquid, 16.3% stored them in a dry container, and others (1.4%) in a different way. A manual toothbrush was indicated by 68.3% of respondents as the method they used for daily oral hygiene. Men significantly more often used other types of brushes (electric or sonic) than women. Men also more often used dental floss. Conclusions. The dentist issuing denture should provide the patient with detailed recommendations regarding its use and proper hygiene because patients' knowledge on this subject is insufficient.

No abstract

Introduction. The fashion for a tan appeared at the beginning of the twentieth century, in the era of technological progress and urbanization with medical knowledge about heliotherapy and the promotion of the tan by fashion designer Coco Chanel being a contributing factor in it. The International Agency for Research on Cancer classified the UV to the first group of carcinogens but despite these warnings the increase in exposure to UV radiation has been seen in recent years. New solariums have been created around the world so that people can enjoy a tan all year round, no matter what the weather conditions are. Aim. The aim of the study was to assess the attitudes and behaviors related to UV radiation exposure among residents of Łęczna. Material and methods. A survey conducted among 180 people inquiring about sociodemographic characteristics and attitudes and behaviours associated with exposure to UV radiation while tanning. Results. Statistical analysis of the data obtained in the study showed that the socio-demographic characteristics affect the attitudes and behaviour associated with exposure to UV radiation. Suntan is believed to be significantly more fashionable among women, people with secondary education who have no permanent relationships. Conclusion. There is a need for preventive actions and educational programs concerning the dangers of UV radiation in order to develop not only knowledge but also the correct behaviour in society.