Background: Oral Health Related Quality of Life (OHRQoL) is a significant patient-oriented outcome which should be considered in diagnostic, decision making and therapeutic process by dentists.
Objectives: To evaluate the influence of a condition of teeth, oral mucosa and dentures on the OHRQoL among patients seeking dental treatment in the University Dental Clinic (UDC) in Kraków, Poland.
Material and Methods: 250 patients took part in a cross-sectional study conducted in the UDC in Kraków. Collected clinical data included: oral mucosa and periodontal condition, number of Decayed, Missed and Filled Teeth (DMFT index), presence of dentures. Questionnaire part of the study has been based on OHIP-14 questionnaire.
Results: The condition of teeth worsened OHRQoL in following groups of patients: first-time visitors, smokers, with periodontal diseases and without oral mucosal diseases. There was a positive significant correlation between number of decayed teeth and OHRQoL related to teeth. The condition of oral mucosa significantly impaired OHRQoL in: women, patients with oral mucosal diseases and those who undergone prosthetic treatment in the last year. There was a correlation between number of missing teeth, DMFT index, age and subscale 2 of the form. The condition of dentures significantly impaired the OHRQoL in patients: who used removable dental prostheses, undergone prosthetic treatment in the last year and females. There was a positive correlation between subscale 3 of the questionnaire and number of missing teeth and DMFT index and a negative correlation with number of filled teeth within this subscale.
Conclusions: Evaluation of patient’s OHRQoL is one of important components for successful dental treatment.

The results of research on preparations of alloy Ni-B/B composite coatings produced by chemical reduction method on a carbon steel substrate are collected in this paper. The alloy Ni-B coatings were also investigated for comparative purposes. The produced coatings were subjected to a heat treatment process. The boron powder with the particles size below 1 µm was used as the dispersion phase. The structure of the coatings was examined by X-ray diffraction method. Boron powder particles as well as surface morphology and topography were characterized by scanning electron microscopy. The roughness test, microhardness and corrosion resistance by potentiodynamic method and surface wettability tests were carried out. Analysis of the chemical composition by the EDS method showed that the boron powder particles were evenly embedded in the entire volume of the coating. Ni-B/B composite coatings are characterized by higher hardness than alloy Ni-B coatings. As a result of heat treatment, the Ni3B phase crystallized, which increased the hardness of the coating material. The incorporation of boron powder particles and heat treatment reduce the corrosion resistance of coatings. All produced coatings exhibited hydrophobic properties.

Five years ago, the Act on the protection of animals used for scientific or educational purposes entered into force. It is the implementation of Directive 2010/63/ EU into the Polish legal system. During the work on the Directive, most scientists were convinced that the previous Act on animal experiments of 2005 was in line with the new EU law and only minor modifications would be necessary. Legislators, however, decided to create a completely new legal act. Already at the time of the Act's creation, the scientific community made many critical comments regarding the law. Significant discrepancies between the Directive and the proposed provisions of the Act were far more stringent, and in many places with imprecise provisions which could have resulted in difficulties in conducting research using animals. Unfortunately, most of the postulates of the scientific community were not considered at that time. What does the Act look like 5 years after its adoption? Instead of a transparent and balanced law modeled on the EU Directive, which provides real protection for experimental animals, while safeguarding the intellectual rights of animal testing units, a patch of underdeveloped, sometimes mutually exclusive provisions has been issued. Instead of raising the welfare of the animals used for research to a higher level, it significantly increased the costs of operating research units and increased bureaucracy. Instead of rationalizing the system of issuing consents for research, it has been weakened and entangled in administrative and legal disputes without the provision of basic administrative facilities. Instead of increasing the international mobility of scientists and technicians working with experimental animals, the implementation of the law created a training “system” that is not recognized in any other EU country. In the light of the 5-year experience of the scientific community and the expert part of the composition of local ethics committees, we postulate to introduce a number of significant changes to the act so that its amended version actually ensures animal protection, respect for researchers and returns to the current of European legislation.

This is response of the authors of the article published in the “Nauka” (3/2020) to the polemic note published in the issue 1/2021. In the response, authors signaled the progressive difficulties in conducting research on animals, attributed to the practices of applying the “Act on the protection of animals used for scientific or educational purposes” of January 15, 2015. The use of animals for research in accordance with the provisions of the Act of 2015 was paid for by a number of ambiguities in the interpretation of the provisions of the Act, increased official reporting without any real effect on animal welfare, and increased pressure from some non-governmental organizations, whose aim is to completely block the conduct of animal research.