Satisfaction of the students from the Dental Technician program at the Medical College – Varna from the organization of the practical training in the program

The organization of the practical training of dental technician students is an important factor determining the quality of the entire educational process and their future professional realization. Тhe aim of the publication is to determine the level of satisfaction of the students from the Dental Technician program at the Medical College - Varna, from the organization of the practical training in the specialty. For the purposes of the study some theoretical considerations were discussed and an anonymous survey was conducted in March 2019 through a direct individual questionnaire. The subjects of the study were 98 first-, second- and third-year students from Dental Technician program of the Medical College - Varna. In the research process we used documentary and sociological methods, graphical and comparative analysis to present the results. Upon the analysis of the results, conclusions and recommendations were made to optimize the students’ practical training structures. This publication complements and adds more to the research on the role and significance of organizing the practical training of students in the Dental Technician program

Development of dental tourism in Bulgaria

This study examines the opportunities for the development of dental tourism in Bulgaria. Dental tourism is a specific type of medical tourism, which has been developing rapidly in recent years, and in Bulgaria dental tourism has only been reflected for five or six years. Dental tourism is not affected by seasonality, it is not directly related to the availability of tourist resources and can successfully be combined with various types of tourism. These features increase its importance not only for reducing seasonality in our seaside and mountain resorts, but also for the economic "revival" of some less developed municipalities and regions. The first part of the study examines the features of medical tourism and in particular dental tourism, as well as the factors that influence the choice of a dental clinic. The second part of the representation shows the good practices of leading dental clinics in Bulgaria

Technology for Fabrication of Sports Mouthguard Using Thermoforming Technology

Dental damage to the maxillofacial area has distinct characteristics and can cause not only concomitant organ dysfunction but also impairment of hard and soft tissues. Such dental damage may be caused by various injuries, including mostly sports injuries. Practicing certain sports, such as contact sports and martial arts, can easily result in facial and jaw bone fractures. To accomplish his training goals in an injury-free manner, the athlete must be familiar with reliable means of self-protection. The sports mouthguard is a preventative device designed to reduce the force of hits and protect hard and soft tissues in the maxillary area from trauma. The aim of the present article is to present a protocol for the fabrication of a three-layer mouthguard using thermoforming technology. Despite the presented protocol being long, it does not require much time to be implemented because the manipulations it contains are relatively fast and short.

Cross-infection control in dental laboratories: an overview

In the field of dentistry, cross-infection control is an integral aspect of professional dental healthcare practice. Increasing number researchers are focusing their interest on the knowledge, attitudes and practices of dental technicians related to cross-infection control in dental laboratories, as defining good dental practice and patient and professional safety.The aim of this study is to review the publications on knowledge, attitudes and practices related to cross-infections control in dental laboratories, to establish their geographical and time range, preferred design and the instruments used.Material and methods: A search for scientific research has been conducted in the electronic databases PubMed, Research gate, Google scholar in May 2023. Keywords used included: dental laboratory, cross-infection control, dental technicians, knowledge, attitudes, practices. A search period has been set as January 2000 to May 2023.Results: As a result of the pre-established criteria, the literature overview includes 28 publications presenting cross-sectional studies from 19 countries from Europe, Asia, Africa, North and South America. Information on the knowledge, attitudes and practices related to infection control in dental laboratories was gathered through questionnaires. The size of the investigated samples varies: at the individual level - from 11 to 200 working dental technicians, from 48 to 193 dental doctors, from 15 to 400 owners / directors of dental laboratories, and at the group level - from 20 to 96 dental laboratories.Conclusion: The quality of studies of the knowledge, attitudes and practices of dental technicians related to cross-infection control in dental laboratories can be improved by covering larger samples and using standardized tools

Structure of unstable light nuclei

The structure of light nuclei out to the drip lines and beyond up to Z = 8 is interpreted in terms of the shell model. Special emphasis is given to the underlying supermultiplet symmetry of the p-shell nuclei which form cores for neutrons and protons added in sd-shell orbits. Detailed results are given on the wave functions, widths, and Coulomb energy shifts for a wide range of non-normal parity states in the p-shell.Comment: 21 pages, to appear in Nuclear Physics

Resonant behaviour in double charge exchange reaction of \pi^+ mesons on the nuclear photoemulsion

The invariant mass spectra of the $pp\pi^-$ and $pp$ systems produced in the double charge exchange (DCX) of positively charged pions on photoemulsion are analysed. A pronounced peak is observed in the $pp\pi^-$ invariant mass spectrum, while the $M_{pp}$ spectrum exhibits a strong Migdal-Watson effect of the proton-proton final state interaction. These findings are in favor of the $NN$-decoupled $NN\pi$ pseudoscalar resonance with T=0 called $d'$.Comment: 13 pages, 5 figures, revised versio

Quantum Monte Carlo calculations of A=9,10A=9,10 nuclei

We report on quantum Monte Carlo calculations of the ground and low-lying excited states of $A=9,10$ nuclei using realistic Hamiltonians containing the Argonne $v_{18}$ two-nucleon potential alone or with one of several three-nucleon potentials, including Urbana IX and three of the new Illinois models. The calculations begin with correlated many-body wave functions that have an $\alpha$-like core and multiple p-shell nucleons, $LS$-coupled to the appropriate $(J^{\pi};T)$ quantum numbers for the state of interest. After optimization, these variational trial functions are used as input to a Green's function Monte Carlo calculation of the energy, using a constrained path algorithm. We find that the Hamiltonians that include Illinois three-nucleon potentials reproduce ten states in $^9$Li, $^9$Be, $^{10}$Be, and $^{10}$B with an rms deviation as little as 900 keV. In particular, we obtain the correct 3$^+$ ground state for $^{10}$B, whereas the Argonne $v_{18}$ alone or with Urbana IX predicts a 1$^+$ ground state. In addition, we calculate isovector and isotensor energy differences, electromagnetic moments, and one- and two-body density distributions.Comment: 28 pages, 12 tables, 7 figure

Single-Proton Removal Reaction Study of 16B

The low-lying level structure of the unbound system $^{16}$B has been investigated via single-proton removal from a 35 MeV/nucleon $^{17}$C beam. The coincident detection of the beam velocity $^{15}$B fragment and neutron allowed the relative energy of the in-flight decay of $^{16}$B to be reconstructed. The resulting spectrum exhibited a narrow peak some 85 keV above threshold. It is argued that this feature corresponds to a very narrow ($\Gamma \ll$100 keV) resonance, or an unresolved multiplet, with a dominant $\pi (p_{3/2})^{-1} \otimes \nu (d_{5/2}^3)_{J=3/2^+}$ + $\pi (p_{3/2})^{-1} \otimes \nu (d_{5/2}^2,s_{1/2})_{J=3/2^+}$ configuration which decays by d-wave neutron emission.Comment: 16 pages, 5 figures, 1 table, submitted to Phys. Lett.

Mass splittings of nuclear isotopes in chiral soliton approach

The differences of the masses of nuclear isotopes with atomic numbers between \~10 and ~30 can be described within the chiral soliton approach in satisfactory agreement with data. Rescaling of the model is necessary for this purpose - decrease of the Skyrme constant by about 30%, providing the "nuclear variant" of the model. The asymmetric term in Weizsaecker-Bethe- Bacher mass formula for nuclei can be obtained as the isospin dependent quantum correction to the nucleus energy. Some predictions for the binding energies of neutron rich nuclides are made in this way, from, e.g. Be-16 and B-19 to Ne-31 and Na-32. Neutron rich nuclides with high values of isospin are unstable relative to strong interactions. The SK4 (Skyrme) variant of the model, as well as SK6 variant (6-th order term in chiral derivatives in the lagrangian as solitons stabilizer) are considered, and the rational map approximation is used to describe multiskyrmions.Comment: 16 pages, 10 tables, 2 figures. Figures are added and few misprints are removed. Submitted to Phys. Atom. Nucl. (Yad. Fiz.