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Cel pracySyntetyczne katynony (znane również jako "sole do kąpieli") to nowe substancje psychoaktywne wprowadzone na rynek globalny w ciągu ostatnich 10 lat jako zamienniki nielegalnej amfetaminy. Ze względu na łatwą dostępność szybko stały się popularne. Celem pracy było określenie związku stosowania syntetycznych katynonów z objawami depresyjnymi i zachowaniami ustnymi wśród użytkowników rekreacyjnych.MetodaUżytkownicy forów internetowych związanych z narkotykami zostali poproszeni o wypełnienie ankiety za pośrednictwem platformy Google Forms. Kwestionariusz zawierał pytania dotyczące schematów używania środków psychoaktywnych, Inwentarz Depresji Becka II (BDI II) oraz Kwestionariusz Zachowań Ustnych (OBC) oraz podstawowe dane demograficzne (wiek, płeć).Wyniki150 uczestników (75 w grupie badanej, 75 w grupie kontrolnej) wzięło udział w badaniu. W grupie badanej (w wieku od 15 do 28 lat) wszyscy uczestnicy korzystali z katynonów i innych substancji psychoaktywnych. 42 respondentów korzystało z katynonów w ciągu ostatniego miesiąca. Analiza statystyczna wykazała korelację między liczbą zażywanych substancji psychoaktywnych i poziomem depresji w obu grupach (badanej i kontrolnej), a także statystycznie istotnie wyższą średnią wartościąwyników OBC w grupie użytkowników katynonów w porównaniu z grupą kontrolną. Korelacja między depresją a OBC była statystycznie istotna zarówno dla grupy badanej, jak i kontrolnej.WnioskiBiorąc pod uwagę łatwy dostęp do syntetycznych katynonów, częste zatrucia i młody wiek użytkowników tego badania, temat powinien zostać szerzej przebadany. Substancje psychoaktywne mogą predysponować do rozwoju depresji i różnych form parafunkcyjnych zachowań ustnych.

Background: In late December 2019, a new pandemic caused by the SARS-CoV-2 (Severe Acute Respiratory Syndrome Coronavirus 2) infection began to spread around the world. The new situation gave rise to severe health threats, economic uncertainty, and social isolation, causing potential deleterious effects on people&rsquo, s physical and mental health. These effects are capable of influencing oral and maxillofacial conditions, such as temporomandibular disorders (TMD) and bruxism, which could further aggravate the orofacial pain. Two concomitant studies aimed to evaluate the effect of the current pandemic on the possible prevalence and worsening of TMD and bruxism symptoms among subjects selected from two culturally different countries: Israel and Poland. Materials and Methods: Studies were conducted as cross-sectional online surveys using similar anonymous questionnaires during the lockdown practiced in both countries. The authors obtained 700 complete responses from Israel and 1092 from Poland. In the first step, data concerning TMDs and bruxism were compared between the two countries. In the second step, univariate analyses (Chi2) were performed to investigate the effects of anxiety, depression, and personal concerns of the Coronavirus pandemic, on the symptoms of TMD, and bruxism symptoms and their possible aggravation. Finally, multivariate analyses (logistic regression models) were carried out to identify the study variables that had a predictive value on TMD, bruxism, and symptom aggravation in the two countries. Results: The results showed that the Coronavirus pandemic has caused significant adverse effects on the psychoemotional status of both Israeli and Polish populations, resulting in the intensification of their bruxism and TMD symptoms. Conclusions: The aggravation of the psychoemotional status caused by the Coronavirus pandemic can result in bruxism and TMD symptoms intensification and thus lead to increased orofacial pain.

Chitosan is a linear amino-polysaccharide and a natural polymer with a structure based on repetitive deacetylated and acetylated units randomly distributed. It is produced from chitin, one of the most common naturally occurring polysaccharides. Its numerous biomedical applications have been extensively described in the literature. It becomes more and more popular as a therapeutic agent and its use is constantly extended. Given its commonness, regenerative properties, easy chemical treatment, and biocompatibility, it might be used in the treatment of damaged oral cavity tissues. Due to its antimicrobial and regenerative-inducting properties as well as high biocompetency, chitosan is more and more frequently used in medicine and dentistry. It can be applied in all fields of dentistry including preventive dentistry, conservative dentistry, endodontics, surgery, periodontology, prosthodontics and orthodontics. Several data discussing the effectiveness of chitosan use on new bone formation are still inconclusive. The aim of the paper was to evaluate the applicability and biochemical impact of chitosan on oral health maintenance. Even though chitosan might find its adhibition in all dental specialities, it should still be considered as a potential allergen and thus further studies on this topic should be carried out.

Background.Addition silicones are popular as dental impression materials and are used in bite registration procedures.Objective.This study aimed to compare the postsetting elasticities and other mechanical properties of thirteen addition silicone interocclusal recording materials.Materials and Methods.The following materials were investigated: Colorbite D, Futar D, Genie Bite, Jet Blue Bite fast, Memoreg 2, O-Bite, Occlufast Rock, Omni-Bite Plus, Regidur i, Registrado X-tra, Regofix transparent, StoneBite, and Variotime Bite. Thirty specimens of each material were tested. The elasticities and strengths of the materials were measured with a universal testing machine, and computer software was used to determine theE-moduli, ultimate tensile strengths, and ultimate elongations of the specimens.Results.The results were subjected to statistical analysis using the Kruskal-Wallis test (p≤0.05). The statistics revealed that the meanE-modulus values varied significantly across the materials (p=0.000) and were highest for the StoneBite and Registrado X-tra and lowest for the Regofix transparent. The ultimate tensile strengths were highest for the Regofix transparent and Registrado X-tra (p=0.000) and lowest for the Jet Blue Bite fast and Memoreg 2 (p=0.000). The elongation percentages at the point of breaking varied significantly across the materials (p=0.000); the lowest value was observed for the StoneBite, whereas the Regofix transparent nearly doubled original length.Conclusions.The authors concluded that materials with the highE-moduli and great ultimate tensile strengths may be most useful clinically. Registrado X-tra and StoneBite best met these criteria.

The aim of the study was to assess the prevalence of temporomandibular disorders (TMD) and oral parafunctions, as well as their correlation with psychoemotional factors in Polish university students. The research was conducted in a group of 456 students (N=456). The examination form comprised of two parts: survey and clinical examination. The research diagnostic criteria for temporomandibular disorders (RDC/TMD) was used in order to assess TMD. Symptoms of TMD were observed in 246 (54%) students after clinical examination. The largest group involved students with disc displacement (women: 132, 29%; men: 70, 15%). Women (164; 36%) suffered more frequently than men (82; 18%) from problems related to the stomatognathic system (P<0.05), described themselves as easily excitable and emotionally burdened, and reported symptoms as tightness of the facial and neck muscles (P<0.05). In 289 (64%) students intraoral symptoms concerning occlusal parafunctions were observed. In 404 (89%) examined students, nonocclusal parafunctions were recorded. A significant correlation between TMD and psychoemotional problems could be detected. TMD symptoms more often concern women. Emotional burden and excitability are factors predisposing muscular disorders.