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The media-enhanced teaching techniques became popular in the last years because they stimulate the students' engagement and motivation. The educational movies uploaded on YouTube became nowadays a highly used resource for learning in the academic environment. We conducted an opinion survey among the students at the Faculty of Dental Medicine, “Grigore T. Popa” University of Medicine and Pharmacy, Romania, about their agreement and interest in using educational movies as didactic tools, compared with the traditional teaching methods, and about the features they prefer in such materials. The study group included 170 students with average age 20.93 ± 2.751. Most students (91.2%) use didactic movies in their practical training; 77.6% think that the didactic movies from YouTube contain correct scientific information. 74.6% of the students like to learn using didactic movies, 39.7% of them appreciate the oral speech accompanied by PowerPoint Presentations and 46.6% like the oral speech accompanied by written explanations, with no significant differences between genders and age groups. The most popular features of the educational movies are: human narrator (94.7%), who speaks in Romanian (82.4%). The narrator’s speech must be accompanied by animated schemes with explanations (90.6%) and drawings (93.5%). The movie must have a clear structure, evolving from basic to complex (85.9%). The educational movies uploaded on YouTube are an adequate source of information for the dental students; the professionals in universities must survey better the scientific quality of such materials.

Last few years antibiotics resistance known a major problem that concerns the specialists in the dentistry field due to the improper usage of anti-infectious drugs. Administration of third generation quinolones, levofloxacin (Lev), in dental practice is preferred since has few nonhazardous adverse effects, is used once daily and can be successfully applied as intra-pocket films.This study investigated the possibility of preparing levofloxacin loaded layered double hydroxides nanoparticles in order to enhance antibiotic efficacy against oral pathogens. The nanoparticles obtained under optimal conditions were physico-chemically analyzed and intercalation efficiency was tested. The results of this work revealed that the use of these nanoparticles type levofloxacin loaded layered double hydroxides has the major advantage of prolonged release of the drug, thus allowing an increase of the period between administration and the diminution of side effects of the antibiotic. Further researches should focus on biocompatible properties and antibacterial effect as these nanomaterials supposed to be a sustainable drug delivery system. Keywords: nanoparticles, drug carriers, antibacterial properties, public health dentistry, oral infections

Digital scanners are currently use in various fields of dentistry such as prosthodontics, dental implantology, orthodontics, with a high degree of accuracy, mostly for replacing conventional impressions. The aim of the present study was to assess the accuracy (trueness and precision) of gingival margin measurements, on virtual models obtained by intraoral scanning, for precise diagnosis and treatment monitoring of periodontal disease. Three methods were compared for accuracy: clinical measurements using periodontal probes, digital intraoral scanning and measurements in MeshLab software and 2D digital measurements on intraoral photography taken during clinical measurements. Intraoral scanning was proved to be a reliable method for measuring the gingival level for diagnosis and clinical monitoring having a good accuracy as compared to the gold standard (clinical measurements).

Hypertonias, observed at stomatognatique level, pathologic expressions of striated musculature may have the opportunity of a large palette of therapeutical ways, so clasics as drugs therapy, and so well the modern therapy injection with botulinic toxin, type A Dysport. The choice upon the type of myorelaxation treatment proper to each case depends upon the severity of manifestations at muscular level, frequently a mixed therapy being the option of choice, based on the superposition of different treatment means. The use of botulinic toxin in the treatment of stomatognatic system dysfunctions is without the morphological impact quickly installed therapeutic effect and it has only short term effects.

Over the past decade, exploitation of antimicrobial effect of nanoparticles on viruses, fungi and bacteria, respectively have developed markedly. A close attention was received by the possibility of nanoparticles type drug delivery systems to limit the biofilm formation within the oral cavity due to their important properties such as delivery abilities, anti-adhesive and biocidal features. The major objective of this work was to obtain doxycycline-loaded chitosan nanoparticles and to analyze the properties of as prepared samples in order to prolong the antibiotic release. The synthesized nanoparticles had less than 100 nm using the classis or improved drug encapsulation technique in chitosan matrix. The study focused on the antimicrobial characteristic of nanoparticles for controlling oral infections.

Metronidazole active molecules were intercalated in the inner space of MgAl layered double hydroxides by simple coprecipitation method. The new synthesized nanohybrid material and the pristine hydrotalcite were characterized by different techniques such as X-ray diffraction, infrared spectroscopy and UV-vis spectroscopy verifying thus the incorporation of the antibiotic into the lamellar gallery of hydrotalcite type anionic clay. Studies regarding metronidazole controlled release from synthetic nanocomposite showed that the organic-inorganic nanohybrid structure can serve as drug controlled release system for a wide variety of antibiotics and other molecules used in dental medicine in order to maintain good public health dentistry.

Although obesity and a sedentary lifestyle are well-known risk factors for type 2 diabetes, at molecular level, the oxidative stress is regarded as the primary contributor to the pathogenic process. Our work intends to evidence how the thinking models influence the way that medical practitioners understand the pathogenic mechanisms. Some research groups focused lately on the system’s dynamics and Complex Systems Theory. The living organisms as a complex system could be analyzed applying the network concept. Alternative methods for characterizing biological processes or phenomena based on feedback node structure have been developed [1].

Knee osteoarthritis (KOA) is a chronic multifactorial pathology and a current and essential challenge for public health, with a negative impact on the geriatric patient’s quality of life. The pathophysiology is not fully known; therefore, no specific treatment has been found to date. The increase in the number of newly diagnosed cases of KOA is worrying, and it is essential to reduce the risk factors and detect those with a protective role in this context. The destructive effects of free radicals consist of the acceleration of chondrosenescence and apoptosis. Among other risk factors, the influence of redox imbalance on the homeostasis of the osteoarticular system is highlighted. The evolution of KOA can be correlated with oxidative stress markers or antioxidant status. These factors reveal the importance of maintaining a redox balance for the joints and the whole body’s health, emphasizing the importance of an individualized therapeutic approach based on antioxidant effects. This paper aims to present an updated picture of the implications of reactive oxygen species (ROS) in KOA from pathophysiological and biochemical perspectives, focusing on antioxidant systems that could establish the premises for appropriate treatment to restore the redox balance and improve the condition of patients with KOA.