Plastic materials are widely used today in Paedodontics and Orthodontics for manufacturing preventive and therapeutic devices. Since these are worn for long times in the oral cavity biofilm forms on the smooth acrylic surfaces of those appliances. The biofilm must be removed not to destroy the oral microbiology. The aim of this study was to research the possibility of removing the microbial biofilm and disinfecting retainers using the photodynamic effect of toluidine blue O, Fotosan System (CMS Dental, Copenhagen, Denmark) in comparison to two products available on the market Corega Denture Cleanser Tablets (GlaxoSmithKline) and the Retainer Brite� Cleaning Tablets (DENTSPLY International Raintree Essix, FL, USA). The plastic material used in this experiment was the cold-cure acrylic Palapress� vario (Heraeus-Kulzer GmbH, Hanau, Germany). Images of the biofilm formed by Streptococcus pyogenes were obtained using a confocal laser scanning m icroscope. The images were analyzed using Comstat 2 software. The results showed that all the three investigated methods had a disinfectant effect. Corega Denture Cleanser Tablets reduced most of the biofilm formed on the plastic substrate.

The acid etching procedure represents a procedure that increases the bond strength between the etched enamel and the composite resin. The aim of this study was to evaluate the effect of ortho-phosphoric acid 37% on the morphology and composition of the enamel surface. The surfaces of four extracted teeth (two incisors and two premolars) were etched with 37% ortho-phosphoric acid solution for 15 seconds. The teeth were examined by ATR-FTIR spectroscopy and SEM microscopy in order to determine the degree of the enamel demineralization. A major change on teeth composition and morphology has been found. The results are discussed and compared with those of the effects of different concentrations of bleaching agent (carbamide peroxide) on the enamel surface. Etching with 37% ortho-phosphoric acid caused structural and morphological changes to the dental enamel surfaces.

Aesthetics in dentistry have truly begun their role in the mid-twentieth century through attempts to perform orthodontic prosthetic restorations in the spirit of dentogenia, thereby making it as natural as possible.The aim of the study is represented by the identification of corellative aspects bethween the incidence of frontal edentation at young patients and the condition for a specific therapy. For the clinical study, 120 young patients were placed under observation, patients which showed up at the Paediatric Dentistry Clinic and private dental practices during the time interval 2016-2018, diagnosed with multiple and various pathologies in frontal area . The patients� age was between 5 and 20+ years, 34.21 % having the age between 15 and 20 years, 60.53 % with age past 20 years, age intervals which, although anchored within the young dentistry framework, present different morphological and functional features, which lay at the foundations of the selection or exclusion of one or the other of the solution therapy solutions of the partial toothless. Regarding the prevention of the therapeutic solutions within the studied group we observe the weight of the temporary solutions for the childhood duration, followed by restorations with composed materials, significant statistical percentages belonging to the fixed restorations with the metal and ceramic crowns, the lowest percentage belonging to the ceramic-type restorations with zirconium or fully ceramic ones, choice dictated by the social and economic criteria, at the patients in which the growth process stagnated, essential elements of the patient�s final behaviour with regard to the body scheme reception. Toothless architecture will lay at the basis of the prosthetic rehabilitation in full accordance with the factorial accumulation, embracing valences of high exigency at the teenager�s age, the frontal toothless being perceived as an amputation, forcing the teenager in isolation. In full accordance to the age and the particular clinical situation with regard to the successful esthetical restoration, the preparation and non-preparation actual techniques for the integrated ceramics constitute a selection option.

The aim of this study was to assess the morphological and chemical composition changes induced by the chronic intake of sodium fluoride (NaF) and Amoxicillin in mice enamel. 35 C57BL/6 adult male mice, were randomly divided into a control and 4 treatment groups (n = 7). After acclimatization, the experimental groups were simultaneously treated with 25 ppm (group 2 and 3) and 50ppm (group 4 and 5) of NaF, and 50mg/kg BW (group 2 and 4) and 100 mg/kg BW (group 3 and 5) of Amoxicillin as Amoxicillin/clavulanic acid (AMC). NaF was supplied through drinking water without restricting access, and AMC administered through subcutaneous injection, once per day, for 60 days. After harvesting, lower incisors� enamel was subjected to a scanning electron microscope (SEM) and to an energy dispersive X-ray analysis (EDX). In the treatment groups, SEM and EDX analysis in treatment groups showed an increasing trend of weight percentage (wt%) for C, N, O, F, Na and C/O, F/Fe ratio, and also a decreasing trend of wt% for P, Cl, Ca, Fe and Ca/P ratio. Morphological changes ranged from fissures and short grooves with pits-like appearance, in group 2 sometimes associated with limited demineralized areas looking like irregular scratches, up to demineralized areas extended in the outer enamel, which in group 5 gives the enamel the corroded look. The severity of the morphological changes in the mice enamel varied with the supplied dose of NaF and AMC, and had a uniform pattern in each experimental group. SEM analysis revealed a hypoplasia on the outer enamel and EDX analysis showed a hypomineralisation at the level of the outer enamel.

Amoxicillin it is the most commonly prescribed antibiotic agent and the first intention in the short-term treatment of infections in children. The aim of this study was to assess the effects of amoxicillin/clavulanic acid (AMC) chronic administration on the laboratory mice�s body weight (BW), water intake and values of non-fasting blood glucose levels (n-FBG). Thus, twenty-eight C57BL/6 male mice, of similar age, randomly divided into a control and 3 treatment groups (n = 7) received subcutaneous injection, once per day, for 60 days. During the experiment the n-FBG, daily water intake, and BW changes were recorded every 10 days. The results of our study revealed that the chronic administration of AMC, at a concentration of 100 and 150 mg/kg BW/day, increased capillary n-FGB, and can be associated with a significant increase in the BW and daily water intake in mice.