View clinical trials related to Biofilms.
Filter by:The objective of this project was to compare the immediate antimicrobial effect and in situ substantivity of a new 0.20% chlorhexidine (CHX) gel and cymenol with the current CHX gel formulation on dental plaque biofilm and salivary flora up to 7 hours after a single application.
Microplastic rate is increasing ib athmosphere. They can be found in lung, kidney, heart, even placenta. Otitis media with effusion (OME) is a clinical condition that is ver common in children. Biofilms are blamed in the pathogenesis of OME. Microplastics can include biofilms. Importance of microplastics for potential pathogens and their toxicity aspects should be enlighted with studies. This study aims to investigate presency of microplastics in middle ear fluid of patients with OME.
Evidence that supports using certain concentration of trisodium citrate as a locking solution for hemodialysis catheters has not yet been established. Higher concentrations of trisodium citrate are more effective in preventing thrombosis, formation of blood clots, preventing infections and biofilm formation, but due to potential side effects, their use is limited. The aim of the study is to compare the impact of two different concentrations of tri-sodium citrate solution (30% and 4%) on the formation of biofilms in hemodialysis single-volume jugular hemodialysis catheters and to determine the effectiveness of prevention of dysfunction of hemodialysis catheters.
The purpose of this investigation is to conduct a randomized controlled trial within a subgroup of difficult-to-treat patients with CRS, evaluating the use of topical xylitol treatment concurrently with topical steroid/antibiotics combination in the effort to disrupt biofilms and improve disease control. The effectiveness of topical surfactants is a research gap in treating CRS but has promising correlates in other medical fields. Specifically, the investigators will be studying the effect of topical xylitol therapy on biofilm production with the use of PCR bacterial sequencing before and after medical intervention.
This clinical study identified the Candida species from the palate and complete dentures of edentulous individuals with prostheses-related stomatitis (PRS) and evaluated the effect of disinfectant solutions for denture hygiene on Candida spp. Sixty participants were randomly assigned in 04 parallel groups (n = 15); They were oriented to brush their prostheses and the palate 3 times a day and immerse them in saline solution (C-control), 0.25% Sodium hypochlorite (HS0.25%), 10% Ricinus communis (RC10%) or 0.5% Chloramine T (CT 0.5%) for 20 minutes. Biofilm samples were collected from the prostheses and palate in the baseline, after 7 and 37 days of use of the solutions and seeded in CHROMagar Candida medium. After incubation period, the presumptive identification, incidence verification and quantification of Candida species growth (CFU count) were performed. To quantify biofilm with software ImageTool 3.0, the inner surface was disclosed (1% neutral red) and photographed at the end of each period. The Candidiasis remission was assessed by scores before and after the use of solutions by palate's phographs. Descriptive analyzes were used for the identification and incidence of Candida spp. Kruskal-Wallis and Friedman tests, with stepwise step-down post-test for cell growth; ANOVA and Tukey for biofilm removal; Frequency of scores for evolution of inflammation. Level of significance was 95%. The most incident species were C. albicans, followed by C. tropicalis, C. glabrata and C. krusei. HS 0.25% reduced the incidence of the three species on the prostheses and palate in the periods of 7 and 37 days; CT 0.5% promoted reduction of Candida spp. only in dentures. R. communis decreased the incidence of C. tropicalis in both collection sites. For CFU counts, HS 0.25% and CT 0.5% caused significant reduction. For biofilm removal, HS0.25% was the most effective (9.75 ± 12.6) and RC10% (15.92 ± 14.8) intermediate. All groups decreased protheses-related stomatitis. HS0.25% has potential for clinical use as total denture disinfectants. RC10% and CT0.5% require further studies to be indicated as alternative solutions.
This study aims to evaluate the in situ antibacterial activity of a mouthwash containing essential oils with and without alcohol on undisturbed de novo plaque-like biofilm (PL-biofilm) up to 7 h after its application. An appliance was designed to hold six glass disks on the buccal sides of the lower teeth, allowing PL-biofilm growth. Twenty healthy volunteers will the appliance for 48 h and then performed a mouthwash with essential oils. Disks will be removed after 30 s and at 1, 3, 5, and 7 h later. After a washout period, the same procedure will be repeated with a sterile water mouthwash and a mouthwash with essential oils without alcohol. After PL-biofilm vital staining, samples will be analyzed using a confocal laser scanning microscope analysing their bacterial viability and thickness.
The accumulation and maturation of oral biofilm in the gingival margin is widely recognised to be the primary aetiological factor in the development of chronic gingivitis. Based on this association, the current treatment of gingivitis is focused on biofilm disruption, which will normally include mechanical processes, both professionally and at home. However, for patients, it is not easy to achieve a proper level of plaque control. The efficient plaque control techniques are very time consuming and require a special motivation and skills for their optimum use. It was at this point where mouthwashes become important, due to the fact that they include diverse types of antimicrobial agents to complement the results of mechanical oral hygiene measures. The essential oils have been presented as a realiable alternative to the "gold Standard" (Chlorhexidine). However, it use has been limited clinically due to their alcohol contain. Some years ago, a new alternative without alcohol has been launched to the market. This formulation has not been already deeply tested specific antiplaque studies in which the structure of the biofilm remained intact. The aim of this study was to evaluate the in situ antiplaque effect of 2 antimicrobial agents (based on an essential oils formulation with and without alcohol) in the short term with a posterior analysis on "non-destructured" biofilm with Confocal Laser Scanning Microscope combined with fluorescence staining.
Chronic wounds cause significant morbidity and cost our healthcare system millions of dollars each year.Their healing is slowed by biofilms, communities of bacteria surrounded by a protective layer that stops the immune system and antibiotics from getting close enough to kill them. The investigators will develop a new strategy to destroy biofilms using a protein made from bacteria that live on our skin.The Staphylococcus epidermidis Esp protein will be used to destroy Staphylococcus aureus biofilms, the most common bacterium in chronic wounds. The investigators hypothesize that the use of the Esp protein will breakdown S. aureus biofilms, decrease bacterial colonization of chronic wounds and improve healing times.