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https://www.selleckchem.com/products/4-Methylumbelliferone(4-MU).html Background Peri-implantitis due to infection of dental implants is a common complication that may cause significant patient morbidity. In this study, we investigated the antimicrobial potential of Sr(OH)2 against different bacteria associated with peri-implantitis. Methods The antimicrobial potential of five concentrations of Sr(OH)2 (100, 10, 1, 0.1, and 0.01 mM) was assessed with agar diffusion test, minimal inhibitory concentration (MIC), and biofilm viability assays against six bacteria commonly associated with biomaterial infections Streptococcus mitis, Staphylococcus epidermidis, Aggregatibacter actinomycetemcomitans, Porphyromonas gingivalis, Escherichia coli, and Fusobacterium nucleatum. Results Zones of inhibition were only observed for, 0.01, 0.1, and 1 mM of Sr(OH)2 tested against P. gingivalis, in the agar diffusion test. Growth inhibition in planktonic cultures was achieved at 10 mM for all species tested (p less then 0.001). In biofilm viability assay, 10 and 100 mM Sr(OH)2 showed potent bactericidal affect against S. mitis, S. epidermidis, A. actinomycetemcomitans, E. coli, and P. gingivalis. Conclusions The findings of this study indicate that Sr(OH)2 has antimicrobial properties against bacteria associated with peri-implantitis.This study's purpose is to assess the challenges and obstacles faced by female trainee physicians and suggest solutions that could resolve these issues and improve their performance. The study utilized an observational, analytical, cross-sectional design based on a self-administered open-ended and validated questionnaire which was distributed to 133 recruited female resident trainees of medical units in Jeddah, Saudi Arabia. The findings of the study revealed that 52% female trainees experienced gender discrimination, mostly (65%) by their superiors, while 40% were regularly harassed. About half (53%) of the interviewees were severely depressed, resulting i

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