Abstract
Aim.This study aims to identify the efficacy of different intracanal medication formulations existing in end of endodontic therapy’s failure, and related to strains of Enterococcus faecalis, Pseudomonas aeruginosa, and Staphylococcus aureus in Petri plates. Materials and methods. It was used diffusion test in agar where each Petri plate with the inoculated bacteria. Perforations of approximately 4 mm deep by 5 mm in diameter were made to prepare where the intracanal drug (25 µl) to be tested. The diameters of the bacterial inhibition zones were measured and registered to each tested medication at the period of 24 hours, 48 hours, 7 and 14 days respectively. Results. All the medications promoted inhibition halos. The inhibition halos were represented in mm. A higher elimination of micro-organisms can be significantly achieved through the association of different substances in the formulation of an intra canal medication, with emphasis to Ca (OH)2 combined with nitrofurazone and magnesium oxide respectively. Conclusion. Cleaning and shaping of the root canal system associated with the chemical combination of Ca (OH) 2 with antiseptic pastes or solutions considerably reduce the bacterial load.
Highlights
Introduction of StudyColorism is defined as the tendency to perceive or behave towards members of a racial category based on the lightness or darkness of their skin tone according to Heckstall’s findings, (Heckstall, 2013)
The effects of colorism is believed to have a lasting impact on the African American community
The data shows that many people believe that the media does not well represent every skin tone and complexion and this could be a reason behind the prominence in colorism
Summary
Colorism is defined as the tendency to perceive or behave towards members of a racial category based on the lightness or darkness of their skin tone according to Heckstall’s findings, (Heckstall, 2013). Most research looks in depth into the mental or psychological effects of the American culture that has consistently supported the colorist system. This colorist system valuing lighter skin tones of black people in society (Beopple, 2015). There is an increased value of white features like light skin and straight hair It is believed, Caucasian people being more privileged over darker complexions, has enabled skin color stratification to continually operate in today’s society. Over the last 10 years quantitative and qualitative data has been gathered to study the effect of colorism on the African American community with a specific focus on the psychological well-being of this population.
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