background and objectives: the most prevalent and worldwide oral disease is dental caries that affects a significant pro- portion of the world population. there are some classical approaches for control, prevention and treatment of this pathologic condition; however, the results are still not completely successful. therefore new methods are needed for better management of this important challen...

background : verbascum thapsus (vt) is a medicinal plant that chemical constituents of it revealed the presence of biologically active compounds with antibacterial properties. the aim of the present study was to evaluate the antimicrobial and anti-adherent activities of ethanol extract of (vt) against of three oral streptococci in vitro. methods : in this study, biofilm formation of s. mutans 1...

Controlling the growth of cariogenic microorganisms such as oral streptococci is an adjunct therapy for caries-active individuals to prevent and treat caries. Here we investigated the antimicrobial activity of the synthetic amphipathic α- helical antimicrobial peptide GH12 (GLLWHLLHHLLH-NH2) against oral streptococci in vitro. Circular dichroism studies showed that GH12 takes on an α-helical co...

The objective of this study was to investigate the ability of biofilm formation among mutans and non mutans oral streptococci and to determine the effect of Lactobacillus acidophilus DSM 20079 as a probiotic strain on the adhesion of selected streptococcal strains on the surfaces. The sample comprised 40 isolates of oral streptococci from dental plaque and caries of volunteer persons. Streptoco...

Introduction: However human oral cavity consist a mass of microorganisms, some alteration such as application the complete removable denture with poor oral hygiene in edentulous patients may cause overgrowth of several opportunistic microorganisms resulted denture stomatitis. The aim of present study was to compare the dominant oral micro-flora between edentulous denture users with dentate elde...

We evaluated the effects of special oral care using a toothbrush with combined irrigation and suctioning functions, along with povidone-iodine to treat oral bacteria and mucositis, in esophageal cancer patients undergoing chemoradiotherapy. In the special care group, oral hygiene was performed 3 days a week after dinner. Bacteria in saliva and plague samples were measured at various sampling po...

Institute of Dental Research Westmead Millennium Institutes Westmead Centre for Oral Health PO Box 533 Wentworthville NSW 2145 Tel (02) 98458772 Fax (02) 98457599 E-mail: [email protected] Infective endocarditis (IE) is a life threatening, endovascular infection occurring when bacteria enter the blood stream and adhere to heart valves. Mortality rates remain in the range of 1127% ....

The possibility that fibronectin on the surface of oropharyngeal cells may serve as a receptor for the binding of group A streptococci (Streptococcus pyogenes) was investigated. Purified human plasma fibronectin inhibited the adherence of group A streptococci to oral epithelial cells in a dose-dependent manner. The relative amounts of fibronectin available on oral epithelial cells correlated cl...

Streptococcus species are the most abundant genera in the oral microbiota. The prevalence of antibiotic resistant oral streptococci is on the increase and the most reported antibiotic resistance profile in oral streptococci include, among several antibiotics, resistance to βlactams antibiotics, macrolides and tetracycline. Several studies have shown that majority of the antibiotic resistance ge...