Background and Objectives Herbal dentifrices are fast gaining popularity in most parts of Asia and Europe. Although effects of dentifrices on pathogenic plaque microorganisms has been documented, little or no evidence exists with regard to their effects on the useful microflora, which help to keep the pathogenic strains at bay. The present study was attempted to evaluate and compare these effec...

While performing surveillance studies in Oeiras, Portugal, designed to describe the impact of pneumococcal conjugate vaccine on colonization, we observed an increase from 0.7% in 2003 to 5% in 2006 in the prevalence of penicillin resistance (MIC of 2 to 6 mg/liter) among presumptively identified pneumococcal isolates. Although 15 of the 22 penicillin-resistant isolates obtained in 2006 were opt...

Members of the mitis group of streptococci are normal inhabitants of the commensal flora of the oral cavity and upper respiratory tract of humans. Some mitis group species, such as Streptococcus oralis and Streptococcus sanguinis, are primary colonizers of the human oral cavity. Recently, we found that hydrogen peroxide (H2O2) produced by S. oralis is cytotoxic to human macrophages, suggesting ...

The close phylogenetic relationship of the important pathogen Streptococcus pneumoniae and several species of commensal streptococci, particularly Streptococcus mitis and Streptococcus pseudopneumoniae, and the recently demonstrated sharing of genes and phenotypic traits previously considered specific for S. pneumoniae hamper the exact identification of S. pneumoniae. Based on sequence analysis...

We reinvestigated the clonal diversity and dynamics of Streptococcus mitis and two other abundant members of the commensal microbiota of the upper respiratory tract, Streptococcus oralis and Streptococcus infantis, to obtain information about the origin of frequently emerging clones in this habitat. A culture-independent method was used, based on cloning and sequencing of PCR amplicons of the h...

Adresa za dopisivanje Silvana Jukić Krmek Sveučilište u Zagrebu Stomatološki fakultet Zavod za endodonciju i restaurativnu stomatologiju Gundulićeva, 10000 Zagreb Tel: +385 1 4802 126 [email protected] Sažetak Svrha: U ovom se istraživanju ispitivao antibakterijski učinak dvaju materijala za retrogradno brtvljenje korijenskog kanala testom bakterijske difuzije agara. Materijali i postupci: Ploče kr...

It is common knowledge the current trend of developing and testing products accrued from natural plants. On that premise, Stryphnodendron adstringens (Mart) Coville highlighted was aim for evaluating its antibacterial effect on dental caries. A crude dried methanolic extract prepared applied 50 to 500 mg/mL determine Minimum Inhibitory Concentration (MIC) seven distinguished bacterial cultures....