نتایج جستجو برای: plaque ph
تعداد نتایج: 202027 فیلتر نتایج به سال:
Evidence from clinical research indicates that there is a significant relationship between microbial dental plaque and periodontal disease [1-3]. Epidemiologic data suggests the association of chronic gingivitis and bacterial plaque adhering to tooth surface [4-6]. Clinical and invivo studies have demonstrated the occurrence of metabolic events by the microbial dental plaque in the presence of ...
Dental caries is one of the most common oral infectious disease affecting humans worldwide and Mutans Streptococci (MS) have been implicated as major cariogenic bacteria. The “low-pH non-Mutans Streptococci Organisms (non-MSO) have been identified as atypical strains in caries plaque samples, in the absence of MS group. The non-MSO usually competes with MS group for colonizing on the tooth surf...
[email protected]; " 53-7-2020450; Fax: 53-7-2046051 Neutralizing antibodies play a key role in the prevention of dengue infection. It is important that dengue virus plaque titration and plaque reduction neutralization tests (PRNT) be highly reproducible using standardized methods. To evaluate factors that have influence in the PRNT for dengue viruses, neutralizing antibodies were determined in 2...
BACKGROUND Dental caries is the single most prevalent and costly infectious disease worldwide, affecting more than 90% of the population in the U.S. The development of dental cavities requires the colonization of the tooth surface by acid-producing bacteria, such as Streptococcus mutans. Saliva bicarbonate constitutes the main buffering system which neutralizes the pH fall generated by the plaq...
1. The reaction between an antistaphlycoccal phage and the homologous bacterium has been studied, applying the following experimental technics not used in earlier work reported from this laboratory: (a) Both the activity assay and the plaque count were utilized for determining [phage]. (b) Sampling was done at short intervals; i.e., every 0.1 hour. (c) Extracellular phage was separated from the...
BACKGROUND The European Carotid Surgery Trial (ECST) risk model is a validated tool for predicting cerebrovascular risk in patients with symptomatic carotid disease. Carotid plaque hemorrhage as detected by MRI (MRIPH) and microembolic signals (MES) detected by transcranial Doppler (TCD) are 2 emerging modalities in assessing instability of the carotid plaque. The aim of this study was to asses...
Dental caries is a common and costly multifactorial biofilm disease caused by cariogenic bacteria that ferment carbohydrates to lactic acid, demineralizing the inorganic component of teeth. Therefore, low pH (pH 4.5) characteristic signal localised carious environment, compared healthy oral range (6.8 7.4). The development pH-responsive delivery systems release antibacterial agents in response ...
A dynamic relation exists between sugars and oral health. Diet affects the integrity of the teeth; quantity, pH, and composition of the saliva; and plaque pH. Sugars and other fermentable carbohydrates, after being hydrolyzed by salivary amylase, provide substrate for the actions of oral bacteria, which in turn lower plaque and salivary pH. The resultant action is the beginning of tooth deminer...
Dental biofilms are implicated in the formation of caries and periodontal disease. A major constituent of the supragingival biofilm is Streptococcus mutans, which produces lactic acid from sucrose fermentation, enhancing enamel demineralization and eventual caries development. Caries prevention through F inhibits enamel demineralization and promotes remineralization. Fluoride also exerts effect...
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