Dental plaque is a biofilm or mass of bacteria that grows on surface within the mouth. It is a sticky colorless deposit at first, but when it forms tartar it is brown or pale yellow that is commonly found between the teeth, front of teeth, behind teeth, on chewing surface, along the gumline,. A study was carried out to isolate microorganisms from patients with dental problems. Total 8 dental pl...

Dental calculus, a type of stone formed even under normal conditions, plays an important role in some periodontal diseases. Deposition of dental calculus follows plaque formation, and the variations in the degree of calcification reflect the changes in environment and form of its lamellar structure[1]. Dental plaque is composed of rods, cocci and filamentous bacteria[2], and these morphological...

The importance of Streptococcus mutans in the etiology of dental caries has been well documented. However, there is growing recognition that the cariogenic potential of dental plaque may be determined by the composite interactions of the total plaque bacteria rather than solely the virulence properties of a single organism. This study will examine how the interactions of S. mutans with other bi...

OBJECTIVES To investigate the neutralising effects of subsequent urea rinse on sucrose-induced decrease in plaque pH with interdental plaque pH telemetry. METHOD Six participants wearing partial lower prostheses which incorporated a miniature glass pH electrode were included. After 5 or 6 days of plaque accumulation on the tip of the electrode, the subjects rinsed with a 15 ml 10% sucrose sol...

foods and drinks, and preventing erosion caused by episodes of prolonged exposure to weak acids (e.g. wines and black cola softdrinks) or short-term exposure to strong acids (e.g. reflux and vomiting). • serving as a reservoir for ions (calcium, phosphorus, and fluoride) for remineralization • controlling the oral microflora, through immunological (IgA), enzymatic, peptide and chemical mediator...

Interbacterial adhesion of bacteria isolated from canine dental plaque was assessed by performing a visual coaggregation assay. Using conditions mimicking those likely to be encountered in vivo, the entire cultivable plaque microbiota from a single dog was assessed, and eight (6.7%) unique coaggregation interactions were detected for 120 crosses. Transmission electron microscopy was used to vis...

OBJECTIVE This in situ study evaluated the discriminatory power and reliability of methods of dental plaque quantification and the relationship between visual indices (VI) and fluorescence camera (FC) to detect plaque. MATERIAL AND METHODS Six volunteers used palatal appliances with six bovine enamel blocks presenting different stages of plaque accumulation. The presence of plaque with and wi...

Streptococcus mutans is a human pathogen highly adapted to the oral cavity and a key component of dental plaque. It has an important role in polymicrobial biofilm diseases like caries, periodontitis and endocarditis, all of which are correlated with systemic non-communicable diseases (arthritis, cardiovascular disease). S. mutans forms strong biofilms, is tolerant to low pH, and has a sophistic...

This study suggests degradation of salivary acidic proline-rich proteins (PRPs) into potential innate-immunity-like peptides by oral Streptococcus and Actinomyces species. PRP degradation paralleled cleavage of Pro-containing substrates. PRP degradation by S. gordonii strain SK12 instantly released a Pyr(1)-Pro(104)Pro(105) and a Gly(111)-Pro(149)Gln(150) peptide together with a presumed Arg(10...