lactic acid/dental caries

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Chairside evaluation of pH-lowering activity and lactic acid production of dental plaque: correlation with caries experience and incidence in preschool children.

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OBJECTIVE Because caries activity may be related to dental plaque acidogenicity, a method was developed for chairside evaluation of pH-lowering activity and lactic acid production by dental plaque. Moreover, this study examined the association of these 2 factors with caries experience on oral

Oral lactic acid bacteria related to the occurrence and/or progression of dental caries in Japanese preschool children.

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Previous studies have demonstrated that the presence of lactic acid bacteria (LAB), especially those classified into the genus Lactobacillus, is associated with the progression of dental caries in preschool children. Nevertheless, the kinds of species of LAB and the characteristics that are

Who will win the race in childrens' oral cavities? Streptococcus mutans or beneficial lactic acid bacteria?

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Adhesion to oral soft and hard tissue is crucial for bacterial colonisation in the mouth. The aim of this work was to select strains of oral lactic acid bacteria that could be used as probiotics for oral health. To this end, the adhesive properties of some lactic acid bacteria were investigated.

Effects of Wi-Fi (2.45 GHz) and Lactic Acid Bacteria on Oral Pathogens and Caries Development in Rats.

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OBJECTIVE To evaluate the effects of Wi-Fi and lactic acid bacteria on salivary mutans streptococci and caries formation. METHODS Wistar rats and their offspring were equally divided into two main groups and seven subgroups. Experimental groups were exposed to Wi-Fi during pregnancy and lactation.

[Comparative studies of dental plawue in students with and without dental caries. I. Enzymatic determination of the capacity to synthesize lactic acid in an aerobic medium].

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In cultures of dental plaque taken from healthy dental surfaces of children susceptible to caries and children free from caries, the lactic acid content was determined. The cultures had an initial germ count of between 10(3) and 10(4) organisms per ml. After the cultures had been kept in artifical

[Prevention of the colonization of the nasal cavity in newborn infants by hospital strains of Staphylococcus aureus using lactic acid bacteria].

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Investigations carried out by the authors have disclosed that practically all infants discharged from maternity clinics are S. aureus carriers, and 91.66-97.06% of them have proved to be epidemiologically dangerous as the source of infection. The use of lactic-acid bacteria, strain 317/407 "Narine"

Effect of xylitol-containing chewing gums on lactic acid production in dental plaque from caries active pre-school children.

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OBJECTIVE The aim of this study was to evaluate the lactic acid concentration in supragingival plaque from caries-active pre-school children after a short-term use of either xylitol- or sorbitol-containing chewing gums. METHODS The investigation consisted of a prospective crossover design with 10

Competitive selection of lactic acid bacteria that persist in the human oral cavity.

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Lactic acid bacteria (LAB) might offer opportunities as oral probiotics provided candidate strains persist in the mouth. After intake of a mixture of 69 LAB, strains of Lactobacillus fermentum and Lactobacillus salivarius were especially recovered. Coaggregation with other microbes is likely not a

An enzymological profile of the production of lactic acid in caries-associated plaque and in plaque formed on sound surfaces of deciduous teeth.

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Specific activities of lactate dehydrogenase (LDH) and its fructose 1,6-bisphosphate (FBP) dependency in the small amount of plaque formed on deciduous teeth were determined and compared between those from carious lesions and from sound surfaces. Although the caries-associated plaque showed a higher

Lactic acid bacteria from healthy oral cavity of Thai volunteers: inhibition of oral pathogens.

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The aims of the present study were to screen and characterize the antimicrobial lactic acid bacteria which were isolated from healthy oral cavities of Thai volunteers, and to characterize their inhibiting substances. Among 3790 isolates (suspected to be lactic acid bacteria) from 130 volunteers,

Hydrophilic Oligo(lactic acid)s Captured by a Hydrophobic Polyaromatic Cavity in Water.

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Biologically relevant hydrophilic molecules rarely interact with hydrophobic compounds and surfaces in water owing to effective hydration. Nevertheless, herein we report that the hydrophobic cavity of a polyaromatic capsule, formed through coordination-driven self-assembly, can encapsulate

Effect of lipids on the lactic acid retardation capacity of tooth enamel and cementum pellicles formed in vitro from saliva of caries-resistant and caries-susceptible human adults.

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The lipid content and composition of these pellicles and the effect of lipids on their ability to retard the diffusion of lactic acid were investigated. Lipids accounted for 22.4% of the dry weight of caries-resistant enamel pellicle and 19.2% of caries-resistant cementum pellicle; the pellicle of

[Adhesion of lactic acid bacteria to epithelium of different cavities of the human organism].

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During investigation of adhesive properties of lactic acid bacteria it was found out that 11 strains adhered to buccal intestinal and vaginal epithelium of human. The highest adhesive activity was detected in enterococci (adhesive index 7.75-14.26), lower one--in streptococci (6.40-9.16). In

Hydroxylapatite beads as an experimental model to study the adhesion of lactic acid bacteria from the oral cavity to hard tissues.

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The oral environment contains many different types of microorganisms, including both Gram-negative and Gram-positive cocci, bacilli, and spirochetes. From the ecological point of view, the oral cavity is a perfect niche for certain bacteria such as lactobacilli because they interact, forming

[Diagnostic value of determination of the content of glucose, aldolase and lactic acid in the blood serum and exudate from the abdominal cavity in ovarian neoplasms].

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