sulfuric acid/cárie dentária

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[Experimental studies on adhesion prevention in the pleural cavity using chondroitin sulfuric acid].

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[Packing of a preformed bone cavity with biodegradable material: value of chondroitin sulfuric acid in the osteogenic process].

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Cariogenic virulence characteristics of mutans streptococci isolated from caries-active and caries-free adults.

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The objective of the study was to compare aciduricity (ability, to live in acid), acidogenicity (ability to produce acid), and intracellular polysaccharide production of mutans streptococci (MS) strains isolated from caries-active (CA, with one or more cavitated lesions) and caries-free (CF, with no

Enhanced light absorption and scattering by carbon soot aerosol internally mixed with sulfuric acid.

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Light absorption by carbon soot increases when the particles are internally mixed with nonabsorbing materials, leading to increased radiative forcing, but the magnitude of this enhancement is a subject of great uncertainty. We have performed laboratory experiments of the optical properties of fresh

Pronase digestion of carious dentin.

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The aim of this study was to investigate the individual capabilities of the proteolytic enzyme preparation Pronase, the enzyme collagenase and sodium hypochlorite to disintegrate and solubilize carious dentin. Samples of carious dentin, and samples of sound dentin for comparison, were extracted 4

Interspecies dose extrapolation for inhaled dimethyl sulfate: a PBPK model-based analysis using nasal cavity N7-methylguanine adducts.

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Dimethyl sulfate (DMS) is a volatile sulfuric acid ester used principally as a methylating agent in a wide variety of industrial applications. DMS reacts with organic macromolecules by a SN2 mechanism. The weight of experimental evidence suggests that DMS possesses genotoxic and carcinogenic

Thoracic Duct Chylous Fistula Following Severe Electric Injury Combined with Sulfuric Acid Burns: A Case Report.

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BACKGROUND As patients with thoracic duct injuries often suffer from severe local soft tissue defects, integrated surgical treatment is needed to achieve damage repair and wound closure. However, thoracic duct chylous fistula is rare in burn patients, although it typically involves severe soft

Estimating the carbohydrate content of various forms of tobacco by phenol-sulfuric acid method.

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BACKGROUND Due to consumption of various forms of tobacco in large amounts by Indian population, it has become a cause of concern for major oral diseases. In 2008, the WHO named tobacco as the world's single greatest cause of preventable death. It is also known that certain amount of carbohydrates

[Effect of sulfuric acid vapors on the respiratory system].

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The influence of a mixture of sulphuric acid vapour and SO2 mist upon the respiratory tract of animals was investigated during on exposure lasting 8 and 12 hours. Marked inflammatory changes in the upper respiratory tract, bronchioli and lung parenchyma were found. These changes were manifested by

Influence of Helicobacter pylori culture supernatant on the ecological balance of a dual-species oral biofilm.

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Dental caries is a chronic progressive disease occurring in the tooth hard tissue due to multiple factors, in which bacteria are the initial cause. Both Streptococcus mutans and Streptococcus sanguinis are main members of oral biofilm. Helicobacter pylori may also be detected in dental plaque,

Influence of dentin and enamel pretreatment with acidic sulfur compounds on adhesive performance.

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OBJECTIVE This study tested the potential hampering effects of acidic sulfur compounds (ASC) containing hydroxybenzene sulfonic acid, hydroxymethoxybenzene sulfonic acid, and sulfuric acid, prior to self-etch and etch-and-rinse bonding procedures on enamel and dentin. According to the manufacturer,

A quantitative analysis of total carbohydrate content from the salivary expectorants in young children.

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UNASSIGNED In this postfluoride era, the concentration of fermentable carbohydrate in saliva after food intake is important to determine the risk of developing dental caries. UNASSIGNED The aim of this study is to estimate the total carbohydrate content of salivary expectorants following consumption

Effects of pressing lignocellulosic biomass on sugar yield in two-stage dilute-acid hydrolysis process.

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Dilute sulfuric acid catalyzed hydrolysis of biomass such as wood chips often involves pressing the wood particles in a dewatering step (e.g., after acid impregnation) or in compression screw feeders commonly used in continuous hydrolysis reactors. This study addresses the effects of pressing

Overtone spectroscopy of sulfonic acid derivatives.

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Vapor-phase OH-stretching overtone spectra of methanesulfonic acid and trifluoromethanesulfonic acid were recorded in the Deltav(OH) = 4 and 5 regions using cavity ring-down spectroscopy. We compare these spectra to those of sulfuric acid to consider the effect on vibrational overtone spectra of

Chronic occupational exposure to lead and its impact on oral health.

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Chronic Lead exposure favours the formation of cheilitis, fissures, ulcers and epithelial desquamation of the tongue, palate and other parts of the oral mucous membranes. The tissues of oral cavity may be affected by toxic agents either by direct action as in exposure to sulfuric acid fumes or

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