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methyl mercaptan/karies
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Sida 1 från 22 resultat
Conversion of Methyl Mercaptan to Hydrocarbons over H-ZSM-5 Zeolite: DFT/BOMD Study.
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Methyl mercaptan-a harmful impurity in natural gas-may be selectively converted into H2S and hydrocarbons [methyl mercaptan to hydrocarbon (M2TH) process], using zeolite catalysts. When M2TH is compared with the well-known MTH (methanol to hydrocarbons) process, significant differences emerge,
[Analysis of volatile sulfur compounds production of oral cavity in preschool children and influencing factors].
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OBJECTIVE
To investigate the prevalence of volatile sulfur compounds(VSC) in oral cavity of preschool children, and to analyze related factors, thus to provide scientific basis for the prediction and treatment of halitosis.
METHODS
The VSC content (hydrogen sulfide, methyl mercaptan, dimethyl
Discrimination of the oral microbiota associated with high hydrogen sulfide and methyl mercaptan production.
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Both hydrogen sulfide (H2S) and methyl mercaptan (CH(3)SH) are frequently detected in large amounts in malodorous mouth air. We investigated the bacterial composition of saliva of 30 subjects with severe oral malodor exhibiting extreme CH(3)SH/H(2)S ratios (high H(2)S but low CH(3)SH concentrations,
Effects of Lactobacillus salivarius WB21 combined with green tea catechins on dental caries, periodontitis, and oral malodor.
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Reduction of bacterial volatile sulfur compound production by licoricidin and licorisoflavan A from licorice.
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Halitosis affects a large proportion of the population and is, in most cases, caused by the production of volatile sulfur compounds (VSCs), particularly methyl mercaptan and hydrogen sulfide, by specific bacterial species colonizing the oral cavity. In this study, a supercritical extract of Chinese
[Preventive dentistry 7. Getting rid of halitosis].
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Halitosis or bad breath is a problem that affects many people and its source is generally found in the oral cavity (intra-oral halitosis). Bacteria in the oral cavity produce volatile sulphur compounds such as hydrogen sulphide and methyl mercaptan that not only emit an unpleasant odour, but may
[The effect of mouthwash on oral malodour production].
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Volatile sulphur compounds (VSC), hydrogen sulphide, methyl mercaptan and dimethyl sulphide are by-products derived in oral cavity through putrefactive activity of microorganisms. VSC are the principal cause of physiological oral malodour. There are indications that these compounds are cytotoxic to
Novel reuterin-related compounds suppress odour by periodontopathic bacteria.
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OBJECTIVE
Halitosis is caused by volatile sulphur compounds including methyl mercaptan (CH3 SH) in the oral cavity and is a serious problem that limits interpersonal social communication. The aim of study was to evaluate the effects of reuterin-related compounds (RRCs) on halitosis-related
Detection of Helicobacter pylori DNA in the saliva of patients complaining of halitosis.
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Helicobacter pylori infection, which causes peptic ulcers and gastric cancer, is considered a possible cause of halitosis. Recently, the oral cavity was identified as a possible H. pylori reservoir, particularly in the presence of periodontal disease, which is a cause of halitosis. The purpose of
Oral malodor and its relevance to periodontal disease in the dog.
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Oral malodor has been studied extensively in humans but very little work has been done in dogs where it constitutes a significant problem. In this article we review its causes, methods of detection, and strategies for preventing it. Oral malodor arises from microbial metabolism of exogenous and
Halitosis and Helicobacter pylori infection.
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There is disagreement about a possible relationship between Helicobacter pylori (H. pylori) infection and objective halitosis, as established by volatile sulfur compounds (VSCs) in the breath. Many studies related to H. pylori used self-reported halitosis, a subjective and unreliable method to
Extra-oral halitosis: an overview.
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Halitosis can be subdivided into intra-oral and extra-oral halitosis, depending on the place where it originates. Most reports now agree that the most frequent sources of halitosis exist within the oral cavity and include bacterial reservoirs such as the dorsum of the tongue, saliva and periodontal
A multifactorial investigation of the ability of oral health care products (OHCPs) to alleviate oral malodour.
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AIM, BACKGROUND: Oral malodour (halitosis) is generally ascribable to oral microbial putrefaction generating malodorous volatile sulphur compounds which predominantly comprise dihydrogen sulphide and methyl mercaptan. This study assesses the relative effectiveness of 6 oral health care products in
Halitosis vaccines targeting FomA, a biofilm-bridging protein of fusobacteria nucleatum.
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Halitosis (bad breath) is estimated to influence more than half of the world's population with varying degree of intensity. More than 85% of halitosis originates from oral bacterial infections. Foul-smelling breath mainly results from bacterial production of volatile sulfur compounds (VSCs) such as
Association between oral malodor and adult periodontitis: a review.
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BACKGROUND
Bad breath has a significant impact on our daily social life to those who suffer from it. The majority of bad breath originates within the oral cavity. However, it is also possible that it can come from other sources such as gastric-intestine imbalance. The term "oral malodor" is used to
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