The aim of the study was to assess correlations between the consumption of selected non-alcoholic beverages and the prevalence of tooth erosion among adults visiting dental practices in Krakow. Dental erosion in group 124 people aged 18-55 was assessed using BEWE, while oral dryness with a mirror test. FFQ was used to assess fluid intake, supplemented with questions regarding oral hygiene and socio-demographic factors. Dental erosion, mostly mild, was found in 38.7% of participants. Dry mouth (second and third degree in a mirror test) concerned 16.1% of subjects. Dental erosion was significantly more common (p = 0.01) among participants with dry mouth. More frequent consumption of sweetened beverages as well as 100% juices (fruit, vegetable) correlated with dental erosion. Overall consumption of such beverages and also milk, as well as daily fluid intake was significantly higher among subjects with dental erosion. Incorrect behaviors regarding the quality and quantity of drinks may contribute to tooth erosion among adults.
Total organic carbon (TOC) present in surface water consists of different fractions like dissolved organic carbon (DOC) or biodegradable dissolved organic carbon (BDOC). BDOC may have an impact on the bacteriological quality of water as it can be a source of carbon and energy for microorganisms. It is important to consider this parameter in case of the distribution of drinking water. The aim of this research was to compare the qualities of chosen surface water in Poland and Germany in terms of concentration of total organic carbon and its fractions. The samples were taken from the reservoir in Poland and Rhine River in Germany. The first one is a source of drinking water for humans. The research showed that, considering the analyzed compounds, the water from the river has better quality.
An analytical method that can allow one to determine simultaneously chosen organic micropollutants has been developed to measure their concentrations in water. Standard mixture of 16 polycyclic aromatic hydrocarbons (PAH) and nine polychlorinated biphenyls (PCB) was added to distilled water in a specific amount. The solid phase extraction (SPE) method was applied. Isopropyl alcohol and methanol were used to precondition SPE extraction columns. PAH and PCB were eluted from the column fillings using dichloromethane. Extracts were condensed to a volume of 2 mL. Prepared samples were analyzed with the use of gas chromatography and mass spectrometry. The achieved percent recovery of PAH was from around 7% in the case of chrysene to 100% in the case of naphthalene. The achieved percent recovery of PCB was from about 51% in the case of PCB 101 to 92% in the case of PCB 156.
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