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- W2999691976 abstract "The preservation of enamel mineral is influenced by the supersaturation of salivary secretions with respect to calcium phosphate salts. The aim was to measure the chemical environmental state of phosphate ions in a subject’s parotid saliva, and to correlate this with their dental caries score, by means of 31P-Nuclear Magnetic Resonance Spectroscopy (31P-NMR) and the International Caries Detection and Assessment System (ICDAS). Unilateral paraffin wax stimulated parotid saliva samples were collected from 21 healthy adult subjects using a Lashley cup. The flowrate was recorded during collection. Clinical caries scores of each subject were classified using the ICDAS score. The pH was recorded for each saliva sample. 31P-NMR spectra of each saliva sample were obtained to determine the phosphorus chemical environment. All the collected data were analysed by Pearson’s correlation. Parotid saliva flow rates were in the range from 0.07 to 0.56 ml/min. The pH varied from 5.9 to 7.6. Each 31P-NMR spectrum showed a single broad line with a chemical shift between 0.07 and 2.38 ppm. At neutral pH the maximum chemical shift was 2.05 ppm, whereas at a lower pH values the phosphorous chemical shift reduced, to 0.34 at pH 5.9. The flowrate and the 31P-NMR chemical shift correlated positively (r = 0.71; p < 0.05). The ICDAS score correlated negatively with the 31P-NMR chemical shift (r = 0.43; p < 0.05). This parotid saliva 31P-NMR study has shown that different phosphate states exist within saliva, which significantly influence its inorganic chemical behaviour, and therefore its cariostatic activity." @default.
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- W2999691976 date "2020-03-01" @default.
- W2999691976 modified "2023-10-17" @default.
- W2999691976 title "Correlation between parotid saliva composition and dental caries using 31P-NMR and ICDAS score" @default.
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- W2999691976 doi "https://doi.org/10.1016/j.archoralbio.2020.104651" @default.
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