METHOD OF CARIES DIAGNOSTICS Russian patent published in 2015 - IPC G01N33/50 

FIELD: medicine.

SUBSTANCE: invention relates to medicine, namely to dentistry, and can be used in diagnostics of dental caries by method of infrared spectroscopy. For this purpose sample of patient's saliva is preliminarily dries, dry residue is crushed and suspended in vaseline oil. IR-spectroscopy is carried out in spectrum area 1200-800 cm^-1 and height of peaks of absorption bands with maximums 1070, 1017, 960, 860 cm^-1 is determined. After that, values of four ratios of peak height with maximum at 1070 cm^-1 to peak height with maximum 1017 cm^-1, peak height with maximum at 1070 cm^-1 to peak height with maximum 960 cm ^-1, peak height with maximum at 1070 cm^-1 to peak height with maximum 860 cm ^-1, ratio of peak height with maximum at 1017 cm^-1 to peak height with maximum 860 cm^-1. Dental caries is diagnosed at the following values of ratios of peak heights 1070/1017, equal to 11.64±0.14, peak heights 1070/960, equal to 1.08±0.12, peak heights 1070/860, equal to 6.40±0.41, and peak heights 1017/860, equal to 4.15±0.44.

EFFECT: invention provides self-descriptiveness of diagnostics and increases its accuracy.

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