| 摘要 |
FIELD: medicine. ^ SUBSTANCE: invention relates to medicine, namely to dentistry and can be applied in case of parodontitis disease. Estimation of density of lower and upper jaw bone tissue is carried out by means of digital densitometry by images obtained by scanning orthopantomograms. Confidence interval is built for true value y in population calculated by binary regression by formula y=+x, where x is mean value of density of lower and upper jaw bone tissue, y is line of regression, whose calculated value equals 126.4716, is absolute term of estimation line, characterizing y value when x=0; is angular coefficient characterising value by which y increases in the average, if x is increased by 1. If value of roentgenological density of jaw bone tissue is lower than 126.4716, presence of risk of parodontitis development is determined. ^ EFFECT: method allows to determine risk of parodontitis development objectively and with high accuracy, irrespective of collateral factors such as accompanying diseases, and irrespective of patient's age. |
