METHOD FOR DIFFERENTIAL DIAGNOSIS OF NOSOLOGICAL FORM OF TOOTH ENAMEL DEMINERALISATION Russian patent published in 2020 - IPC A61C19/04 A61B6/00 

FIELD: medicine.

SUBSTANCE: invention refers to medicine, namely to dentistry, and can be used for differential diagnosis of a nosological form of tooth enamel demineralisation. That is followed by CT densitometry. Value of the absorption coefficient expressed in Hounsfield's units (HU) is evaluated throughout the scanning area in the area of the tooth equator from the neck to the cutting edge, or the chewing tubercle in the sagittal plane at depth of 1 mm with measurement of at least twenty points. If the absorption coefficient exceeds 3664 HU, and the ratio between the maximum and minimum values of not more than 11 %, the state of the tooth enamel level is determined. If the absorption coefficient is 3664 HU and less and the ratio between the maximum and minimum values is not more than 21 %, the primary congenital hypomineralization of the enamel is diagnosed. If the absorption coefficient is 3664 HU and less, and the ratio between the maximum and minimum values is 21 % and more, and the presence of caries at the stage of the white spot in the clinical examination, the subsurface demineralisation of the tooth enamel is diagnosed. If the absorption coefficient is 3664 HU and less, and the ratio between the maximum and minimum values is 21 % and more in the absence of caries in the white spot stage, surface demineralisation of tooth enamel is diagnosed.

EFFECT: method provides differential diagnosis of nosological tooth enamel demineralisation by determining densitometric criteria.

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