METHOD FOR ESTIMATING PERIODONTIC TISSUES STATE Russian patent published in 1998 - IPC

FIELD: medicine. SUBSTANCE: method involves determining blood-filling degree from response to pulsating low frequency complex modulation electromagnetic field. To do it, diagnostic transducer is positioned in two points being root apex and gingival edge projection over maxilla and mandible. Response signal is converted into analog form as feedback voltage Vfb. The value of Vfb is used to calculate bioelectromagnetic reactivity index value. The value is between 1.0 and 1.1, normal state of blood circulation is diagnosed. EFFECT: enhanced accuracy of early stage diagnosis. 2 dwg , 1 tbl