FIELD: medicine.
SUBSTANCE: method involves applying variable force to a tooth. Harmonic mechanical oscillations of frequency not exceeding 250 Hz are excited. Mechanical impedance Z is concurrently measured. Lower limit of changes shows extreme tooth looseness degree. The upper limit of changes shows physiologic tooth looseness degree. Mechanical impedance Z value is measured as Nxs/m, where N is the newton, s is the second and m is the meter.
EFFECT: high accuracy and objectiveness of measurements.
1 dwg
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