SYSTEM FOR SOFT TISSUE PROTECTION AGAINST DENTAL BLEACHING AGENT Russian patent published in 2015 - IPC A46B15/00 

FIELD: medicine.

SUBSTANCE: device comprises a cleaning head with conductive fibre bristles which are used to feed a potential for the electrochemical activation of the dental bleaching agent, e.g. peroxide nearby the teeth. A complex impedance device system (62) or an optical device system (27) provides the information whether the bristles with the conductive fibres are nearby the dental surface or nearby the gingival surface. The first of the above systems - the complex impedance one - uses an electrical signal through a fibre to determine the complete impedance of a chain comprising a tooth or a gingival surface with the complex impedance supposed to vary in accordance with the fact if the tooth or the gingival surface is involved into the chain. The optical system generates a light beam, which is directed to the oral cavity surface through the conductive fibre with the return light colour showing if the surface is dental or gingival. If it is the tooth that is detected, the dental bleaching agent is activated on the bristle, whereas determining the gingival tissue keeps the dental bleaching agent inactive on the bristle.

EFFECT: structural improvement.

20 cl, 3 dwg