Toothbrush

Details Toothbrush Toothbrush

A - Human Necessities

61

C

A61C 19/04 (2006.01) A46B 15/00 (2006.01)

Patent

CA 2246292

A device for the detection of plaque on teeth or dentures situated in a conductive fluid, particularly during the course of a cleaning operation, the device having at least one electrode (9) provided with external insulation and having a conductive tip (8) which can be placed onto the surface of a tooth (5), a counter-electrode (13) having an electrical connection to the fluid (17), a power source (12) being connected to the electrode (9) and counter- electrode (13), a measuring device (18) being located between the power source (12) and electrode (9) or counter-electrode (13), the measuring device determining the electrical impedance between the electrode (9) and counter- electrode (13), and an evaluation device (19) and/or indicator device (20) which processes and/or indicates the values measured.

Dispositif permettant de détecter la plaque dentaire sur les dents ou les prothèses dentaires placées dans un fluide conducteur, notamment durant une opération de brossage. Le dispositif comprend au moins une électrode (9) comportant une isolation externe et une pointe conductrice (8) qui peut être placée à la surface d'une dent (5); une contre-électrode (13) en relation électrique avec le fluide (17); une alimentation électrique (12) reliée à l'électrode (9) et à la contre-électrode (13); un dispositif de mesure (18) disposé entre l'alimentation (12) et l'électrode (9) ou la contre-électrode (13), et permettant de déterminer l'impédance électrique entre l'électrode (9) et la contre-électrode (13); et un dispositif d'évaluation (19) et/ou indicateur (20) qui traite et/ou indique les valeurs mesurées.

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