Toothbrush with fluorescence means for locating dental plaque

Details Toothbrush with fluorescence means for locating dental plaque Toothbrush with fluorescence means for locating dental plaque

A - Human Necessities

61

B

A61B 5/00 (2006.01) A46B 15/00 (2006.01)

Patent

CA 2333226

An apparatus for detecting biological deposits on the surface of a tooth. The device has illumination means to direct exciting radiation onto a test tooth surface and detection means to detect fluorescence emission from the test tooth surface at a wavelength associated with that of auto fluorescence emission from clean tooth surface. The intensity of the said fluorescence emission from the test tooth surface is compared with an intensity of auto fluorescence emission from clean tooth surface and the comparison is associated with the presence of deposits on the test tooth surface. The device is preferably embodied in a toothbrush which indicates to the user that deposits are present and are being removed.

L'invention porte sur un appareil de détection de dépôts biologiques sur la surface d'une dent. Le dispositif de cette invention comporte un élément d'éclairage qui dirige un rayonnement d'excitation sur la surface test d'une dent et un élément de détection qui détecte l'émission de fluorescence provenant de la surface de la dent à une longueur d'onde associée à celle d'une émission d'auto-fluorescence provenant de la surface propre de la dent. L'intensité de l'émission de fluorescence de la surface test de la dent est comparée à une intensité d'émission d'auto-fluorescence provenant de la surface propre, la comparaison étant ensuite associée à la présence de dépôts sur la surface test de la dent. Ce dispositif est de préférence incorporé dans une brosse à dents qui indique à l'utilisateur la présence dépôts et que ceux-ci sont en train de s'éliminer.

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