The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 13, 2001
Filed:
May. 11, 1999
Method and device for the recognition of caries, plaque, concretions or bacterial infection on teeth
Raimund Hibst, Erbach, DE;
Robert Paulus, Gersthofen, DE;
Kaltenbach & Voigt GmbH & Co., Biberach/Riss, DE;
Abstract
Method and device for the recognition of caries, plaque, concretions or bacterial infections on teeth, whereby with the aid of a light source (,) an excitation radiation (,) is generated which is directed at a tooth (,) to be investigated and there brings about a fluorescence radiation (,). The fluorescence radiation is detected and evaluated with a detection device (,). A spectral filter is arranged before the detection device (,) which restricts the fluorescence radiation detected and evaluated by the detection device (,) to wavelengths greater than ca. 800 nm, in order to make possible an improved detection of carious tooth regions. Advantageously, the irradiation of the tooth to be investigated is effected with a relatively long wavelength excitation radiation (,), the wavelength of which may be for example ca. 780 nm.