Koninklijke Philips Corporation N.v.

Lucas Petrus Henricus Scheffers

Mark Thomas Johnson

Steven Charles Deane

Olaf Thomas Johan Antonie Vermeulen

Lutz Christian Gerhardt

Nicolaas Petrus Willard

Adrianus Wilhelmus Dionisius Maria Van Den Bijgaart

Joyce Van Zanten

Ravindra Bhat

Maria Estrella Mena Benito

Ashoka Sathanur Visweswara

Estelle Julie Dorothée Bernard-fichet

Cornelis Reinder Ronda

Priscilla BRANDÃO Silva

Estelle Julie Dorothée Bernard-Fichet

An optical analysis of saliva or a fluid-saliva mix obtained during or after an oral care action is performed in order to check whether the saliva or fluid-saliva mix contains blood, which allows for determining whether or not a person may suffer from gingivitis or another condition affecting gum health. In particular, light received from a representative sample () containing saliva is detected and analyzed. The analysis involves determination of measurement values of light received by a light-receiving unit () for one or more main wavelengths of the light and one or more auxiliary wavelengths of the light. Advantageously, the main wavelength(s) is/are associated with high hemoglobin absorption and the auxiliary wavelength(s) is/are associated with low hemoglobin absorption. A measurement value at an auxiliary wavelength is used for correcting a measurement value at as main wavelength for background influences.

System and method for providing an indication of a person's gum health

A system () for detecting tissue inflammation, and gingivitis specifically, including a light emitter (); a diffuse reflective spectroscopy probe () having a source-detector distance between 300 μm-2000 μm; and a plurality of detectors () configured to detect: a first wavelength that is less than 615 nm and having a first bandwidth; and second and third wavelengths that are equal to or greater than 615 nm and have second and third bandwidths, respectively, wherein the second or third bandwidth is greater than the first bandwidth.

Wavelength and bandwidth selection for diffuse reflective spectroscopy based gingivitis detection

A system () for detecting tissue inflammation, and gingivitis specifically, including a light emitter () configured to emit light at a tissue region () within a user's mouth; a light detector () configured to detect optical signals diffusely reflected through the tissue region over a period of time; a controller () configured to: determine a slope signal (Q) based on at least two signals (R(λ), R(λ)) from the optical signals, the at least two signals including at least one signal from a hemoglobin-dominated wavelength range; determine one or more characteristics of the slope signal; and select a best measurement signal based on the one or more characteristics of the slope signal. The system further includes a user interface () configured to provide information regarding a position of a probe for accurate detection of tissue inflammation based on the one or more characteristics of the slope signal.

System and method for measurement selection and probe guiding in a gingivitis detector

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Utrecht, Netherlands

Lucas Petrus Henricus Scheffers