Method and device for distinguishing plaque and calculus
US11471034B2 · kind B2 · utility
1Cited by
1References
6Claims
0Family size
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Key dates
| Filing date | Jan 28, 2020 |
| Grant date | Oct 18, 2022 |
| Priority date | — |
| Expiry date | Jan 17, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30036
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method for distinguishing plaque and calculus is provided. The method is used in a device and includes the following steps: emitting, by a blue light-emitting diode, blue light to illuminate teeth in an oral cavity, wherein the blue light is used to generate autofluorescence of plaque and calculus on the teeth; sensing, by an image sensor, the autofluorescence of plaque and calculus; and distinguishing, by a processor, a plaque area and a calculus area on the teeth based on the autofluorescence.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.