Plaque position detection and plaque detection system in time-resolved fluorescence method

摘要

A plaque detection system is described. The system is a dental device and a multimode optical waveguide that receives fluorescence at multiple angles, wherein the fluorescence travels along the core of the multimode optical waveguide with different path lengths, resulting in mode dispersion. Multimode optical waveguide. The plaque detection system also includes a detector configured to receive the fluorescence to detect plaque, tartar, and / or caries and communicate dental plaque identification information based on frequency domain lifetime measurements. The mode dispersion is used to detect at least one plaque, tartar, and / or caries fluorescent area of the tooth. The plaque fluorescence areas detected with modal dispersion include different levels of plaque relative to the center point of the plaque fluorescence area. Thus, the plaque detection signal depends on the radial distance from the center point of the plaque fluorescence area.