PROBLEM TO BE SOLVED: To provide a device capable of accurately detecting an adhesion state (quantity) of dental plaque adhering to teeth, which is not accurately detected due to that dental plaque sometimes adheres to a detection unit and a light guide surface in a method with a conventional dental plaque inspection device.SOLUTION: A dental plaque inspection device 100 as an inspection device which irradiates teeth 1 with light, and detects a state of dental plaque 2 adhering to the teeth on the basis of intensity of fluorescent light emitted from the teeth includes: a light emission part 3 for emitting light to be radiated onto the teeth a detection unit (light head part 6) for detecting fluorescent light emitted when irradiating the teeth with light receiving parts 8,9 for receiving detected fluorescent light and a control part 20 for performing signal processing on the basis of fluorescent light intensity detected by the receiving parts. The control part detects a change in fluorescent light intensity emitted from dental plaque due to irradiating dental plaque adhering to the detection unit with light.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2019,JPO&INPIT【課題】従来の歯垢検査装置の方法では検出部やライトガイド表面に歯垢が付着することがあり、正確に検出することができなかった歯に付着した歯垢の付着状態(量)を正確に検出できる装置を提供する。【解決手段】本発明の歯垢検査装置100は、歯1に光を照射して、歯から発生する蛍光の強度に基づいて、歯に付着した歯垢2の状態を検出する検査装置であって、歯に照射する光を発する発光部3と、歯に光を照射したときに発生する蛍光を検出するための検出部(光ヘッド部6)と、検出された蛍光を受光するための受光部8,9と、受光部にて検出された蛍光強度に基づいて信号処理を行う制御部20とを有し、制御部は、検出部に付着した歯垢に光を照射することによる歯垢から発せられた蛍光強度の変化を検知する。【選択図】図1
