Problem to be solved: to provide an interdental cleaning device with improved utility."Settlement means" is an interdental cleaning tool using a Japanese paper thread composed of Japanese paper, and an interdental cleaning tool.The dental floss 4 as an interdental cleaning device is of a Y-shaped type, and includes a holder 5 and an interdental cleaning thread (froth) 1 extending between the Y-shaped tip portions 5A and 5b of the holder 5.The Japanese paper thread 1 for the interdental cleaning consists of Japanese paper material and reinforcing material for reinforcing the Japanese paper material, and the ratio of the fabric of the Japanese paper material and the reinforcing material is 1:1 to 15:1.Diagram【課題】より有用性を向上させた歯間清掃具を提供する。【解決手段】和紙素材によって構成される和紙糸を用いてなる歯間清掃用和紙糸，ならびにこれを用いた歯間清掃具。歯間清掃具としてのデンタルフロス４は，Ｙ字タイプのものであり，ホルダー５と，当該ホルダー５のＹ字先端部５ａ，５ｂ間に張設された歯間清掃用和紙糸（フロス）１と，を備えている。歯間清掃用和紙糸１は，和紙素材と，当該和紙素材を補強するための補強素材と，からなり，和紙素材と補強素材の繊度比は，１：１から１５：１である。【選択図】図２
