PROBLEM TO BE SOLVED: To provide an interdental cleaner capable of preventing such a trouble that a core part is broken in use and a cleaning part is left in an oral cavity, and improving insertion properties between molar teeth and cleaning properties between the molar teeth as well as those between teeth other than the molar teeth by constituting it in such a manner as to retain a bent state of the cleaning part.SOLUTION: An interdental cleaner 1 including a cleaning part 2 and a handle part 3, includes a core base material part 12 that constitutes a part or the whole of the cleaning part 2 and is elongated in the extension direction, formed at a base material part 10 composed of a monoaxially-oriented and high-density polyolefin-based resin having a density of 0.968-0.980 g/cm3.SELECTED DRAWING: Figure 2COPYRIGHT: (C)2017,JPO&INPIT【課題】使用時に芯部が折れて、清掃部が口腔内に残ってしまうという不具合を防止でき、しかも清掃部を折り曲げた状態に形状保持できるように構成することで、臼歯間以外の歯間は云うまでもなく、臼歯間への挿入性及び臼歯間の清掃性を向上可能な歯間清掃具及びその製造方法を提供する。【解決手段】清掃部2とハンドル部3とを有する歯間清掃具1であって、密度が0.968~0.980g/cm3の一軸延伸高密度ポリオレフィン系樹脂からなる基材部10に、清掃部2の一部又は全部を構成する、延伸方向に細長い芯基材部12を設けた。前記ポリオレフィン系樹脂としてポリエチレン樹脂を用いた。【選択図】図2
