< Topic >Conforming to the opening of the tooth of various types, it is possible to clean the tooth, the toothpick device whose production cost is low is offered.SolutionsIt is formed by two walls 20,22 where this toothpick device consists of single structure, center possesses flexibiility in the convex condition where has the quality of 14 and elastic memory and is connected, leaving, it consists of the component of the long air where the end 16,18 which is located and, it possesses. The center to have the cross section of abbreviation egg type, the wall focusing, leaving it is located it opposes it forms the long two lines of intersection.< Selective figure >Figure 1【課題】様々なタイプの歯の隙間に適合して歯を清掃することができ、生産コストの低い爪楊枝装置を提供する。【解決手段】この爪楊枝装置は単一構造からなり、中心部14と、弾性記憶の特性を持つ凸面状で可撓性を有する接合された2つ壁20,22により形成される、離れて位置する端部16,18と、を有する細長い中空の部材からなる。中心部は略卵型の断面形状を備え、壁同士が集束して、離れて位置する対向する細長い2つの交線を形成する。【選択図】図1