PROBLEM TO BE SOLVED: To provide an inter-dental cleaning tool having a cleaning part covered with an elastomer, which can clean inter-dental parts of different sizes in an oral cavity and can avoid it in advance that the region of a small section shape on the leading end side of a cleaning soft part into a region of a large sectional shape at a base end side, thereby to prevent the damage of a tooth root or the careless enlargement of an inter-dental part.SOLUTION: A soft coating part 21a is formed into a taper shape, in which a sectional shape is gradually enlarged from the tip side to a base end side, and which has a varying width of the size of a sectional shape having two or more use assuming part SSS- S in the longitudinal direction, and projection part regions 23A to 24D, in which the gap of soft projection parts 21b along the longitudinal direction becomes relatively large in a manner to correspond to the boundary position between the adjoining use assuming ranges.SELECTED DRAWING: Figure 4【課題】口腔内の大きさの異なる歯間を１本の歯間清掃具で清掃することができ、且つ、清掃用軟質部の先端側の小さい断面形状の領域を使用すべき歯間に対して、基端側の大きい断面形状の領域まで勢いで入れ込んでしまうことを未然に回避でき、歯ぐきを痛めてしまうことや歯間部を不用意に大きくしてしまうことを防止できる、エラストマで被覆した清掃部を有する歯間清掃具を提供せんとする。【解決手段】軟質被覆部２１ａを、先端側から基端側に向けて断面形状が次第に大きくなり、且つ長手方向に二つ以上の使用想定範囲ＳＳＳ～Ｓが設定される断面形状の大きさの変化幅を有するテーパ形状とし、隣接する使用想定範囲間の境界位置に対応して、長手方向に沿った軟質突起部２１ｂの間隔が比較的大きくなる突起部間領域２３Ａ～２４Ｄを設けた。【選択図】図４
