| 摘要 |
<p>[PROBLEMS] To facilitate insertion when an interdental brush is inserted obliquely between teeth. [MEANS FOR SOLVING PROBLEMS] An interdental brush (10) comprises a grip portion (1) having a front grip portion (1a) extending linearly, and a rear grip portion (1b) formed at one end of the front grip portion (1a) integrally therewith, and a wire brush portion (2) having a wire portion (2a) extending from the other end of the rear grip portion (1b) on its center line (X2), and a brush portion (2b) consisting of a plurality of filaments planted at the wire portion (2a) along the center line (X3) thereof. The angle that the center line (X1) ofthe front grip portion (1a) and the center line (X2) of the rear grip portion (1b) make is in the range of 120-175 degrees. The grip portion (1) is arranged such that when the position at a distance of 5 mm to the grip portion (1) side from the joint (1c) of the rear grip portion (1b) and the wire brush portion (2) is pushed by 5 mm in the direction normal to the center line (X2) of the rear grip portion (1b), the repulsion (F1) of the grip portion (1) falls within the range of 0.5-3.5 kgf.</p> |
