| 摘要 |
PROBLEM TO BE SOLVED: To facilitate insertion when an interdental brush is inserted obliquely between teeth. SOLUTION: The interdental brush 10 includes a holding part 1 provided with a linearly extending front holding part 1a and a rear holding part 1b formed integrally at one end of the front holding part 1a, and a wire brush part 2 provided with a wire part 2a extending from the other end of the rear holding part 1b onto an axis X2, and a brush part 2b formed of a plurality of filaments planted in the wire part 2a along an axis X3 of the wire part 2a. An angle formed by an axis X1 of the front holding part 1a and the axis X2 of the rear holding part 1b is in the range of 120 to 175 degrees. The holding part 1 is configured such that the repulsive force F1 of the holding part 1, when a position at the distance of 5 mm from the connection part 1c of the rear holding part 1b and the wire brush part 2 to the side of the holding part 1 is pushed for 5 mm in a vertical direction to the axis X2 of the rear holding part 1b, is in the range of 0.5 to 3.5 kgf. COPYRIGHT: (C)2009,JPO&INPIT
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