| 摘要 |
PROBLEM TO BE SOLVED: To provide an interdental brush capable of easily removing dental plaque in the vicinity of a rear face of a tooth.SOLUTION: An interdental brush 1 comprises: a handle part 10; a core part 20; and a brush part 30. The core part 20 extends from the handle part 10 in a linear state. The brush part 30 is formed of plural filaments extending in a direction crossing to the extension direction of the core part 20, from the core part 20. The plural filaments comprise a filament 32, a filament 34, and a filament 36. The filament 32 is the closest to a tip end 20a of the core part 20. The filament 34 has a length shorter than that of the filament 32, and the closest to the filament 32. The filament 36 is the furthest from the tip end 20a of the core part 20. The length of the filament 32 is longer than an average length of the plural filaments.SELECTED DRAWING: Figure 1 |
