| 摘要 |
<p>The present invention pertains to a toothbrush wherein a first group of bristle tufts (30), which has 1,000 to 16,000 bristles/cm2, is disposed in a region comprising 10 to 80% of the area of an implanted region of a head part (2). A second group of bristle tufts (40), which has less than 1,000 bristles/cm2, may be disposed in the implanted region of the head part (2), on the outside of the first group of bristle tufts (30). An elastic member may protrude in the implanted region of the head part (2), on the outside of the first group of bristle tufts (30). The present invention enables a sufficient amount of an oral preparation to be applied to areas between teeth and to the necks of teeth.</p> |
