| 摘要 |
<p>A toothbrush, comprising:
a head extending from a neck which extends from a handle, the head having a plurality of tooth cleaning elements extending therefrom;
a first group of tooth cleaning elements located towards a free end of the head;
a second group of tooth cleaning elements located towards the outside of the head;
a third group of tooth cleaning elements which alternate with the second group of tufts, wherein the third group of tooth cleaning elements are oriented at an acute angle to a top surface of the head in a direction that is across the width of the head;
characterized in that the toothbrush further comprises a fourth group of tooth cleaning elements fixed toward the inside of the head, wherein each of the fourth group of tooth cleaning elements is made of a thermoplastic elastomer, wherein each of the fourth group of tooth cleaning elements is in the shape of a curved wall, each of the fourth group of tooth cleaning elements having an anchor disposed in the head, wherein the anchor has a first portion and a second portion, the first portion being smaller in an X and Y dimension than the second portion; and
a fifth group of tooth cleaning elements located towards the inside of the head.
</p> |
