| 摘要 |
PURPOSE: A toothbrush is provided to penetrate bristles of the toothbrush well into the domain between teeth as well as the lower space between the teeth and the gum. CONSTITUTION: A toothbrush comprises a handle(12), and a toothbrush head(14) transplanted with bristles of the toothbrush protruded to one side of the handle. The toothbrush comprises a first inside bristle(14a) arranged in the front part of a toothbrush head in a lozenge form; and a second inside bristle(14b) formed in two rows or third rows in a longitudinal direction of the toothbrush. The first inside bristle is formed in a state of one side amputated 2-4mm downside at the top surface in an opposite direction to a longitudinal direction of the toothbrush. The first inside bristle is 1.3-1.7mm in diameter and the second inside bristle is 2-3mm in diameter. |
