| 摘要 |
AN OBJECT OF THE INVENTION IS TO PROVIDE A TOOTHBRUSH THAT EFFECTIVELY REMOVES PLAQUE ATTACHED TO OR DEPOSITED ON ALL THE REGIONS OF TOOTH SURFACE, INTERDENTAL SPACE, AND CERVICAL MARGIN, AND TO CONDUCT EFFICIENT TOOTH BRUSHING. TO ATTAIN THE OBJECT, AT LEAST ONE OF A PLURALITY OF TUFTS CONSTITUTING THE TUFTING AREA IS WIDE EXTENDING ALONG THE LONGITUDINAL DIRECTION OF A TUFTING BASE, AND THE PROFILE OF THE END PORTION OF THE WIDE TUFT IS CONVERGED TOWARD THE END IN A SHAPE OF DOT, LINE, OR PLANE.
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