TOOTHBRUSH CAPABLE OF BRUSHING WISDOM TOOTH

• Main Author: DOI MASAHIKO
• Format: Patent
• Language: English
• Published: 03.03.1998
• Edition: 6
• Subjects: BRUSHES; BRUSHWARE; HUMAN NECESSITIES

PROBLEM TO BE SOLVED: To sufficiently brush even a wisdom tooth by making the thickness of a block bead in the length direction of bristles thinner at a tip side part than a handle side part. SOLUTION: The tuft base 13 of the block bead is integrally formed with a handle and short bristles 11 and long bristles 12 are flocked to the tuft base 13. A part to flock the short bristles 11 is the tip side part of the tuft base 13 and the part to flock the long bristles 12 is the handle side part of the tuft base 13. The bristle base 13 is bent to a bristle surface side at a tip part where the short bristles 13 are flocked and a step is present on the bristle surface of the tuft base 13. The tip side part at the tuft base 13 is bent to the bristle surface side, the bristle surface of the bristle base 13 is turned to two stages, the bristles at the tip side part are turned to the short bristles 11 and the thickness of the tuft part is made thinner at the tip side part than the handle side part. Also, the thickness of the short bristles 11 is made thin and the hardness of the short bristles 11 and the long bristles 12 is made equal.