| 摘要 |
PROBLEM TO BE SOLVED: To provide a tooth brush giving no damage to a moucous membrane in a mouth and capable of cleaning teeth including the deepest ones by forming the tooth brush out of a rubber type resin having a shape deformable along a line of teeth with a tip of the brush serving as a cushion. SOLUTION: A tip 2 of this tooth brush serves as a soft cushion with elasticity and is in a spherical shape. A bristle portion 1 of the brush is made from rubber type resin deformable along a line of teeth and has a slant angle. Accordingly, in cleaning deepest teeth, the tip 2 deforms along a gap between a moucous membrane of a mouth and a line of teeth to prevent generation of damage in the membrane, and the tip 2 reaches and slide in the rear portion of deeper teeth safely, thereby giving no cleaning error.
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