| 摘要 |
PROBLEM TO BE SOLVED: To heighten the massage effect for gingiva, not only eliminating dental plaque but also preventing periodontitis and periodontal disease often occurring in the middle and advanced age by making the brush density higher than that in the conventional planted toothbrush. SOLUTION: A manufacturing method for a toothbrush is changed from planting to welding, whereby it is possible to obtain a toothbrush, which can be increased in brush density to eliminate the dental plaque in an oral cavity and make massage for gingiva at the same time. In addition to the above, the brush dispenses with metallic bristle stopping plate in the structure, so that it can be formed of resin simple body to be recycled, and also a metal piece is not put in the oral cavity to be improved in safety and sanitation. COPYRIGHT: (C)2007,JPO&INPIT
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