Toothbrush

Abstract

A tooth brush which is excellent in durability and can give a high massaging effect to a person even with weak gum with a low stimulus and without damaging the gum in various tooth brushing methods, especially in a bath method. The tooth brush comprises bristles (4) implanted on an implanting mount (20), wherein thermoplastic elastomer bristles (41, ----) are implanted in a width-direction inner side region (R1) of the implanting mount (20) and synthetic resin bristles (42, ----) harder than the thermoplastic elastomer bristles are implanted in width-direction opposite outer side regions (R2, R3) of the implanting mount (20) respectively. Especially, each bristle bundle (5) implanted on the mount (20) is so cut that bristles (4) are continuously or stepwise shorter from the inner side toward the outer side in the width direction.

Description

technical field [0001] The present invention relates to toothbrushes. Background technique [0002] Proposed before in the width direction outer region of the hair-planting platform of toothbrush, implants the soft bristle of polyester thermoplastic elastomer etc., and implants hard bristle such as nylon on the inner region, mainly as horizontal brush (rotation ( (rolling) method), utilize the hard bristles in the inner area to maintain the cleaning effect, and utilize the soft bristles in the outer side to reach the toothbrush that massages the effect of the gingiva (refer to patent documents 1, 2). [0003] However, in the method of brushing teeth, besides the rotating method, there are various methods such as the scrubbing method and the Belleville method, and it is necessary to use the advantages of each method in combination. In particular, the Belleville method is a method of finely vibrating the toothbrush and the gums at an angle of 45°. It is a cleaning method with...

AI Technical Summary

Problems solved by technology

In particular, the Belleville method is a method of finely vibrating the toothbrush and the gums at an angle of 45°. It is a cleaning method with a relatively high cleaning effect on the alveolar where tartar is easy to accumulate. When using the above-mentioned toothbrush, the hard bristles in the inner area will be damaged gums, not for people with weak gums

[0004] In addition, when the above-mentioned toothbrush is brushed horizontally, the soft bristles in the outer area can massage the gums, but after use, the soft bristles will spread outward in a short period of time, and there is a problem in durability.

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