Toothbrush

Abstract

A high quality tooth brush softly and comfortably touching to teeth and gums, capable of providing high brushing feeling and massaging feeling and excellent dental plaque removing force, suitable for curing or preventing serious or slight periodontal disease and gingivitis, enabling the extraction of bristles since flocking strength is high and less causing cracking and whitening at a head part, wherein bristle bundles (5) formed by binding synthetic resin bristles (4) are implanted in implantation holes (3) in the head part (1). The cross sectional shape of the implantation hole (3) is formed in a circular hole with a diameter of 1.8 mm or longer or a hole with a size equivalent to the circular hole. The cross sectional shape of the synthetic resin bristles (4) implanted in the implantation holes (3) is formed in a circular shape with a diameter of 0.127 mm (5 mil) or less or a shape with a size equivalent to the circular shape. Also, the ratio (h/d) of the depth (h) of the implantation hole to the implantation hole (3) is set within the range of 1.7 to 2.5. In addition, the shortest distance between the implantation holes adjacent to each other is set to 0.1 to 0.4 mm.

Description

technical field [0001] The present invention relates to a toothbrush suitable for treating or preventing periodontal disease and gingivitis, which is soft and has good touch feeling, high brushing efficiency and massage feeling, and good plaque removal power. Background technique [0002] Conventionally, toothbrushes using animal hair (pig hair, raccoon hair, goat hair, and blends thereof) are known as toothbrushes having soft and thin bristles. It is made of bundles of animal hair about 1 to 8 mil thick. Because it is natural hair, the quality is not as stable as that of synthetic resin hair. [0003] In addition, as a toothbrush for the treatment or prevention of periodontal disease and gingivitis, a toothbrush with ultra-fine hairs at the tip is well-known, but this toothbrush with ultra-fine hairs at the tip uses tapered bristles that are thin and sharp at the tips, so it is less effective in treating gingivitis. In severe cases, patients may feel pain from stimulation ...

AI Technical Summary

Problems solved by technology

[0020] (1) As a toothbrush for the treatment or prevention of periodontal disease and gingivitis, a toothbrush that is soft and can massage the gums with a good touch feeling is required, but there is no toothbrush that satisfies this point sufficiently

[0021] (2) It needs to have a high calculus removal power, and can reach every corner of the oral cavity even with a weak brushing pressure, so that it can be used even by people with painful gums such as gingivitis patients, but this is not enough. toothbrush

[0022] (3) Toothbrushes with soft bristle strength used in the past generally have bristles with thin diameter bristles, and if they are too thin, the bristle strength becomes too weak, and it is difficult to obtain sufficient brushing force

[0023] (4) There are toothbrushes using natural hair as a toothbrush using a bundle of hairs made of mixed hairs of different diameters in order to achieve both softness and strength, but there are problems in terms of quality stabilization and cost

Therefore, it is very difficult to manage the bristle strength (bristle strength) of the product as a substitute characteristic value management of the number of bristles passing through each hole like a normal synthetic resin toothbrush, and it is necessary to use a ring crusher or a stretching machine, etc. The damage inspection is carried out by the measuring machine, and the quality control is difficult

[0025] (6) In the case of using small-diameter bristles, the strength of the flocking tends to be insufficient, and the bristles tend to fall off during brushing, shortening the life of the toothbrush

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