JPH10234472A - Toothbrush - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently brush the internal space of a periodontal pocket, particularly a periodontal pocket formed at an interdental part, and facilitate the symptom improvement of gingivitis or periodontitis. SOLUTION: A brush 1 having only one row of bristle bundles 10 is attached to one lateral end of a handle 2, thereby forming a toothbrush. In this case, bristle length H is equal to or shorter than 12mm, and brush length L is equal to or shorter than 20mm. Also, brush width W is equal to or smaller than 2mm. A step is formed on a brush forward edge along the lengthwise direction of the brush via the mixture of bristles having different length. As a result of limiting the bristle length, teeth can be brushed in such a manner as free from hindrance by the oral cavity mucous membrane. Also, molar teeth can be carefully brushed one by one consciously, and at the same time, even a periodontal pocket at an interdental part can be brushed. Furthermore, the ends of the long bristles can enter the periodontal pocket without being hindered by other bristles, due to the formation of the step.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a toothbrush for brushing teeth, and more particularly to a toothbrush provided with a brush having only one row of bristle bundles.

[0002]

2. Description of the Related Art Some toothbrushes include a brush having a single row of bristle bundles. 3-72
This type of toothbrush disclosed in Japanese Patent Application Laid-Open No. 721 can apply a brush only to the tooth surface and can reduce irritation to the gums. In addition, when suffering from gingivitis or periodontitis, a gap called a periodontal pocket is formed between the tooth and the gum, but regarding the brushing in the periodontal pocket,
The toothbrush having only one row of bristle bundles can be more suitably used than a toothbrush including a brush having multiple rows of bristle bundles.

[0003]

However, in the technique disclosed in the above publication, the length of the bristle in the brush is uniform, and it is not efficient in cleaning the periodontal pocket. It is difficult to improve the symptoms. The present invention has been made in view of such a point, and an object of the present invention is to enable efficient cleaning of the above-mentioned periodontal pocket, particularly the periodontal pocket generated in the interdental portion, thereby enabling gingival tissue. An object of the present invention is to provide a toothbrush capable of promoting the improvement of symptoms of inflammation and periodontitis.

[0004]

According to the present invention, there is provided a toothbrush in which a brush having only one row of bristle bundles is provided on one side of a handle, and the length of the bristles is 12 mm or less. Length is 20mm or less, brush width is 2mm
In addition to the following, it is characterized in that a step is provided on the brush tip surface in the longitudinal direction of the brush by a mixture of bristles having different lengths.

By setting the hair length to 12 mm or less, tooth brushing can be performed without disturbing the oral mucosa, and by setting the brush length to 20 mm or less, that is, about one back tooth. By setting the length, it is possible to carefully brush the periodontal pocket with consideration for each back tooth, and by setting the width of the brush to 2 mm or less, the density of hairs is reduced and narrow. The tip of the bristle can be easily inserted into the periodontal pocket which is a space, and by providing a step, the tip of the long bristle can be prevented from entering the periodontal pocket by other hairs. It was made.

At this time, if the longest bristle is arranged at both ends in the longitudinal direction of the brush row, it becomes easier to put the long bristle in the periodontal pocket. In addition, it is effective that the ratio of the length of the shortest hair to the length of the longest hair is 0.8 or less, which is effective in facilitating the insertion of the long hair into the periodontal pocket. If hairs are provided, it is possible to correspond to periodontal pockets having different depths.

[0007] If a flat portion made of bristle with a short length is arranged between portions where the side surface shape of the end portion of the brush row is a mountain-cut shape, the hair has a mountain-cut shape. It is possible to prevent the long part of the tooth from entering the periodontal pocket too much.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described. As shown in FIG. 1, a brush 1 provided on a side surface of one end of a handle 2 is provided with a single row of hair bundles 10. The hair bundles 10 formed only of long hairs are arranged between the hair bundles 10 formed only of short hairs.

In the brush shown in FIG. 2, the tip of each bristle bundle 10 is formed in a diagonal truncated shape when viewed from the side, so that the length of each bristle bundle 10 in the longitudinal direction of the brush 1 is gradually increased. The length of the longest hair and the shortest hair are different from each other by about 2 to 4 mm.
The brush shown in FIG. 3 is one in which long bristle is arranged at both ends and the center in the longitudinal direction of the brush 1 and short bristle is arranged therebetween. The bristle bundle 10 at the center in the longitudinal direction of the brush 1 has the same length. But
The bristle bundles 10 at both ends in the longitudinal direction of the brush 1 have a mountain-cut shape, and at the same time, the longest bristle is located at both longitudinal ends of the brush 1, and the shortest of these bristle bundles 10 whose length is sequentially reduced in the longitudinal direction. The bristles are matched to the length of the bristles in the bristle bundle 10 with only short bristles.

In the brush shown in FIG. 4, long bristle bundles 10 are arranged at both ends of the brush 1 in the longitudinal direction, and short bristle bundles 1 are arranged between the bristle bundles 1.
0 is arranged so that the end face of each hair bundle 10 is flat. In the one shown in FIG.
0 and the bristle bundles 10 having short bristle are alternately arranged, and the bristle bundles 10 having long bristle are located at both ends in the longitudinal direction of the brush 1.

The brush shown in FIG. 6 is similar to the brush shown in FIG. The brush 1 is provided with a longer one and a shorter one, and long hairs are provided at both ends in the longitudinal direction of the brush 1. Further, the hair bundle shown in FIG. 7 has a hair bundle 10 made of short hairs and having a flat end portion between the hair bundles 10 having a mountain-cut shape.

Although some examples have been shown, in any case, the length L of the brush 1 having only one row of the hair bundles 10 is 20.
mm and the width W is 2 mm or less. By setting the length of the brush to 20 mm or less and the length of about one back tooth, it is possible to carefully brush the periodontal pocket while considering each back tooth, and By setting the width of the brush to 2 mm or less, the density of the bristles is reduced, and the tips of the bristles can be easily inserted into the periodontal pocket, which is a narrow space. The length H of the longest hair is 12 mm or less. This is because the tooth brush can be performed without disturbing the oral mucous membrane.

The step S at each end of the long hair and the short hair is 2 mm or more because the short hair does not prevent the tip of the long hair from entering the periodontal pocket. Preferably, the ratio of the length of the shortest hair to the longest hair is set to 0.8 or less, especially considering that the length of the long hair is 12 mm or less. Long hair can be easily inserted into the periodontal pocket, and the tip of the long hair can be prevented from entering the periodontal pocket by other hairs.

If the step S is too large, long hairs may enter the periodontal pocket too much. Here, when the tip of the hair bundle 10 has a mountain-cut shape, for example, there are hairs of various lengths having a length difference of 4 mm or less. Each can be made to correspond.

If the long bristle is arranged at both ends in the longitudinal direction of the brush 1, it becomes easier to put the long bristle in the periodontal pocket. Further, if a flat portion made of bristle with a short length is arranged between portions where the side surface shape of the tip portion of the brush 1 is a mountain-cut shape, that is, as shown in FIG. The short hair portion can prevent the long portion of the cut hair from excessively entering the periodontal pocket.

The tip of each bristle 11 in the bristle bundle 10 may have a tapered tip as shown in FIG. 8 (a) or a rounded tip as shown in FIG. 8 (b). However, it is also preferable that the long bristle 11 is tapered and the short bristle 11 is round. Since long hairs are placed in the periodontal pocket, they are tapered to make it easier to put them in the periodontal pocket, and short hairs are rounded to reduce irritation to the gum surface.

[0017]

As described above, according to the present invention, in a toothbrush in which a brush having only one row of bristle bundles is provided on the side of one end of a handle, the bristle length is 12 mm or less.
The length of the brush is 20 mm or less, the width of the brush is 2 mm or less, and the bristles of different lengths are mixed to form a step in the brush tip surface in the longitudinal direction of the brush. In addition to being able to brush teeth without worrying, it is also possible to carefully brush the periodontal pocket while considering each back tooth, and at the same time, easily insert the tip of the bristle into the narrow periodontal pocket. In addition, the tip of the long bristle does not enter the periodontal pocket without being disturbed by other hairs, so that the periodontal pocket can be efficiently cleaned.

At this time, by arranging the longest bristle at both ends in the longitudinal direction of the brush row, it becomes easier to put the long bristle in the periodontal pocket, and the cleaning efficiency of the periodontal pocket can be further increased. it can. Further, in view of the depth of the periodontal pocket, the ratio of the length of the shortest bristle to the longest bristle is set to 0.8 or less, so that the inside of the deep periodontal pocket can be brushed.

If hairs of various lengths with a difference of 4 mm or less are provided, it is possible to correspond to periodontal pockets having different depths. In the case where a flat portion made of bristle with a short length is arranged between portions where the side surface shape of the tip end portion of the brush row has a mountain-cut shape, the long portion of the hair having a mountain-cut shape Can be reliably prevented from getting too far into the periodontal pocket with short bristles having a flat tip.

[Brief description of the drawings]

FIG. 1 shows an example of an embodiment of the present invention, in which (a)
Is a partial front view, and (b) is a partial side view.

FIG. 2 shows another example of the above, wherein (a) is a partial front view,
(b) is a partial side view.

FIGS. 3A and 3B show still another example of the above, wherein FIG. 3A is a partial front view and FIG. 3B is a partial side view.

4 shows another example of the above, wherein (a) is a partial front view and (b) is a partial side view. FIG.

FIG. 5 shows still another example of the above, wherein (a) is a partial front view and (b) is a partial side view.

FIGS. 6A and 6B show different examples of the above, wherein FIG. 6A is a partial front view and FIG. 6B is a partial side view.

7 shows still another example of the above, wherein (a) is a partial front view and (b) is a partial side view. FIG.

8A and 8B show examples of the tip shape of the above hair, wherein FIG. 8A is a side view of one example, and FIG. 8B is a side view of another example.

[Description of Signs] 1 brush 2 handle 10 hair bundle

Claims (5)

[Claims] A brush having only one row of bristle bundles is a toothbrush provided on a side surface of one end of a handle, and has a bristle length of 12 mm or less, a brush length of 20 mm or less, and a brush. A toothbrush having a width of not more than 2 mm and a step in the brush tip surface in the longitudinal direction of the brush due to a mixture of bristles having different lengths. 2. The toothbrush according to claim 1, wherein longest bristles are arranged at both ends in the longitudinal direction of the brush row. 3. The toothbrush according to claim 1, wherein the ratio of the length of the shortest hair to the longest hair is 0.8 or less. 4. The toothbrush according to claim 1, wherein bristles of various lengths having a difference of 4 mm or less are provided. 5. The brush according to claim 1, wherein a flat portion made of bristle having a short length is provided between the portions where the side surface shape of the end portion of the brush row has a mountain-cut shape. Crab toothbrush.