JP2000050958A - Toothbrush - Google Patents

Abstract

PROBLEM TO BE SOLVED: To extremely easily remove plaque at the side surface of a tooth in contact with an adjacent tooth and in the recessed part of a molar without regard to selecting a normal tooth brushing method or a special tooth brushing method by implanting the bunches of bristles consisting of long bristles and short bristles to a brush table. SOLUTION: In these bunches 3 of about thirty bristles of 11 mm length implanted by two lines of ten places in a center and respectively one line of nine places on both sides of it (at 4 lines made of 38 places in total) in the shape of the grids of the toothbrush on the market, about 15 bristles at the outer periphery of each bunch 3 are cut into 7 mm length to manufacture the toothbrush. Otherwise, among the bunches 3 of about thirty bristles of 11 mm in length implanted by three lines of eleven places in a center and respectively one line of nine places on an outermost part (five lines made of 51 places in total) in the shape of the grids of the toothbrush on the market, odd-numbered bunches 3 of outermost line are cut to be 7 mm in length and concerning inner lines, the bunches 3 of the bristles at a position forming a zigzag with the outermost line are cut to be 7 mm to manufacture the toothbrush. Thus, this tooth brush can contribute to maintaining the teeth of the nation and can contribute to the health of the nation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a toothbrush used for brushing teeth at home or in a hospital or the like at the time of washing a face in the morning, after breakfast or before going to bed, etc.

[0002]

2. Description of the Related Art Many toothbrushes that have been used for a long time have their bristles arranged in a plane. Using such a toothbrush, brushing the teeth back and forth as usual, brushing the teeth hardly reaches the side of the tooth between the teeth.
It was difficult to polish the side surfaces of the teeth, and it was difficult to reach the concave portions on the upper surface of the molars, and it was difficult to polish the concave portions of the molars. In order to solve such a problem, a brush in which only the tip of the toothbrush is cut into a mountain shape in accordance with the concave portion between the teeth has been developed and is commercially available. Further, as disclosed in Japanese Utility Model Laid-Open Publication No. 7-44412, a bundle of brush bristles arranged radially so as to reach a concave portion between teeth has been proposed.

[0003]

However, even if the teeth are brushed using a brush in which only the tips are aligned in a mountain shape in accordance with the recesses between the teeth, the brush bristles are not removed. It is difficult to remove even the plaque on the side surface of the tooth in contact with the adjacent tooth or the concave portion of the molar tooth, even if a toothbrush having radially arranged toothbrushes is used. Therefore, by changing the method of brushing the teeth using a toothbrush, instead of reciprocating the toothbrush and moving it up and down along the teeth as usual, the toothbrush is strongly pressed against the row of teeth and vibrates The method has become recommended. However, it was still difficult to remove the plaque on the side surfaces of the teeth in contact with the adjacent teeth and the plaque in the concave portions of the molars. In particular, in the case where the brush bristles are arranged radially, the bristles spread and gaps are formed, and the bristles hit the teeth obliquely and are easily bent, so that the bristles cannot be used in a short period of time. The problem to be solved by the present invention is that even with the conventional brushing method, or even with the above-mentioned special brushing method, it is very easy to remove plaque on the side surfaces of the teeth in contact with the adjacent teeth and the concave portions of the molars. To provide a toothbrush.

[0004]

Means for Solving the Problems In order to solve the above-mentioned problems, the present inventor has proposed a toothbrush (hereinafter referred to as a toothbrush) in which a bunch of long and short bristles is planted on a brush stand. A toothbrush (hereinafter referred to as a "second invention") wherein a bunch of bristle made up of long bristles and a bunch of bristle made up of short bristles are planted adjacent to each other on a brush stand.
A toothbrush (hereinafter referred to as a "third invention") in which a bunch of bristles made of bristles shorter than the center is planted in both outer rows of the brush stand.
A toothbrush according to the first invention or the second invention (hereinafter referred to as a "fourth invention"), wherein a bunch of bristles composed of bristles shorter than the central part is planted in both outer rows of the brush stand. )I will provide a.

[0005] The inventor asked the dentist to make a tooth model of the inventor and examined the relationship between the toothbrush and the tooth profile in detail along with actual trial experiments. Even if you use a toothbrush whose tips are aligned with the tooth row and cut it into a mountain shape, or if you use a toothbrush with bristles arranged radially, or instead of the conventional brushing method, Even with the method of vibrating by strongly pressing, it was found that the tip of the bristle tip did not reach the side of the tooth in contact with the adjacent tooth or the concave part of the molar, and as a result of various studies on the solution, the bristle was finally This completes the toothbrush according to the present invention, which reaches the side surfaces of the teeth in contact with the adjacent teeth and the concave portions of the molars.

[0006] The toothbrush according to the first invention is characterized in that a bunch of bristle composed of long bristle and short bristle is planted on a brush base. Normally, a toothbrush has 4 to 5 rows of 20 to 40 bristle bundles planted on a brush stand on the head, 6 to 11 in each row. The toothbrush according to the first invention is obtained by shortening some of the bristles in the bunch of 20 to 40 bristles. In this case, the shortening is
Any part in one bundle may be used. A specific example is shown in FIGS. In these figures, 1 is a head, 2 is a brush stand, 3 is a bundle of hairs, 4 is a long hair portion, 5 is a white portion.
The shaded area of is a short hair part. The example shown in FIG.
Long hairs are left in the center and the surrounding hairs are shortened. In this way, the surrounding short hairs act as sheaths to prevent the long hairs in the center from bending, and the long hairs in the center can easily be placed on the side of the tooth that touches the next tooth. And to the concave part of the molar. In the example shown in FIG. 2, half of the hairs constituting the bundle are shortened.
In this case as well, it is preferable that the short hairs be on the outside as much as possible. This serves to prevent long hairs from bending outward. In addition, the difference between the length of the long hair and the short hair is slightly longer than half the thickness of the teeth, or
It is sufficient that the depth is slightly longer than the depth of the central part of the molars or about 3 to 7 mm. In the toothbrush according to the first invention, a bundle composed of bristles having different lengths may be implanted in the brush stand from the beginning, or a toothbrush made by implanting a bundle of only long hairs in the brush stand may be manufactured. Alternatively, a part thereof may be trimmed as short hair.

A toothbrush according to a second aspect of the invention is characterized in that a bunch of bristle composed of long bristles and a bunch of bristle composed of short bristles are planted adjacent to each other on a brush base. As described above, a toothbrush is usually placed on a brush stand in a range of 20 to
A bundle of about 0 hairs is in 4 to 5 rows.
In the toothbrush according to the second aspect of the present invention, the length of each bristle is different, and the long and short bristle bundles are planted adjacent to each other. ing. The term “adjacent” means that the positions where the bristles of the brush are planted are adjacent to each other, and the bristles need not necessarily be in contact at the root. Also, the tips of the bristles of adjacent bunch of bristles may or may not be in contact with each other.

It is preferable that the long bristle bundle and the short bristle bundle are not lined up vertically and horizontally, respectively. Usually, when brushing teeth, grasp the handle and move it back and forth to move the brush bristle parallel to the dentition, or move it up and down to move the brush bristle parallel to the tooth axis,
If the bundle of long hairs or the bundle of short hairs are arranged in that direction, depending on the position where the toothbrush is applied to the teeth, the bundle of hairs may not contact the teeth at all. However, even if long or short bristle bundles are lined up in an oblique direction, there is no problem in normal brushing because the long and short bristle bundles frequently contact the teeth alternately. . From this point of view, FIGS. 3 to 5 show specific examples of the arrangement of long and short hair bundles. In these figures, 1 is a head, 2 is a brush stand, 6 is a white circle, a bundle of long hairs,
The hatched circle of is a bunch of short hairs. FIG. 3 is an example of a case where hair bundles are arranged in a lattice shape, and FIG. 4 is a case where hair bundles are arranged in an equilateral triangle and a long hair bundle or
FIG. 5 shows an example in which short bundles of hairs are arranged in a zigzag pattern. FIG. 5 shows a bundle of hairs arranged in an equilateral triangle, and a long bundle of hairs or a short bundle of hairs arranged diagonally. This is an example of the case where The toothbrush according to the second aspect of the present invention may be configured such that bundles having different bristle lengths are implanted in the brush stand from the beginning, or a part in which a bundle of longer bristle is implanted in the brush stand is manufactured. May be trimmed as short hair bundles.

A toothbrush according to a third aspect of the present invention is characterized in that a bunch of bristle made of bristle shorter than the central portion is planted in both outer rows of the brush stand. In this way, the short bristle bundles planted on both outer rows of the brush stand are used to prevent the bristles of the bristle planted inside from being bent outward. The bundle of hairs inside the short bundle of hairs may be a bundle of hairs of uniform length,
In addition, what kind of thing such as a thing of a kamaboko type, a thing of two peaks whose center is slightly lower, or a thing concerning the first invention, or a thing concerning the second invention? May be something. Also, this third
The toothbrush according to the invention may have the bristles with different bristle lengths implanted in the brush base from the beginning, but after making the longer bristles in the brush base, trim both outer rows to be shorter. Alternatively, the toothbrushes may be trimmed so as to form a semi-cylindrical shape or a double crest, or the outermost rows may be trimmed shortly after the toothbrush according to the first or second invention is manufactured.

[0010] In the case of a kamaboko type, when the teeth are brushed by rotating the hairs about the handle and moving the hairs in parallel with the tooth axis, it is possible to bring more hairs into contact with the teeth. By doing so, unlike a toothbrush in which brush bristles are radially arranged, the bristles have a high density of bristles and the bristles are not inclined, so that they are difficult to bend. Also, if used vertically and parallel to the tooth axis, it will be very easy to brush deep between the teeth. FIG. 6 shows a specific example. In this figure, 1 is a head, 2 is a brush stand, 6 is an open circle, 6 is a bundle of long hairs, 7 is a bundle of short hairs, 7 is a bundle of short hairs, and 8 is a bundle of shorter hairs. It is.

[0011] In the case of two peaks, when the central bristle bundle comes into contact with the teeth, the long bristle on both sides comes into contact with the side surfaces of the teeth, which is suitable for brushing the back of the side surfaces of the teeth. In particular, if it is used vertically and parallel to the tooth axis, it will be possible to extremely easily brush deep between the teeth. FIG. 7 shows a specific example. In this figure, 1, 2, 6, 7, and 8 indicate the same as in FIG.

A toothbrush according to a fourth aspect of the present invention is the toothbrush according to the first or second aspect of the present invention, wherein a bunch of bristles composed of bristles shorter than the center is planted in both outer rows of the brush stand. It is characterized by: In this invention, the length of the bristles of the bunch of bristles planted on both outer rows of the brush stand is the same or slightly smaller than the length of the short bristles of the toothbrush according to the first invention or the second invention. Shorter is preferred. FIG. 8 shows a specific example. In this figure, 1, 2, 6,
7 and 8 show the same thing as FIG. By adding such a device to the toothbrush according to the first invention or the second invention, a toothbrush that can completely remove plaque can be obtained in any usage. Note that this fourth
The toothbrush according to the present invention may be such that a bundle having a different bristle length is implanted in the brush base from the beginning, or a bundle of the longer bristle is implanted in the brush base, and then a part of the bundle is replaced with the short bristle. Or a shorter bundle.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Toothbrush according to the first invention A commercially available toothbrush in the form of a lattice having a length 11 planted at 10 places in two rows at the center and 9 places on each side on each side (total of 38 places in 4 rows).
As shown in FIG. 1, about 15 bristle bundles each having a length of about 30 mm, about 15 bristle hairs on the outer periphery of each bundle were cut into a length of 7 mm to manufacture a toothbrush according to the first invention. Using this toothbrush, we actually brushed the teeth and performed a test, and confirmed using a tooth model.Even if the short bristle around hit the surface of the tooth in front, the long bristle in the center was easy with a light force. It was confirmed that the plaque could be completely removed by reaching the back of the teeth and the posterior teeth.

2. Toothbrush according to the second invention A length 11 planted in a grid-like shape of a commercially available toothbrush at three places in the central part and nine places in each of the outermost rows (a total of 51 places in five rows).
In a bundle of about 30 mm hairs, as shown in FIG.
The outermost row of odd-numbered bristle bundles was cut to 7 mm, and the inner row was cut to 7 mm for the zigzag hand bundle at the inner row to produce the toothbrush according to the second invention. Using this toothbrush, the toothbrush was actually brushed and tested, and confirmed with a tooth model, it was found that even if the bunch of short hairs hit the surface of the front tooth, a little more force was required than the toothbrush according to the first invention. However, it was confirmed that the bundle of adjacent long hairs could easily reach the depth between teeth and the depth of molars, and that plaque could be completely removed therefrom.

3. Toothbrush according to the third invention A length 11 planted in a grid-like shape of a commercially available toothbrush at three places in the central part and nine places in each outermost row (a total of 51 places in five rows).
In a bundle of about 30 mm hairs, as shown in FIG.
Leave the center row as it is, and put a bunch of
mm, and each outer row (outermost row) was cut into 6 mm to produce the toothbrush according to the third invention. Using this toothbrush, brushing teeth and conducting tests and confirming with a tooth profile model, when rotating around the handle to move the hair parallel to the tooth axis and brushing the teeth, a large number of When the brush touches the teeth, the toothbrush is turned upright, the center of the brush is placed between the teeth, and the toothbrush is moved up and down in parallel with the tooth axis to brush the teeth. It reached the interdental area, and it was confirmed that plaque in the interdental area could be completely removed.

3 rows of central portions 11 in a grid shape of a commercially available toothbrush
As shown in FIG. 7, in a bundle of about 30 hairs of 11 mm length planted at 9 places and 1 row at the outermost position (51 places in 5 rows), as shown in FIG. The toothbrush according to the third invention was manufactured by cutting the bundle of hair into 9 mm, leaving each row on both sides as it was, and cutting each outer row (outermost row) into 6 mm. Using this toothbrush, brush the teeth and perform a test, confirm with a tooth profile model, turn the toothbrush vertically, touch the center of the brush to the tooth, move the toothbrush up and down parallel to the tooth axis When the teeth are brushed, the long hairs on both sides reach the interdental area, and there are two rows of long hair bundles. It was confirmed that plaque in the interdental region could be completely removed.

4. Toothbrush according to the fourth invention A length 11 planted in a grid-like shape of a commercially available toothbrush in three rows at the central part and nine places at the outermost one row (a total of 51 places in five rows).
In a bundle of about 30 mm hairs, as shown in FIG.
The middle row cuts even-numbered hair bundles into 7 mm, each row on both sides cuts odd-numbered hair bundles into 7 mm, and all outermost 1-row hair bundles are cut into 5 mm. Thus, the toothbrush according to the fourth invention was manufactured. Using this toothbrush, I actually brushed my teeth and did a test and confirmed it with a tooth model,
Regardless of the method of brushing the teeth, it was confirmed that any bristle bundle reached the interdental region or the depth of the molars and that plaque could be completely removed.

[0018]

Since the toothbrush according to the present invention has the above-described structure and operation, it can remove even the plaque of the side of the tooth in contact with the adjacent tooth and the plaque of the concave part of the molar tooth, and can make the teeth of the people healthy. It greatly contributes to maintaining
Maintaining healthy teeth greatly contributes to the health of the people.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a first embodiment of a toothbrush according to a first invention.

FIG. 2 is an explanatory view of a second embodiment of the toothbrush according to the first invention.

FIG. 3 is an explanatory view of a first embodiment of a toothbrush according to a second invention.

FIG. 4 is an explanatory view of a second embodiment of the toothbrush according to the second invention.

FIG. 5 is an explanatory view of a third embodiment of the toothbrush according to the second invention.

FIG. 6 is an explanatory view of a first embodiment of the toothbrush according to the third invention.

FIG. 7 is an explanatory view of a second embodiment of the toothbrush according to the third invention.

FIG. 8 is an explanatory view of one embodiment of the toothbrush according to the fourth invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Head 2 ... Brush stand 3 ... Bundle of hair 4 ... Long hair part 5 ... Short hair part 6 ... Long hair bundle 7 ... Short hair bundle 8 ... Even shorter hair bundle

Claims (4)

[Claims] 1. A toothbrush wherein a bunch of long and short bristles is planted on a brush base. 2. A toothbrush wherein a bunch of long hairs and a bunch of short hairs are planted adjacently on a brush base. 3. A toothbrush, wherein a bunch of bristle made of bristle shorter than a central part is planted on both outer rows of the brush stand. 4. The toothbrush according to claim 1, wherein a bunch of bristle made of bristle shorter than the central part is planted on both outer rows of the brush stand.