JP6695073B2 - Loop brush - Google Patents

Description

    The present invention relates to a brush in which brushes radially arranged from a shaft are attached to a handle in a loop shape.

The multi-bracket method is widely practiced in orthodontic treatment. In this multi-bracket method, the bracket is directly bonded to the tooth, and the orthodontic wire is fixed to the bracket by ligature wire or elastic, so even if you try to clean with a general toothbrush, the teeth around the inner bracket of the wire Cleaning the surface is difficult. During orthodontic treatment, wires and brackets block stimulation of the buccal maxillary muscle and mandibular glossus muscle, and since the self-cleaning action of food and saliva does not work, it tends to become a caries-prone site, so cleaning is especially important. Is. In addition, if caries occurs around the bracket during orthodontic treatment, it is difficult to perform end caries treatment, so in addition to commonly used toothbrushes and interdental brushes, metal parts of orthodontic appliances such as Japanese Patent No. 3615752 can be used. An interdental brush or a brush-like flocked brush that does not cause a feeling of discomfort even when hit is used as an auxiliary device.
No. 3615752

    As mentioned above, since the flow of food is obstructed around the bracket during orthodontic treatment and self-cleaning action cannot be expected, it is easy to cause plaque deposits.In addition, when cleaning with a general toothbrush, around the bracket under the orthodontic wire. It is difficult to remove plaque, and oral cleaning work during the correction period requires a great deal of labor. Therefore, during orthodontic treatment using the multi-bracket method, an interdental brush, a brush-like flocked brush, etc. are used as an auxiliary device for cleaning the bracket surroundings, but all of these devices basically have a sectional shape. Has a circular shape, it is necessary to polish each bracket of each adjacent tooth in order to clean the flat substantially isosceles triangular void formed by the wire and the adjacent tooth when viewed from the long axis direction of the tooth. Since the human dentition is composed of 14 teeth, the total of the interdental parts of the 13 parts of one jaw is 26 parts in the upper and lower parts. If it is cleaned, the cleaning work will be performed 52 times. In addition, since the distance between brackets in the dentition differs depending on the site, it is difficult to brush by simply inserting and removing using a brush of a single shape.

  In view of the above situation, the present invention aims to provide a cleaning tool that enables easy and reliable cleaning around the orthodontic appliance during orthodontic treatment, and a method for manufacturing such a brush.

  The present invention relates to a brush most suitable for cleaning the tooth surface around the bracket during orthodontic treatment. The above object is achieved by the inventions described in the claims. That is, when viewed from the longitudinal direction of the tooth, it is composed of brackets and wires that are bonded to the tooth surfaces of both adjacent teeth, the bottom side is the wire side, and the apex is the contact point of both adjacent teeth. The present invention is made to provide a toothbrush that deforms exactly into a triangular void and is capable of automatically controlling plaque by simply inserting and removing the brush. That is, the first invention is of any length. A loop-shaped tip that improves the stress deformation value near the loop tip away from the fixed part by making both ends of the brush in which the wires are arranged radially from the elastic shaft cut into a fixed shape fixed to the handle If the part is inserted into the space of the above-mentioned isosceles triangle shape, the approximate center part of the loop automatically adapts to the brackets and tooth surfaces on both sides due to the elasticity of the shaft material, and the repulsion of the shaft material By a toothbrush constituting the looped brush form that is pressed against the tooth surface immediately below each side bracket. Further, the toothbrush is fixed to the handle at an arbitrary distance and angle of both end fixing portions in order to optimize the shape and stress deformation value of the loop shaft portion for the cleaning target portion.

  The second invention is formed into an arbitrary shape by permanently deforming an arbitrary portion between the shaft shaft both side fixing portions of the brush of the loop shape brush of the first invention, or is made of a resin material. In the case, by heat setting in a range that does not cause plastic deformation of the resin shaft material, the loop shape is O-shaped, inverted V-shaped, substantially diamond-shaped, inverted U-shaped, keyhole-shaped, An arbitrary shape such as a filament shape can be preliminarily formed by molding in an arrow shape, an Ω shape, or an arbitrary indefinite shape, or by three-dimensionally molding in addition to various shaft molding shapes on a plane including the shaft fixing portion. It is a toothbrush given. In addition to the deformation of the shaft itself, the fixing angle of the shaft ends of the brush is changed three-dimensionally, or the shaft member is twisted three-dimensionally to give the shaft both ends a handle. It can also be reproduced by the fixing method.

  A third aspect of the present invention makes it possible to change the shaft fixing angle by deforming the handle of the first invention or the second invention by acupressure during use, or a loop-shaped shaft both ends shaft fixing portion. This is a toothbrush which changes the position to freely change the distance between both ends of the shaft to widen or reduce the distance to the shaft fixed portion of the brush to change the loop shape of the brush.

  A fourth invention is a toothbrush in which both shaft ends of a brush are fixed to separate handles.

  Specifically, through the above invention, the loop shape is deformed by utilizing the permanent deformation of the brush, or both ends of the shaft are fixed to the handle in a state where internal stress is generated by further twisting the shaft material, or A toothbrush that forms the waist strength and each loop shape of the loop brush as a whole by a selected combination of a fixed angle and the elastic coefficient of the brush. To change the fixed angle and position of both ends of these brushes, rotate the handle part or slide mechanism using elasticity to fold the brush part narrowly when inserting and clean the brush part when inserting it to the target position. It is a toothbrush that expands to fit the part and can be cleaned easily by simply inserting and removing the brush.

  According to the method and the characteristic configuration of the spherical brush according to the present invention, the following effects can be obtained. The first aspect of the present invention is the easiest to insert due to the elasticity of the shaft member of the radial brush in which both ends of the brush in which wires are arranged radially from the elastic shaft cut to an arbitrary length are fixed to the handle in a loop shape. By simply inserting it at the contact point between the brackets between the two adjacent teeth, the loop is formed in the gap near both sides of the bracket, which corresponds to the base of the approximately isosceles triangular shape that is narrowly compressed when viewed from the long axis direction of the tooth. The brushes near the center are automatically pressed against each other and fit well, so with a substantially circular brush brush or interdental brush, after intentionally inserting the brush like a brush, consciously press the brush toward the brackets on both sides. Without any need, the surroundings of the brackets on both sides of the wire at one time and the loop apex fit to the interdental area without excess or deficiency. Since it is not necessary to consciously apply pressure to the target site for brushing, it is possible to improve the cleaning effect simply by removing and inserting the brush. These effects are due to the fact that when a loop-shaped brush is inserted under the wire between both adjacent tooth brackets, the loop shaft material with appropriate elasticity is deformed, and the brush of the loop width part is pressed against both adjacent tooth brackets. To be reached. In addition, the contact area of both adjacent teeth and the tooth surface under the wire that hits the apex of the triangular void formed by the orthodontic wire and both adjacent teeth are automatically adjusted by the elasticity of the brush bristles from the loop widest part to the loop tip. Plaque control becomes possible.

  When a conventional interdental brush with a stainless steel shaft is used for the same cleaning work, if it is inserted between the brackets from the crown direction, the rigid brush shaft tip comes into contact with the gingiva, which causes less pain and may cause damage. However, since both ends of the toothbrush of the present invention are fixed to the shaft portion, the tip of the shaft portion has an effect of not injuring the gingiva and causing pain unlike the exposed metal torsion brush.

  If a soft material is used for the shaft material in order to improve the usability of a general interdental brush under the same usage conditions during cleaning, it will interfere with the bracket and wires when it is inserted into the target site, and It is difficult to insert into a narrow target area. In addition, if the brush shaft is used while being pressed against a narrow space when cleaning the area around the bracket under the wire after insertion, the brush shaft will be broken and cannot be cleaned.

  As shown in Table 1, this is a phenomenon that occurs in the interdental brush shaft material with one end fixed because the stress deformation resistance value decreases in proportion to the square of the distance from the fixed portion. In other words, it hits the gingiva. When using a flexible shaft material that does not feel pain when you do it, it is unavoidable from the physical characteristics that when you insert it in a narrow area where the brush hair receives resistance at the time of insertion, the hip break occurs again . However, with the brush of the present invention in which the shaft portion is looped, even if the shaft material is not liable to damage the gingiva and cause pain when hitting the gingiva, both ends of the shaft are fixed to the handle in a loop shape. As a result, the physical stress deformation resistance value is improved by about 2.5 times or more and good shape-resilientness is exhibited, so that the flexibility of the brush as a whole is not impaired.

  Furthermore, in particular, the loop-shaped toothbrush of the present invention has the entire shaft portion covered with soft brush bristles without exposing the tip end portion of the shaft like a conventional interdental brush, so that the gum can be applied to the gum from a degree angle. Hitting does not hurt the soft tissue or cause pain.

  In addition, whether it is molded into an O shape, an inverted V shape, a substantially rhombic shape, an inverted U shape, a keyhole shape, an arrow shape, an Ω shape, or any indefinite shape of the second invention. In addition, a toothbrush formed by adding a three-dimensional element to each of the above-described shapes to form various arbitrary shapes produces the following convenience according to the various shapes. In the inverted V-shaped toothbrush as in the one embodiment, since the brush width increases as it approaches the handle, the narrow tip is easily suitable for insertion of the intended cleaning portion, and further insertion is required. As the brush advances, the overall width of the brush increases, and the tooth surfaces directly under the brackets on both sides are pressed against each other to enable efficient cleaning work. If this shape is made into a substantially rhombic shape, the tip end is suitable for insertion of the cleaning portion, but the width decreases at the portion beyond the central widest part, so the brush bristles do not only occur during insertion but also during extraction cleaning operation. Since it is pressed against the bracket, it is possible to perform cleaning work by inserting it from one direction.

  In addition to the convenience when inserting with the inverted V shape, the brush shaft shape is O shape, inverted V shape, approximately rhombus shape, inverted U shape, keyhole shape, arrow shape, Ω shape Or, by shaping the brush into an arbitrary indefinite shape, brush bristles can be attached to the tooth surfaces in the immediate vicinity of the bracket on both sides of the interdental part not only when the cleaning target portion is inserted but also when the pulling operation is performed. It can be pressed and expected for efficient cleaning work.

  When the tip and the gingiva interfere with each other when the tip portion is inserted into the cleaning portion from the root direction, the inverted V shape is formed into a curved surface on the plane forming the loop brush shaft as shown in Fig. 2-E. The toothbrush can prevent interference with the gingiva when the toothbrush is inserted from the tooth root direction.

Further, when a resin material with a low supple stress deformation resistance is used for the shaft portion, in addition to the variation of the fixing angle of the brush, if the brush shaft member is fixed while being twisted when fixing both ends of the brush shaft, Since the internal stress generated according to the elastic coefficient of the material is accumulated inside the shaft material, it becomes possible to control the rigidity of the shaft portion to a desired stress deformation value.
In addition to the above-mentioned inverted V-shape, substantially rhombus shape, O-shape, inverted U-shape, Ω shape, or arbitrary indefinite shape, in addition to using a soft shaft material made of resin If it is, it is possible to preform a loop shaft toothbrush with a complicated shape depending on the cleaning work site such as keyhole type, arrow type, etc. by heat setting within the plastic deformation allowable range of the resin material. .. By changing the fixed angle at both ends of the brush shaft of this preforming process three-dimensionally, it is possible to form a three-dimensional toothbrush with a more complicated brush shape such as a spiral shape with a three-dimensional twist and a filament shape. ..

  A third aspect of the invention is to change the angle, distance or both of the fixed parts with respect to the handle at the ends of the various brush shafts of the first invention or the second invention by deforming the handle by hand pressure during cleaning and use. Since the total width (shape) of the brush can be changed by narrowing the total width of the brush at the time of insertion to reduce the insertion resistance and making it easier to insert the brush into a narrow area, and after the insertion, expand the overall width of the loop-shaped brush to make it It is possible to clean the tooth surface directly below the bracket at once.

  In the toothbrush with the shaft holding portion of the handle divided into two as in the fourth aspect of the invention, the entire width of the loop-shaped brush can be changed depending on the holding position of each handle, so it can be adapted to the distance between brackets depending on the part. In addition to the repulsive force of the shaft material of the loop brush of the first invention, the repulsive force of the handle that holds both ends of the shaft causes the brush bristles to be pressed against the brackets immediately below both adjacent tooth wires with an appropriate force, and the loop shape It is possible to achieve sufficient plaque control by simply inserting and removing it while maintaining the above.

  In addition, since both ends of the brush shaft are fixed to separate handles, this toothbrush inserts and passes one of the handles from the buccal side to the lingual side of the interdental hourglass gap of the adjacent teeth on both cleaning target sites. If used, even if the shaft material is soft and supple, it can be easily inserted into a narrow interdental space without breaking. One of the stalks that penetrates the interdental interstitial space is returned from the occlusal side to the buccal side, bundled and held with the other stalk, and the interdental interstitial space is slid by hand pressure in the buccolingual direction. Can be cleaned. As mentioned above, the shaft part of this brush has a bare tip like the general interdental brush, and the soft and supple shaft part has brush hairs for cleaning. Unlike the interdental brush of metal wire, it does not cause pain and damage to the gums during cleaning, and it causes discomfort due to rubbing between metals that occurs when the twisted part of the shaft metal wire rubs against a tooth or prosthesis. do not do. Furthermore, since both ends are fixed by the respective handles, the cleaning pressure by the brush bristles can be easily controlled by hand pressure.

  As described above, according to the above-mentioned invention, it is possible to manufacture the twisted brush in various loop shapes according to the shape of the cleaning target portion. Therefore, it is possible to provide a brush having a wide range of uses not only as a dental oral cavity forming product but also as a cosmetic applicator or a face-washing brush, or as a cleaning / polishing device in the general industry association.

The perspective view which shows the loop-shaped brush which attached the loop-shaped torsion brush of this invention to the wavy-shaped handle which is easy to hold with fingers. The figure which shows the toothbrushes of Examples A, B, C, D and E in which both ends of the shaft of a brush in which the shaft material is preformed into various shapes are fixed at respective fixing angles and positions. The figure which shows the toothbrushes of Examples A, B, C, D and E in which both ends of the shaft of a brush in which the shaft material is preformed into various shapes are fixed at respective fixing angles and positions Normally, both ends of the loop-shaped torsion brush fixing portion of the present invention are spaced apart as in A, but when the handle is compressed in the C direction, it is deformed like B and both ends of the loop-shaped torsion brush fixing portion approach. Perspective view showing a looped brush whose loop shape changes Normally, both ends of the loop-shaped torsion brush fixing portion of the present invention are close to each other as in A. However, when the handle is compressed in the C direction, it is deformed like B and both ends of the loop-shaped torsion brush fixing portion are separated. Perspective view showing a loop-shaped brush whose loop shape changes By sliding the handle in the direction e as shown in B from the state where both ends of the loop-shaped twisted brush fixing part of the present invention are close to each other as in A, both ends of the loop-shaped twisted brush fixing part are separated to form a loop shape. Perspective view showing changing loop brush Cross-sectional view of the tip of the handle showing a state in which the loop-shaped brush whose loop shape changes from FIGS. 2 to 4 is used between brackets during orthodontic treatment. The loop-shaped torsion brush fixing portion of the present invention is attached to one end of a freely rotating handle, and the other end is attached to the handle holding portion of the loop-shaped torsion brush inserted between brackets during orthodontic treatment for use. Perspective view of the handle showing the state A perspective view showing a toothbrush in which shaft ends of a twisting brush are attached to respective individual handles The figure which shows the use procedure of the toothbrush which bundles both patterns and cleans them with brush bristles after passing one pattern of the toothbrush of FIG. 9 through the tooth flank side of a wire. FIG. 1 is a diagram showing a state in which the loop shape changes and fits depending on the insertion depth when the toothbrush is used between brackets during orthodontic treatment. One of the toothbrushes shown in FIG. 9 is a toothbrush having a handle attached so that the shaft 2-fixed part 2a and the shaft 1 fixing part are directed in the direction opposite to the toothbrush of FIG. A diagram showing the procedure for using a toothbrush that passes both sides of the handle and then cleans them with bristles.

  1, twist brush shaft 2, handle 2-a handle, 2-b, handle 3, brush 4, compression part 5, slide groove 6, tooth 7, straightening bracket 8, straightening wire 9, wire fixing ring

  Hereinafter, embodiments of the present invention will be described together with illustrated examples.

1 to 11 show an example of an embodiment for carrying out the present invention. In the drawings, the parts denoted by the same reference numerals as those in the drawings represent the same things, and the basic configuration is the same as the conventional one shown in the drawings. Similarly, the basic characteristic feature of the loop-shaped twisting brush of this illustrated example is that a wire rod is radiated from an elastic shaft cut to an arbitrary length as shown in the embodiment of FIG. It is a toothbrush in which both ends of the arranged brushes are fixed to the handle in a loop shape. When brushing around the brackets on both adjacent tooth brackets during orthodontic treatment using a conventional general interdental brush, consciously position the brush around the bracket directly below the brush wire, and then remove and insert the brush on it. Therefore, it is difficult to perform efficient brushing because it is forced to perform two kinds of motions of rubbing the bristles on the bracket. However, in the toothbrush of the present invention, due to the elasticity of the shaft member of the radial brush, as shown in FIG. 11, the loop tip of the brush 3 is positioned on the tooth flank side of the orthodontic wire between the brackets of both adjacent teeth, and the position of f is set. Just by inserting the tip of the loop-shaped brush 3 from the position to the position of h, the end of the brush 3 is pressed and deformed on both side brackets like g, and is inserted to the position of h while brushing the bracket end side. Next, when this brush is pulled out toward the cut end side, the brush 3 which has been compressed and deformed can automatically brush around the bracket on the meat side. Furthermore, this action is applicable not only to the brushing around the bracket, but also to the contact point of the tooth, which corresponds to the apex of a substantially isosceles triangular shape that is narrowed in the longitudinal direction of the tooth. It is pressed and exerts a cleaning effect.
Therefore, unlike conventional interdental brushes and brush-shaped brushes, it is not necessary to consciously apply pressure to the target area for brushing, so it is possible to improve the cleaning effect simply by inserting and removing the brush. Become.

  As shown in Table 1, this is a phenomenon that occurs in the interdental brush shaft material with one end fixed because the stress deformation resistance value decreases in proportion to the square of the distance from the fixed portion. In other words, it hits the gingiva. When using a flexible shaft material that does not feel pain when you do it, it is unavoidable from the physical characteristics that when you insert it in a narrow area where the brush hair receives resistance at the time of insertion, the hip break occurs again .. However, with the brush of the present invention in which the shaft portion is looped, even if the shaft material is not liable to damage the gingiva and cause pain when hitting the gingiva, both ends of the shaft are fixed to the handle in a loop shape. As a result, the physical stress deformation resistance value is improved by about 2.5 times or more and good shape-resilientness is exhibited, so that the flexibility of the brush as a whole is not impaired.

Further, as shown in FIG. 2, the loop-shaped brush has various shapes such as the O-shape shown in A and the Ω shown in B by changing the joining position and the joining angle of both ends of the shaft 1 with respect to the handle 2. It is possible to reproduce a shape, an inverted V shape as shown in C, and a substantially rhombic shape as shown in D. In addition, as shown in E, the inverted V-shape that is preformed so that the shaft 1 forms a curved surface on the plane forming the loop prevents interference with the gingiva when the toothbrush is inserted from the root direction. It becomes possible. As a further example, it is possible to reproduce a preform having an arbitrary shape such as an arrow shape as shown in FIGS. 3 and F and a keyhole shape as shown in G so as to be adapted to a cleaning target portion.
In the toothbrush formed in the inverted V shape shown in FIG. 2C, the narrow width of the brush increases as it approaches the handle, so the narrow tip is suitable for easy insertion of the intended cleaning portion. As the insertion is further advanced, the entire width of the brush is increased, and the appropriate elasticity of the loop brush shaft member whose both ends are fixed to the handle is pressed against the tooth surfaces directly below the brackets on both sides to enable efficient cleaning work. As shown in FIG. 2D, if this shape is formed into a substantially rhombic shape, the tip portion is suitable for insertion of the cleaning portion, but the width is reduced at the portion beyond the central widest portion. Since the brush bristles are pressed against the bracket even during the cleaning operation, the cleaning operation can be performed by inserting the brush from one direction.

Further, when a flexible resin material is used for the shaft portion, in addition to the variation in the fixing angle of the brush, the elastic coefficient of the shaft material can be fixed by twisting the brush shaft material when fixing both ends of the brush shaft. Since the internal stress generated according to the above is accumulated, the stress deformation value of the entire brush can be controlled according to the purpose.
In addition to the above-mentioned inverted V-shape, substantially rhombus shape, O-shape, inverted U-shape, Ω shape, or arbitrary indefinite shape, in addition to using a soft shaft material made of resin If it is, it is possible to preform a loop shaft toothbrush with a complicated shape depending on the cleaning work site such as keyhole type, arrow type, etc. by heat setting within the plastic deformation allowable range of the resin material. .. By changing the fixing angles of both ends of the preformed brush shaft three-dimensionally, it is possible to form a toothbrush with a more complicated brush shape such as a spiral shape with a three-dimensional twist or a filament shape.

  4 to 6 are loop toothbrushes in which the handle is deformed by hand pressure during cleaning. In the loop toothbrush of FIG. 4, both ends of the shaft 1 are always separated as shown in A, but when the handle 2-a2-b is pressed in the c, d, directions by finger pressure, the loop toothbrush of FIG. As described above, the fixed portions at both ends of the shaft come close to each other, and the loop shape changes. On the contrary, in the embodiment shown in FIG. 5, since the handle fixing portions 2-a and 2-b at both ends of the shaft portion 1 are always fixed at positions close to each other, a relatively narrow shape is formed. However, when the handle 2-a2-b is pressed by fingers in the c, d, and 4 positions around 4, the distance between the fixed portions of the shaft 1 is expanded and the loop shape is widened. In this way, the brush width or shape can be changed by changing the angle, distance, or both of the fixed parts with respect to the handles at the ends of various brush shafts. By making brush insertion easier and expanding the entire width of the loop-shaped brush after insertion, it is possible to clean the tooth flanks immediately below the brackets on both sides at once. When the loop-shaped toothbrush in which the position of the shaft 1 is changed is mounted in the direction perpendicular to the handle, the handle 2-a2-b should be a slide type as shown in the embodiment of FIG. This makes it possible to control the loop shape. Further, if the slide system is used, the loop shape can be fixed to any shape by fixing the handle at any position.

  In this way, by making the total width of the brush changeable at any time, if the toothbrush of the embodiment of FIGS. 4 to 6 is used in a portion having a relatively wide bracket distance, both ends of the shaft portion 1 are fixed as shown in FIG. By changing the distance between the formed handles 2-a and 2-b, the loop brush shape can be enlarged in the h direction after being inserted into the cleaning target portion without resistance in a state where the brush width is narrow from the position of FIG. 7f to g. It is possible to achieve sufficient plaque control by simply inserting and removing the brush without intentionally pressing the brush against the bracket and the tooth surface directly under the wire. Further, in a toothbrush having a mechanism for rotating the fixed positions of the shafts 2-a and 2-b of the shaft 1 as in the embodiment shown in FIG. 8, the toothbrush of the embodiment shown in FIGS. It is possible to change the loop shape without changing the outer shape of the handle.

Such a loop-shaped toothbrush is intended to improve the usability of a conventional brush with a stainless steel shaft, and even if the shaft material is soft and supple, it prevents the shaft of the brush from breaking and also has narrow teeth. Although it was devised so that it could be easily inserted into the hourglass-shaped space, in the case of a brush having a softer shaft portion, as shown in FIG. By fixing to a, 2-b, brushing gentle to the periodontal tissue such as the above-mentioned loop-shaped toothbrush becomes possible. As an example, as shown in FIG. 10, the other end of the brush fixing portion of the gently curved handle 2-a is inserted from the tooth flank position of the wire 8 of the both-side bracket 7 as shown in FIG. After pulling the handle 2-a up to g in the figure where the part reaches the cleaning target portion, the handle 2-a is folded back as shown in h in the figure and bundled with 2-b to be held and brushed by brushing. In addition to the elasticity of the material, the pulling and pulling force of the shaft due to manual pressure can be applied to the cleaning portion, so that the cleaning effect can be further improved. This Nunchuck-shaped toothbrush is suitable not only for cleaning the bracket surroundings during orthodontic treatment but also for cleaning the interdental part. When the handle is inserted and used, one of the handles that penetrates the interdental drum-shaped space is returned from the occlusal side to the buccal side, and the other handle and the brush width are bundled and held at the zushishita position, and the cheek is held. It is also possible to clean the interdental hourglass gap by sliding manually in the lingual direction. Further, as shown in FIG. 12, in the handle 2-a and the shaft 1 fixing portion which are passed through the narrow gap at this time, the handle 2-a is the same as or slightly shorter than the total brush length in the opposite direction to the embodiment, and the handle 2-a is the handle 2-b. It may be mounted so as to face the direction, and in this case, as shown in f to g of FIG. When the handle is pulled in the opposite direction like the rear h, the tip of the 2-a returns to the handle 2-b direction on the occlusal surface of the tooth, so that the handle 2-a, 2-b slides alternately while pulling the handle 2-a, 2-b toward the cheek. This makes it possible to brush around the contact point all at once.
As mentioned above, the shafts of these brushes have soft and supple shafts with brush hairs for cleaning, so they do not cause pain and damage to the gums during cleaning like metal wire interdental brushes. Also, there is no discomfort when the twisted portion of the shaft metal wire rubs against a tooth or a prosthesis. Further, since both ends are fixed by the respective handles, it is possible to manually control the cleaning pressure by the brush bristles.
In addition, the shape of the brush bristles of the present invention is not limited to the resin monofila as long as it has a cleaning ability, and the trimming shape of the brush and the fusion-integration method are not limited to the torsion brush. However, changes are made within the scope of the present invention. Similarly, when the brush shaft of the present invention is attached to the handle, it goes without saying that various changes can be made to the joining method corresponding to various shaft members.

  The loop toothbrush of the present invention has been described in the above embodiment by taking the tooth surface cleaning around the bracket during orthodontic treatment as an example, but the application of the loop-shaped torsion brush according to the present invention is simply limited to the toothbrush application. Not only electric toothbrushes, but also face wash brushes, clothes cleaning, floor cleaning brushes, jewelery polishing brushes, buffing brushes, fur brushes for slow-electricity devices of copying machines, cleaning brushes, and makeup brushes. It can be variously used as a rotating brush such as a brush. In particular, in the case of a weak electric appliance, a resin having excellent conductivity such as containing fine carbon particles is used as a resin forming the brush.

Claims (2)

A brush in which wires are arranged radially from an elastic shaft is cut to an arbitrary length, and both ends of the brush are fixed to the handle at an arbitrary distance and angle. A toothbrush capable of changing the shape of the brush by making the fixed position and the fixed angle variable. A toothbrush in which a brush in which wires are arranged radially from an elastic shaft is cut to an arbitrary length, and both ends of the shaft of the brush are fixed to separate handles.

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