KR101374468B1 - Dental interproximal cleaner - Google Patents

Abstract

Provide an interdental cleaning tool that can realize the effect of removing the interdental dirt. In the interdental cleaning tool 1 provided with the arch-shaped thread pull part 3 which tensioned the fiber bundle 4a, 4b, 4c for interdental cleaning, and the holding part which provided the said thread pull part 3 in one end, The pull portion 3 is provided with an insert 4 in which at least two bundles of fiber bundles 4a, 4b, 4c are arranged in parallel in parallel, and the distance D between the centers of neighboring fiber bundles is 0.6 to 1.0. Mm, the thickness of each fiber bundle 4a, 4b, 4c is 400-700 dtex, the total thickness of two or more bundles of fiber bundles 4a, 4b, 4c is 1200-2000 dtex, and is inserted in the interdental to which the prag adheres. By taking out, it is set as the interdental cleaning tool 1 in which the dirt film containing a plaque is formed between adjacent fiber bundles.

Description

Interdental Cleaner {DENTAL INTERPROXIMAL CLEANER}

The present invention relates to an interdental cleaning tool.

Background Art Conventionally, brushing with a toothbrush is the most common method for controlling plaque which is a cause of caries and periodontal disease. However, it is difficult to completely remove the plaque by brushing with a toothbrush, and it is known that 20 to 50% of the attached plaque remains on the tooth surface and the interdental after brushing. In addition, the interdental adjacent surface which is a site where the attachment of the plaque is unclear and the bristles of the toothbrush is hard to enter is one of the areas having the highest caries risk. Moreover, a piece of food pressed into the interdental adjacent surface or a plaque attached to the alveolar region of the interdental adjacent surface causes periodontal disease. Because of this, cleaning of the interdental is very important for the prevention of diseases in the oral cavity.

Interdental brush or dental floss can be mentioned as an interdental cleaning tool effective for cleaning the interdental proximal surfaces with a high risk of such oral diseases. The interdental brush can be used only when the interdental gap is wide, but the dental floss can be used even in the area where the interdental opening is small. For this reason, dental floss can be said to be a highly versatile interdental cleaning tool.

As a dental floss, the thing of the type which uses the fiber bundle which bundle | stacked short fiber around the finger, and uses it, and the disposable type of holder type in which the fiber bundle is insert-molded in the holder are known. The holder type has become widespread in recent years because of its simplicity of use. The holder type has recently been popularized for its hygienic and simple usability in that it does not wet the fingers with saliva, compared to the type in which the fiber bundle is wrapped around the finger. Further, in the holder type, a type in which a plurality of fiber bundles are arranged in order to improve the insertability and the feeling of plaque removal is also known.

As a dental floss of the type in which a plurality of such fiber bundles are arranged, it is provided with the holder part formed in the substantially U-shape which supports the insert in tension state, for example (refer patent document 2), but is essentially Having a flat handle, a spaced arm, a strand of a first floss, and a strand of a second floss (see Patent Document 3, for example). It is proposed that the legs are bent at an angle of 40 ° to 50 ° with respect to the longitudinal side surface of the handle (for example, refer to Patent Document 4).

As a dental floss of a holder type, examination is mainly made from the viewpoint of plaque removal effect and interdental insertion property about the property and arrangement | positioning of the fiber bundle fixed to a holder (for example, refer patent document 1-patent document 3).

Patent Literature 1 proposes a dental floss in which a bundle of fibers of one bundle is fixed to a holder. Patent Document 1 aims at providing an interdental cleaning tool that is easy to insert and easy to remove plaque.

In addition, Patent Literature 1 discloses a knowledge of a shape in which a floss fixing part on the grip side of a thread pulling part is located on or near the grip part axis, and the thickness of the fiber bundle suitable for floss. Insights are disclosed.

In addition, patent document 2 and patent document 3 propose the dental floss which fixed the several fiber bundle to the holder.

In patent document 2, it aims at provision of the interdental cleaning tool which can remove reliably food waste and can obtain a favorable cleaning effect. Moreover, patent document 2 discloses the knowledge regarding the width | variety and thickness of the insert which consists of a some filament.

Patent Document 3 aims to provide an interdental cleaning tool that is easy to insert and easy to remove plaque.

In addition, Patent Document 3 discloses a dental floss having two strands, and describes the distance, spacing, and denier of the strands. One strand of two strands described in patent document 3 backs up the other.

Patent Document 1: Japanese Patent Application Laid-Open No. 8-266340

Patent Document 2: Japanese Patent Application Laid-Open No. 2000-197647

Patent Document 3: Japanese Patent Application Laid-Open No. 2001-503664

Patent Document 4: Japanese Unexamined Patent Publication No. 7-13694

DISCLOSURE OF INVENTION

Problems to be solved by the invention

As described above, dental floss is a tool that is highly effective for interdental cleaning and is optimal for preventing oral diseases. However, dental floss is currently not as prevalent as toothbrushes. One reason for this is that the dirt removal effect of the interdental due to the floss is hard to be recognized as much as brushing with the toothbrush, and it is difficult for the user to continue using the motivation. That is, when cleaning with a toothbrush, when the plaque on the smooth surface is removed, there is a real soft feeling, but when cleaning with dental floss, it is difficult to obtain a feeling that the dirt is removed because the cleaning site is interdental.

Furthermore, the usability of the dental floss is mentioned. As a conventional dental floss, even if it is a holder-type dental floss which is easy compared with the type | mold which uses the fiber bundle wrapped around a finger, compared with a toothbrush, operability is not enough and it is calculated | required to improve usability. In particular, in a dental floss in which a plurality of fiber bundles are arranged, it is sometimes difficult to insert a fiber bundle into the interdental, and improvement is desired.

This invention is made | formed in view of the above, and an object of this invention is to provide the interdental cleaning tool which can realize the dirt removal effect of an interdental, and to provide an interdental cleaning tool excellent in operability and easy to use. .

Means for solving the problem

The present inventor has made intensive studies to obtain a high cleaning effect, and makes it easy for the user to recognize dirts such as plaque removed by interdental cleaning, and the effect of removing the interdental dirt is bodily. By visually recognizing, the interdental cleaning device of the present invention was conceived based on the technical idea that the intention to use the interdental cleaning device can be increased and the oral disease can be effectively prevented.

In addition, when interdental cleaning is performed using an interdental cleaning tool in which a plurality of fiber bundles are arranged, two or more bundles of fibers are arranged in order to smoothly and efficiently perform insertion and extraction operations of the fiber bundles into the interdental. It was found that it is preferable to insert the fiber bundle into the interdental, with the extending direction of the arrangement surface facing the interdental. And this inventor is easy to hold an arrangement surface in the state toward an interdental, and it is easy to make a delicate operation, and it is easy to insert and take out a fiber bundle into an interdental operation, and to change the direction of a thread pull part, without feeling a muscle strength burden. The interdental cleaning tool of this invention which can be performed easily was also considered.

The interdental cleaning device of the present invention is an interdental cleaning device including an arch-shaped thread pulling part that tensions a fiber bundle for interdental cleaning, and a holding part having the thread pulling part provided at one end thereof, wherein the thread pulling part has at least two bundles of fibers. Inserts arranged in parallel with each other are provided, and the distance between the centers of adjacent fiber bundles is 0.6 to 1.0 mm, the fineness of each fiber bundle is 400 to 700 dtex, and the total fineness of the fiber bundles of two or more speeds. Is 1200 to 20Odtex.

Further, in the interdental cleaning tool of the present invention, the insert is inserted into and taken out from the interdental to which the plag is attached, whereby a dirt film containing the plaque is formed between neighboring bundles of fibers.

Further, in the interdental cleaning tool of the present invention, each of the fiber bundles may be deformed by being inserted into the interdental teeth, partially in contact with other fiber bundles, and recovered by being taken out of the interdental and separated from each other.

Further, in the interdental cleaning tool of the present invention, the gripping portion may include a support surface which is supported by the user's finger in a direction perpendicular to the arrangement surface where the bundles of two or more bundles of fibers are arranged.

Further, in the interdental cleaning tool of the present invention, the gripping portion α / β, which is a value obtained by dividing the maximum width dimension α in the vertical direction with respect to the arrangement surface by the width dimension β in the parallel direction with respect to the arrangement surface, is 1 to 1. It can be set to 9.5.

Preferably, the α / β may be 2 to 3.

In addition, in the interdental cleaning tool of the present invention, the gripping portion may be in the range of 5 mm to 15 mm in the maximum width dimension α in the vertical direction with respect to the arrangement surface.

Moreover, in the interdental cleaning tool of this invention, it can be set as the length of the said holding | gripping part is 70 mm or more.

Moreover, in the interdental cleaning tool of this invention, the cross-sectional shape of the said holding part can be made into any of a rough rectangle, a rough hexagon, and a rough oval.

Effects of the Invention

In the present invention, it is possible to provide an interdental cleaning tool capable of bodily and visually recognizing the interdental dirt removal effect. Therefore, the intention to continue using the interdental cleaning device can be increased, and the oral disease can be effectively prevented.

Moreover, according to the interdental cleaning tool of this invention, it is easy to hold the extending direction of the arrangement surface in which 2 or more bundles of fiber bundles are arrange | positioned toward an interdental area, it is easy to carry out a delicate operation, and the insertion and take-out operation of a fiber bundle to an interdental. In addition, the operation of changing the direction of the thread pull can be easily performed without feeling the burden of muscle strength. Therefore, according to the interdental cleaning tool of the present invention, the interdental cleaning can be sufficiently performed with a small burden, and the disease in the oral cavity can be effectively prevented.

1A is a schematic diagram for explaining an example of an interdental cleaning tool of the present invention.

1B is a schematic diagram for explaining an example of an interdental cleaning tool of the present invention.

Fig. 2 is an enlarged side view showing a part of the interdental cleaning tool shown in Fig. 1.

FIG. 3 is an enlarged side view showing a part of the interdental cleaning tool shown in FIG. 1, illustrating a state of the interdental cleaning tool after cleaning; FIG.

FIG. 4 is a view for explaining the interdental cleaning using the interdental cleaning tool shown in FIG. 1. FIG.

FIG. 5 is a view for explaining an interdental cleaning using the interdental cleaning tool shown in FIG. 1. FIG.

DESCRIPTION OF THE REFERENCE NUMERALS (S)

1: interdental cleaning tool

2: gripping part

3: thread pull

4: insert

4a, 4b, 4c: fiber bundle

8: pick

6: between fiber bundles

9: dirt screen

41: array surface

BEST MODE FOR CARRYING OUT THE INVENTION

EMBODIMENT OF THE INVENTION Next, embodiment of this invention is described in detail using drawing. In addition, this invention is not limited to embodiment described below.

1: is a schematic diagram for demonstrating an example of the interdental cleaning tool of this invention, FIG. 1A is a side view, and FIG. 1B is a top view when the fiber bundle for interdental cleaning is looked downward. 2 is an enlarged side view which shows a part of interdental cleaning tool shown in FIG. FIG. 3 is an enlarged side view showing a part of the interdental cleaning tool shown in FIG. 1 and is a view for explaining the state of the interdental cleaning tool after cleaning. 4 and 5 are diagrams for explaining a situation in which interdental cleaning is performed using the interdental cleaning tool shown in FIG. 1.

The interdental cleaning tool 1 shown in FIG. 1 is provided with an arc-shaped thread pulling portion 3, a thread pulling portion 3 at one end thereof, and a pick 8 having a toothpick function at the other end thereof. And an insert 4 made up of a gripping portion 2 whose cross-sectional shape has become a substantially rectangular shape, and a fiber bundle for interdental cleaning tensioned by the thread pulling portion 3. The holding part 2 is provided with the support surface 2a on which a user's finger is supported. The thread pulling portion 3 is roughly U-shaped, and is gently curved toward the tip from the grip portion 2 side. In the interdental cleaning tool 1 shown in FIG. 1, the extending | stretching direction of the holding part 2 becomes parallel to the arrangement direction of the fiber bundle of the insert 4. In addition, in the thread pull portion 3 of the interdental cleaning tool 1 shown in FIG. (4) is provided.

As the material of the fiber bundles 4a, 4b and 4c, polyester resins such as polyethylene terephthalate, polyamide resins such as nylon 6 and nylon 66, polyolefin resins such as polyethylene and polypropylene and the like are preferable. In addition, the thickness of the short fibers of the fiber bundles 4a, 4b and 4c is preferably 2 to 20 dtex. In order to improve the workability of the fiber bundles 4a, 4b and 4c at the time of manufacture or to reduce the unwinding of the fiber bundles 4a, 4b and 4c, it is preferable to twist them. It is preferable to make a circuit of 50 to 15O.

The material of the gripping portion 2 may be a polyester resin such as polyethylene terephthalate, or a polyolefin such as polyethylene or polypropylene, but it is preferable to use polystyrene resin (PS) as the shrinkage rate during molding is low. In addition, in order to be able to bend and use the holding part 2, or to make the toothpick function of the pick 8 good, it is preferable to use impact resistant polystyrene (HIPS) having high impact strength as the material of the holding part 2. desirable.

The interdental cleaning tool 1 shown in FIG. 1 is inserted into and taken out from the interdental, and as shown in FIG. 3, the dirt film 9 including a plaque is formed between the adjacent fiber bundles 6. will be. In the interdental cleaning tool 1 of the present embodiment, each of the fiber bundles 4a, 4b, and 4c is inserted into the interdental to deform from a state in which they are substantially parallel to each other, and are separated from each other. Is brought into contact with each other, is recovered by being taken out of the interdental space, and is separated from each other again to be in a substantially parallel arrangement. By setting it as such interdental cleaning tool 1, the mixture of the plaque and saliva removed at the time of cleaning becomes easy to spread in a film form between the fiber bundles 6, and contains the plaque between the adjacent fiber bundles 6. The dirt film 9 is easily formed. Moreover, by setting it as such interdental cleaning tool 1, the high insertion property and big plaque removal feeling with respect to an interdental are obtained.

In addition, in the interdental cleaning apparatus 1 shown in FIG. 1, as shown in FIG. 2, the distance between the centers 6 between adjacent fiber bundles of 3rd bundle bundles 4a, 4b, and 4c (fiber bundles) Spacing) (D) is 0.6 to 1.0 mm, preferably 0.7 to 0,9 mm, most preferably 0.8 mm, and the fineness of each fiber bundle 4a, 4b, 4c is 400 to 700 dtex, preferably 500 to 70 dtex, and the total fineness (total fiber bundle fineness) of the three bundles of fiber bundles 4a, 4b, and 4c are 1200 to 2000 dtex.

In the interdental cleaning tool 1 shown in FIG. 1, since the distance D between the centers of the neighboring fiber bundles 6 is in the above range, the removed plaque is shown in FIG. 3. The mixture with saliva is easy to spread in the form of a film between the fiber bundles 6, and between the adjacent fiber bundles 6, the dirt film 9 including the plaque is easily formed, and the removed plaque is easily recognized. can do.

When the fiber bundle spacing D shown in FIG. 2 exceeds 1.0 mm, the fiber bundle spacing D is too wide, making it difficult to form the dirt film 9 including the plaque, It may become only to adhere to the circumference | surroundings of the fiber bundle 4a, 4b, 4c, and it becomes difficult to visually recognize the presence or absence of the removed plaque. In addition, when the fiber bundle space | interval D exceeds 1.0 mm, the fiber bundle 4a, 4b, 4c will be removed by the insertion / take-out operation of the fiber bundle 4a, 4b, 4c in the interdental at the time of cleaning. It becomes difficult to be in contact with another fiber bundle, and there exists a possibility that the adhesiveness of fiber bundle 4a, 4b, 4c and tooth surface may become inadequate.

On the other hand, when the fiber bundle spacing D is less than 0.6 mm, for example, even if the fiber bundle spacing D is buried in the prag, the fiber bundle spacing D is too narrow so that the fiber bundle spacing D is narrow. It becomes difficult to recognize whether it is buried or not. If the fiber bundle spacing D is less than 0.6 mm, the fiber bundles 4a, 4b, and 4c are loosened by the insertion and extraction operation of the fiber bundles 4a, 4b, and 4c into the interdental at the time of cleaning. When the fiber bundles 4a, 4b, and 4c are difficult to be released when the fiber bundles are in contact with the other fiber bundles so that the fiber bundles overlap, the fiber bundles 4a, 4b, and 4c are arranged in parallel in parallel, respectively. It is difficult to return to the separated state. For this reason, when the fiber bundle spacing D is less than 0.6 mm, the fiber bundles often try to pass the interdental in a state where they are overlapped and arranged in parallel to the interdental, and the interdental as in the case of using a thick fiber bundle Insertion property (ejectability) to an is lowered. In particular, when a plurality of thin fiber bundles are arranged in a band without being spaced apart, the degree of freedom of movement of each fiber bundle is reduced at the time of cleaning, so that the fiber bundles in contact with other fiber bundles are very difficult to unwind. Since it becomes difficult to return to the state arrange | positioned in substantially parallel, the insertability (take-out property) to the interdental of fiber bundle 4a, 4b, 4c may worsen remarkably. Moreover, when manufacturing the interdental cleaning tool 1, insert molding is performed by inserting each fiber bundle 4a, 4b, 4c into the corresponding groove | channel of each fiber bundle 4a, 4b, 4c formed in the metal mold | die. When the fiber bundle spacing D is narrow, it is difficult to insert the fiber bundles 4a, 4b, and 4c into the grooves of the mold, resulting in poor workability during molding. As a result, the likelihood of molding failure is increased due to the protrusion of the fiber bundles 4a, 4b, and 4c from the grooves.

In general, as the floss, a bundle of fibers having a fineness of around 10dOtex is often used. By narrowing the fiber bundle, the insertability into the interdental can be improved. On the other hand, when the fiber bundle is thinned, the adhesiveness between the fiber bundle and the tooth surface is lowered, so that the cleaning effect is lowered and the feeling of removing plaque is lowered.

On the other hand, in the interdental cleaning tool 1 of this embodiment, since the 3rd bundle bundles 4a, 4b, 4c are arrange | positioned in substantially parallel, the thickness of each fiber bundle 4a, 4b, 4c is more than the general dental floss. Even if it is thin and improves the interdental insertion property, the adhesiveness of the fiber bundle 4a, 4b, 4c and the tooth surface can fully be ensured. Therefore, the interdental cleaning tool 1 of this embodiment has a high feeling of plaque removal which can obtain a high cleaning effect, maintaining the good insertion property, and can easily recognize the interdental dirt removal effect bodily. do.

However, in the interdental cleaning tool 1 of this embodiment, when the fineness of each fiber bundle 4a, 4b, 4c exceeds 700 dtex, or when the total fiber bundle thickness exceeds 2000 dtex, the interdental insertability is It will fall remarkably. On the other hand, when the fineness of each fiber bundle 4a, 4b, 4c is less than 400 dtex, or if the total fiber bundle fineness is less than 1200 dtex, the feeling of plaque removal will fall.

When passing the insert 4 through the interdental, each fiber bundle 4a, 4b, 4c is inserted into the interdental, regardless of the relationship between the extending direction of the arrangement surface 41 and the depth direction between the interdental. As shown in Fig. 4, the fiber bundles 4a, 4b, 4c are arranged in series with respect to the interdental, while deforming in response to the force on each of the fiber bundles 4a, 4b, 4c imparted by the operation. Alternatively, as shown in FIG. 5, the fiber bundles pass through the interdental state in a state of overlapping.

Here, the state in which the fiber bundles 4a, 4b, and 4c are arranged in series with respect to the interdental is as shown in FIG. 4, the third bundle of fiber bundles 4a and 4b occupied in the vertical direction with respect to the array surface 41. 4c means that the width of the fiber bundle 4a, 4b, 4c constituting the insert 4 is the size of the fiber bundle having the largest fineness. In addition, the state where the fiber bundles overlapped is a state in which at least a part of the fiber bundles 4a, 4b, and 4c overlap in parallel with the interdental, as shown in FIG. 5, and is perpendicular to the arrangement surface 41. This means that the widths of the three bundles of fiber bundles 4a, 4b and 4c occupied are larger than the thicknesses of the respective fiber bundles 4a, 4b and 4c. For example, in FIG. 5, in the vicinity of the longitudinal center of the fiber bundles 4a, 4b and 4c, all the fiber bundles 4a, 4b and 4c are integrated and overlap in parallel with the interdental.

For example, in the interdental cleaning tool 1 of the present embodiment, when the fiber bundles 4a, 4b, and 4c pass through a narrow interdental which cannot pass in a state arranged in parallel with the interdental, it is shown in Fig. 4. As shown, the fiber bundles 4a, 4b, 4c are deformed in series with the interdental and pass through the interdental. Therefore, in the interdental cleaning tool 1 of this embodiment, the insertability to the interdental part which is equivalent to the case where one thickest fiber bundle among the fiber bundles 4a, 4b, and 4c which comprises the insert 4 is used (take-out) Sex) In addition, in this case, since three fiber bundles 4a, 4b, 4c arranged in series with respect to the interdental are rubbed in the tooth surface in one insertion and extraction operation, a high cleaning effect can be obtained.

In addition, when passing the interdental which is wider than the thickness dimension of each fiber bundle 4a, 4b, 4c, each fiber bundle 4a, 4b, 4c will freely deform | transform each other, and will pass along an interdental surface. Also in this case, a plurality of fiber bundles rub the tooth surface in one insertion and extraction operation. Moreover, even if the thickness of each fiber bundle 4a, 4b, 4c is thin, the 3rd bundle of fiber 4a which occupies perpendicularly with respect to the array surface 41 by deformation | transformation of each fiber bundle 4a, 4b, 4c. Since 4b and 4c become wider, adhesiveness between the fiber bundles 4a, 4b and 4c and the tooth surface can be sufficiently secured. Therefore, a high cleaning effect can be obtained.

In addition, in the interdental cleaning tool 1 of this embodiment, as shown, for example in FIG. 5, even if it is in the state which contacted the other fiber bundle and some parts when passing through interdental, after passing interdental, As shown in FIG. 2, it recovers quickly and it becomes a state arrange | positioned substantially parallel and spaced apart, respectively.

In addition, in the interdental cleaning apparatus 1 shown in FIG. 1, the direction perpendicular | vertical to the arrangement surface 41 by which the fiber bundle 4a, 4b, 4c is arranged (in the arch height direction of the thread pull part 3). The maximum width dimension α of the gripping portion 2 having a rectangular cross section in the vertical direction) is in the range of 5 mm to 15 mm, and the maximum width dimension α in the vertical direction is arranged on the array surface 41. Since α / β, which is a value obtained by dividing by the width dimension β in the parallel direction, is 1 to 9.5, as shown in FIG. 4, a thumb or second approximately perpendicular to the insertion direction of the insert 4 is shown. The insert 4 can be easily inserted into and taken out from the interdental, with the fingers held side by side and the extending direction of the arrangement surface 41 facing the interdental. By inserting the insert 4 in the interdental state with the extending direction of the arrangement surface 41 facing the interdental, insertion and extraction operations of the insert 4 into the interdental can be performed smoothly and efficiently.

Like the interdental cleaning tool 1 shown in FIG. 1, the interdental cleaning tool 1 having the insert 4 in which a plurality of fiber bundles are arranged is used to efficiently clean the interdental space, as shown in FIG. 1. It is preferable to insert the insert 4 in an interdental state, with the extending direction of) facing an interdental. In addition, the insertion and take-out operation of the insert 4 to the interdental is a thumb on the supporting surface 2a provided in the direction perpendicular to the arrangement surface 41 with the extending direction of the arrangement surface 41 facing the interdental. It is preferable to hold the interdental cleaning device 1 with a finger or a second finger.

However, if the maximum width dimension α in the vertical direction of the grip portion 2 shown in FIG. 1 is less than 5 mm, the thumb or the second finger is placed on the surface of the grip portion 2 in the vertical direction with respect to the arrangement surface 41. The pressure applied to the thumb or second finger, which is roughly perpendicular to the insertion direction of the insert 4, is increased when the pressure is applied to the insert 4, so that the thumb or the second finger may feel pain. In addition, when the largest width dimension (alpha) of the grip part 2 in the vertical direction exceeds 15 mm, when a thumb or a second finger is held by the surface of the grip part 2 in the vertical direction with respect to the arrangement surface 41, Since the contact area between the gripping portion 2 and the finger is too large, delicate manipulation in the oral cavity is difficult to perform, resulting in inferior operability.

In addition, when (alpha) / (beta) which is the value which divided the maximum width dimension (alpha) of the vertical direction by the width dimension (beta) parallel to the array surface 41 is less than 1, the cross-sectional shape of the holding part 2 is an insert ( Since it becomes a longitudinally long shape according to the insertion direction of 4), a thumb is applied to the surface of the holding part 2 perpendicular | vertical with respect to the arrangement surface 41, with the extending direction of the arrangement surface 41 toward an interdental direction. Or when grasping with the second finger, the grip is unstable and the operability is worse. When α / β, which is the value obtained by dividing the maximum width dimension α in the vertical direction by the width dimension β in the parallel direction with respect to the array surface 41, exceeds 9.5, the width dimension β in the parallel direction of the gripping portion 2 May become too small, the rigidity may be insufficient, and the delicate operation in the oral cavity may be difficult to perform, resulting in inferior operability.

Here, for example, α / β, which is a value obtained by dividing the maximum width dimension α in the vertical direction by the width dimension β in the parallel direction with respect to the array surface 41, is less than 1, and / or with respect to the array surface 41. If the maximum width dimension (α) in the vertical direction is less than 5 mm, the array surface, rather than holding the thumb or the second finger on the surface of the grip portion 2 in the vertical direction with respect to the array surface 41 when cleaning the interdental The side of the gripping portion 2, which is approximately parallel to 41, is fitted with the thumb and forefinger, so that the gripping side is easy to grip. However, in the case of holding the side surface of the gripping portion 2, if the intercalation force of the finger is insufficient, the interdental cleaning tool is pulled out from between the fingers by applying a force in the insertion direction of the interdental cleaning tool (the depth direction between the interdental teeth). You need to put your thumb on your second finger and hold it firmly. Therefore, the burden on the thumb proximal muscle, the main root muscle of the pinching motion by the thumb and the second finger, and on the dorsal interosseous muscle of the second finger are very high. It becomes big. As described above, when the muscle strength burden on the user is large, it is difficult to sufficiently clean the interdental teeth.

On the other hand, according to the interdental cleaning tool 1 of this embodiment, it arrange | positions in the state which extended the direction of the arrangement surface 41 toward an interdental, without pinching the holding | gripping part 2 strongly with a thumb and a second finger. The thumb or the second finger is held on the surface of the grip portion 2 in the vertical direction with respect to the face 41, and insertion and extraction operations of the insert 4 into the interdental can be performed. Therefore, interdental cleaning can be easily performed without feeling the muscle strength burden of the thumb adductor and the forearm bone interosseous muscle of the finger, and the interdental cleaning can be sufficiently performed until sufficient feeling of plaque removal is obtained.

In addition, the length L of the holding part 2 shown in FIG. 1 is 70 mm or more. The holding part 2 here means that it is all parts from the root of the thread pull part 3 to the back side (the pick 8 side in FIG. 1). By making the length L of the grip part 2 70 mm or more, as shown in FIG. 4, a little finger reaches the edge part of the grip part 2, and the interdental cleaning tool 1 is shown. It can hold grip firmly and stably, and it becomes easy to use interdental cleaning easily. Therefore, the oral cavity cleaning can be performed sufficiently using the interdental cleaning tool 1 of this embodiment.

On the other hand, if the length L of the holding part 2 is less than 70 mm, for example, when holding the source of the thread pull part 3 when inserting the insert 4, the holding part ( The pick 8 constituting the end of 2) is less likely to reach the little finger, making it difficult to perform stable cleaning.

In addition, in the interdental cleaning tool 1 of this embodiment, since the extending | stretching direction of the holding part 2 is parallel with the arrangement direction of the fiber bundle 4a, 4b, 4c, the interdentation direction of the arrangement surface 41 is interdental. In the state facing toward the surface, it is easy to apply a force when the thumb or the second finger is held by the surface of the holding part 2 in the direction perpendicular to the arrangement surface 41, and the interdental cleaning device 1 is inserted into the interdental. And take-out operation can be performed more easily.

Further, in the interdental cleaning tool 1 of the present embodiment, the distance D between the centers between adjacent fiber bundles of the third bundle of fiber bundles 4a, 4b, and 4c is 0.6 to 1.0 mm, and each fiber bundle is By the synergistic effect that the fineness of (4a, 4b, 4c) is 400-700 dtex, and the total fineness of the third bundle of fiber bundles 4a, 4b, 4c is 1200-2000 dtex, a better insertability and a high cleaning effect can be obtained. have. In addition, according to the interdental cleaning tool 1 of this embodiment, the mixture of the removed plaque and saliva is easy to spread in a film form between the fiber bundles 6, and the plaque is contained between the adjacent fiber bundles 6. The dirt film 9 can be easily formed, the removed plaque can be easily recognized, and the intention to continue using the interdental cleaning tool can be enhanced.

Usually, the fiber bundle for interdental cleaning is colorless to white, and the prag is also close to white. For this reason, it is hard to recognize even if a prag adheres on a fiber bundle. In particular, in a dental floss in which fiber bundles are arranged in one bundle as in a conventional interdental cleaning tool, or in a dental floss in which fiber bundles are arranged without a gap, it is difficult to recognize even if the plaque adheres to the fiber bundle. On the other hand, in the interdental cleaning tool of the present invention, at least two bundles of fibers are arranged in parallel in parallel, so that the plaque is interposed between neighboring fiber bundles by inserting and extracting the interdental fibers at the time of cleaning, thereby including the plaque. A water film is formed and the removed plaque is in a very easy state. This is because the gap between the fiber bundles arranged in parallel fills the removed plaque so that the plaque becomes more visible.

In addition, this invention is not limited to embodiment mentioned above. For example, the shape of an arc-shaped thread pulling part may not be the shape shown in FIG. 1, and may be U-shaped or Y-shaped. In addition, as shown in FIG. 1, a pick 8 may be provided on the side opposite to the thread pull portion 3 of the grip portion 2, but is shown in FIG. 1 instead of the pick 8, for example. The thread pulling portion 3 may be provided, or a flat rod shape may be substituted for the pick 8.

In addition, although the cross-sectional shape of the holding part 2 of the interdental cleaning tool 1 of above-mentioned embodiment can be made into a substantially rectangular shape, either a flat outline polygon, such as a flat outline octagon or a flat outline hexagon, or an oval, etc. It may be a shape. In addition, in order to give an anti-slip effect, the surface of the holding part 2 may have ribs and fine wrinkles.

In addition, in the interdental cleaning tool 1 of embodiment mentioned above, although the fineness of the fiber bundles 4a, 4b, and 4c of the 3rd bundle was made all the same, only one part may differ and all may differ.

In addition, in the interdental cleaning tool 1 of embodiment mentioned above, although the distance D between the centers between the adjacent fiber bundles 6 was all the same, you may differ. In the present invention, when the number of two or more bundles of fibers exceeds three bundles, the distances D between the centers between neighboring bundles of fibers may be all the same, only some of them may be different, or all of them may be different.

In addition, in the interdental cleaning tool 1 of above-mentioned embodiment, although the number of fiber bundles was made into 3 speed | rates, the number of fiber bundles should just be 2 or more speeds, and it is not specifically limited.

Although an Example is shown to the following and this invention is demonstrated in more detail, this invention is not limited to these Examples.

`` Experimental Example 1 to Experimental Example 7 ''

The fiber bundles 4a, 4b, and 4c of the fineness 56 Odtex are arranged in parallel with the fiber tuft interval D (distance between the centers between neighboring fiber bundles) shown in Table 1 on the thread pull section 3. The interdental cleaning tool 1 shown to FIG. 1 and FIG. 2 which were shown was manufactured.

[Table 1]

Experimental Example 8

The interdental cleaning tool similar to Experimental Example 1 was produced except that the fineness of the fiber bundle was 100 Odtex, and the number of fiber bundles was 1 speed.

[Experimental Example 9]

The interdental cleaning tool similar to Experimental Example 1 was produced except that the fineness of the fiber bundles was 17 Odtex, the number of fiber bundles was 6, and the adjacent fiber bundles were arranged in a band shape.

Thus, the "formability" of the interdental cleaning tool of Experimental example 1-Example 9 obtained in this way was evaluated based on the evaluation criteria shown below. In addition, the panelist of 3O performed interdental cleaning using the interdental cleaning tool of Experimental example 1-Example 9, and evaluated "easiness of the removed plaque" based on the evaluation criteria shown below. Moreover, the evaluation of "easy to mold" and "total evaluation" of evaluation of "easiness of the removed plaque" were evaluated based on the evaluation criteria shown below. The results are shown in Table 1.

<Evaluation Criteria>

3-step absolute evaluation

`` Forming (easy to mold) ''

○: less than 1% defective rate △: defective rate 1 or more less than 5% ×: defective rate 5% or more

`` Easy to see removed plaque ''

○: Very easy to see △: Slightly easy to see ×: Hard to see

`` Comprehensive evaluation ''

○: very good △: slightly better ×: not good

As shown in Table 1, in Experimental Examples 2 to 6, in which the fiber bundle spacing was in the range of the present invention, there was no x in all evaluations, and a good result was obtained. Further, in Experimental Examples 3 to 5, wherein the fiber bundle spacing was 0.7 to 0.9 mm, the comprehensive evaluation was ○ or ○ to Δ, and in Experimental Example 4 where the fiber bundle spacing was 0.8 mm, all evaluations were ○. It turned out that it was more preferable.

In Experimental Example 1, since the fiber bundle spacing is 0.5 mm and less than 0.6 to 1.0 mm, which is the scope of the present invention, it is difficult to recognize whether or not the fiber bundle spacing is buried in the plaque, and "easy to see the removed plaque". The evaluation of became x to (triangle | delta). Moreover, in Experimental example 1, since the fiber bundle spacing was narrow, workability | operativity at the time of shaping | molding was bad, and evaluation of "formability" became x-(triangle | delta). In Experimental Example 1, when the fiber bundles were loose at the time of cleaning, the fiber bundles easily overlap in the width direction of the interdental, and it is difficult to be inserted into the interdental, so that the "global evaluation" also became x to Δ.

In Experimental Example 7 in which the fiber bundle spacing exceeded the scope of the present invention, a dirt film was hardly formed, and evaluation of "easiness of removal of removed plaque" was x to Δ. In addition, in Experimental Example 7, "general evaluation" also became x-(triangle | delta).

In Experimental Example 8 in which the fiber bundle number was set at 1 speed, "easiness of removal of the removed plaque" and "overall evaluation" were x to Δ.

In Experimental Example 9 in which the fiber bundles were arranged in a band so that neighboring fiber bundles were in contact with each other, the "easy to see removed plaque" and "total evaluation" were x to Δ.

"Experimental Example 10-Experimental Example 16"

The fiber bundles 4a, 4b, and 4c of the fineness shown in Table 2 on the thread pull section 3 are approximately parallel to the fiber bundle spacing D (distance between the centers of neighboring fiber bundles) at 0.8 mm. The interdental cleaning tool 1 shown to FIG. 1 and FIG. 2 which were arranged was manufactured.

[Table 2]

Experimental Example 17

Interdental cleaning tools similar to those of Experimental Examples 10 to 16 were prepared except that the number of fibers was doubled.

[Experimental Example 18]

The interdental cleaning tool similar to Experimental Example 10-16 was produced except having made the number of fiber bundles into 4 speed | rates.

[Experimental Example 19]

The interdental cleaning tool similar to Experimental Example 10-16 was produced except having made the number of fiber bundles into 1 speed | rate.

[Experimental Example 20]

Interdental cleaning tools similar to Experimental Example 10 to Experimental Example 16 were manufactured except that the number of fiber bundles was set at 6 speeds and the adjacent fiber bundles were arranged in a band shape.

[Experimental Example 21]

Interdental cleaning tools similar to those of Experimental Examples 10 to 16 were prepared except that the number of fibers was doubled.

Using the interdental cleaning tool of Experimental Examples 10-21 obtained in this way, 30 participants performed interdental cleaning and evaluated "interdental insertion property" and "plaque removal feeling" based on the evaluation criteria shown below. In addition, the "general evaluation" of the evaluation of "interdental insertion property" and the evaluation of "plaque removal feeling" were evaluated based on the evaluation criteria shown below. The results are shown in Table 2.

<Evaluation Criteria>

3-step absolute evaluation

Interdental Insertion (Convenience of Insertion and Extraction to Interdental Section)

○: very easy to insert △: easy to insert slightly ×: difficult to insert

`` Prag removal feeling ''

○: feel very △: feel a little ×: does not feel much

`` Comprehensive evaluation ''

○: very good △: slightly better ×: not good

As shown in Table 2, in Experimental Examples 11 to 15 and Experimental Examples 17 to 18 in which the fineness of the fiber bundle and the total fineness of the fiber bundle (total fiber bundle fineness) are the scope of the present invention, all evaluations were performed. There was no x and a favorable result was obtained. In addition, in Experimental Examples 12-13 in which the fineness of a fiber bundle is 500-560 dtex and the total fineness (total fiber bundle fineness) of a fiber bundle is 1500-1680 dtex, it is confirmed that "the comprehensive evaluation" becomes (circle), and it is more preferable. there was. In Experimental Example 15, in which the total fineness of the fiber bundles (total fiber bundle fineness) was 1950 dtex, the "general evaluation" became Δ, and the total fineness of the fiber bundles (total fiber bundle fineness) confirmed that 1200-18800 dtex was more preferable. Could.

In Experimental Example 10, in which the thickness of the fiber bundles and the total fineness of the fiber bundles (total fiber bundle fineness) were less than the range of the present invention, the "plaque removal feeling" became x.

In Experimental Example 16 in which the thickness of the fiber bundles and the total fineness of the fiber bundles (total fiber bundle fineness) exceeded the scope of the present invention, the "interdental insertion property" became x to Δ.

In Experimental Example 19, in which the thickness of the fiber bundle exceeds the scope of the present invention, the total fineness of the fiber bundle (total fiber bundle fineness) is less than the range of the present invention, and the number of fiber bundles is one, the "interdental insertability" "prag Removal feeling "" general evaluation "became x-(triangle | delta).

In Experimental Example 2O, in which the fiber bundles were arranged in a band so that neighboring fiber bundles were in contact with each other, since the fiber bundles were not arranged at intervals, the movement of the fiber bundles was limited during interdental cleaning. Although the total fineness of a bundle (total fiber bundle fineness) was also less than the range of this invention, "interdental insertability" and "general evaluation" became x.

In Experimental Example 21 in which the total fineness of the fiber bundles (total fiber bundle fineness) was less than the range of the present invention, the "plaque removal feeling" and "total evaluation" were x to Δ.

Next, another example of the present invention is shown.

Experimental Example 22 to Experimental Example 28

In the thread pull part, the interdental cleaning tool arranged in parallel with the fineness shown in Table 3 and the fiber bundle of the fiber bundle number at the fiber bundle interval (distance between the centers between neighboring fiber bundles) shown in Table 3 is produced. It was.

[Table 3]

In addition, the fiber bundle fineness and fiber bundle spacing shown in Table 3 were shown in order with the inner side of a thread pulling part up, and the outer side down.

Using the interdental cleaning tool of Experimental Examples 22 to 28 thus obtained, "interdental insertability", "plaque removal feeling" and "total evaluation" were evaluated in the same manner as in Experimental Example 10. The results are shown in Table 3.

As shown in Table 3, in Experimental Examples 22 to 28 in which the fineness of the fiber bundles and the total fineness of the fiber bundles (total fiber bundle fineness) were in the range of the present invention, all evaluations did not have ×, resulting in good results. .

"Experimental example 29-43"

3 bundles of fine fibers of 560 dtex of fineness are arranged in parallel at approximately 0.8 mm of fiber bundle spacing D (distance between the centers of neighboring fiber bundles), and the "vertical" shown in Tables 4 and 5 Direction maximum width (alpha) (maximum width dimension (alpha) perpendicular to array surface) "" parallel direction width (beta) (width dimension (beta) parallel to array surface) "" maximum vertical width (a) The interdental cleaning tool provided with the holding part of / parallel direction width (beta) "" cross-sectional shape. "

[Table 4]

[Table 5]

Thirty participants performed interdental cleaning using the interdental cleaning tool of Experimental Examples 29-43 obtained in this way, and evaluated "pain of a finger", "manipulation", "comfort" based on the following evaluation criteria. . The results are shown in Table 4.

<Evaluation Criteria>

3-step absolute evaluation

`` Pain of the finger ''

○: does not feel at all △: almost does not feel ×: feel

`` Operation ''

○: very easy to operate △: slightly easier to operate ×: difficult to operate

`` Easy to hold ''

○: very easy to grip △: slightly easier to grip ×: difficult to grip

As shown in Table 4, Experimental Examples 31 to 34, Experimental Examples 36 to 39, wherein the vertical maximum width α and the vertical maximum width α / parallel width β are within the scope of the present invention. In Experimental Examples 41-42, there was no x in all the evaluations, and favorable results were obtained.

Moreover, in Experimental Example 33, Experimental Example 41, and Experimental Example 42 whose vertical maximum width (alpha) is 9.5 mm and vertical maximum width (alpha) / parallel direction width (beta) are 2.7, comprehensive evaluation irrespective of a cross-sectional shape, It became (circle) and was able to confirm more preferable thing.

In addition, in Experimental Example 29 and Experimental Example 30, since the vertical maximum width (alpha) is less than 5-15 mm which is the range of this invention, pain is felt at the time of gripping, and evaluation of "the pain of a finger" is x or x- (triangle | delta). It became. In Experimental Example 29 and Experimental Example 30, evaluations of "manipulation" and "holding comfort" were also X or X to Δ.

Further, in Experimental Example 35, since the vertical maximum width α exceeded 5 to 15 mm, which is the range of the present invention, the finger movement is limited and delicate manipulation is difficult, and the thread pulling portion is changed when the thread pulling direction is changed. Since it was hard to change direction, evaluation of "manipulation" and "easy to hold" became x-(triangle | delta).

Moreover, in Experimental Example 40 and Experimental Example 43, since the vertical maximum width (alpha) / parallel width (beta) is less than 1-9.5 which is the range of this invention, it supports the side surface of a grip part, Since the burden on the dorsal bone of the foremost side of the finger is large and difficult to grasp, the evaluations of "manipulation" and "comfort" were x or x to Δ.

Next, another example of the present invention is shown.

`` Experimental Example 44 to Experimental Example 52 ''

The fiber bundles of the third bundle of thickness 560 dtex are arranged in parallel in the fiber tuft distance D (distance between centers of neighboring fiber bundles) of 0.8 mm in thickness, and are shown in Table 6 in the "vertical direction". Maximum width α (maximum width dimension (α) perpendicular to array surface) "" parallel width (β) (width dimension (β) parallel to array surface) "" vertical maximum width (α) / parallel The interdental cleaning tool provided with the holding part of the direction width (beta) "" cross-sectional shape "was manufactured.

TABLE 6

Using the interdental cleaning tool of Experimental Examples 44-52 obtained in this way, "Pain of the finger", "manipulation" and "comfort" were evaluated in the same manner as in Experimental Example 29. The results are shown in Table 6.

As shown in Table 6, in Experimental Examples 44 to 52 in which the vertical maximum width α and the vertical maximum width α / parallel width β are within the scope of the present invention, all evaluations did not have ×, Good results were obtained.

In the present invention, it is possible to provide an interdental cleaning tool capable of bodily and visually recognizing the interdental dirt removal effect. Therefore, the intention to continue using the interdental cleaning device can be increased, and the oral disease can be effectively prevented.

Moreover, according to the interdental cleaning tool of this invention, it is easy to hold the extending direction of the arrangement surface in which 2 or more bundles of fiber bundles are arrange | positioned toward an interdental area, it is easy to carry out a delicate operation, and the insertion and take-out operation of a fiber bundle to an interdental. In addition, the operation of changing the direction of the thread pull can be easily performed without feeling the burden of muscle strength. Therefore, according to the interdental cleaning tool of the present invention, the interdental cleaning can be sufficiently performed with a small burden, and the disease in the oral cavity can be effectively prevented.

Claims (9)

In the interdental cleaning tool provided with the arch-shaped thread pull part which tensioned the fiber bundle for interdental cleaning, and the holding part which provided the said thread pull part at one end, The thread pulling portion is provided with an insert in which at least two bundles of four bundles or less of fiber bundles are arranged substantially in parallel, The distance between the centers of neighboring fiber bundles is 0.6-1.0 mm, The fineness of each fiber bundle is between 400 and 700 dtex, The total fineness of the fiber bundles of 2 or more and 4 or less is 120O to 20OODtex, Each of the fiber bundles is deformed by being inserted into the interdental to contact with other fiber bundles, and is partially restored and separated from each other by being taken out of the interdental, The gripping portion has a support surface on which the user's finger is supported in a direction perpendicular to the arrangement surface on which the fiber bundles of the second to fourth speeds are arranged, As the insert is inserted into and taken out from the interdental to which the prag is attached, a dirt film including the prag is formed between neighboring bundles of fibers, The gripping portion has α / β of 1 to 9.5, which is a value obtained by dividing the maximum width dimension α in the vertical direction with respect to the arrangement surface by the width dimension β in the parallel direction with respect to the arrangement surface. The gripping portion has a maximum width dimension α in a direction perpendicular to the arrangement surface of 5 mm to 15 mm, The insert consists of the bundle of fibers of the third bundle, The distance between the center of the innermost fiber bundle and the fiber bundle adjacent thereto is An interdental cleaning tool, characterized in that it is equal to or more than the distance between the center of the outermost fiber bundle and the fiber bundle adjacent thereto. delete delete delete delete delete delete The method according to claim 1, An interdental cleaning tool, characterized in that the cross-sectional shape of the gripping portion is one of a rough rectangle, a rough hexagon, and a rough oval. delete

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