WO2014065368A1 - Outil de nettoyage interdentaire - Google Patents

Outil de nettoyage interdentaire Download PDF

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Publication number
WO2014065368A1
WO2014065368A1 PCT/JP2013/078825 JP2013078825W WO2014065368A1 WO 2014065368 A1 WO2014065368 A1 WO 2014065368A1 JP 2013078825 W JP2013078825 W JP 2013078825W WO 2014065368 A1 WO2014065368 A1 WO 2014065368A1
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WO
WIPO (PCT)
Prior art keywords
cleaning
interdental
dynamic friction
cleaning tool
water
Prior art date
Application number
PCT/JP2013/078825
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English (en)
Japanese (ja)
Inventor
杏里 玄行
加藤　啓介
Original Assignee
サンスター株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by サンスター株式会社 filed Critical サンスター株式会社
Priority to JP2014543342A priority Critical patent/JPWO2014065368A1/ja
Publication of WO2014065368A1 publication Critical patent/WO2014065368A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C15/00—Devices for cleaning between the teeth
    • A61C15/02—Toothpicks
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B1/00—Brush bodies and bristles moulded as a unit
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D1/00—Bristles; Selection of materials for bristles
    • A46D1/02—Bristles details
    • A46D1/0207—Bristles characterised by the choice of material, e.g. metal
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B15/00—Other brushes; Brushes with additional arrangements
    • A46B15/0093—Magazins or sets of brushes components, e.g. plurality of brushes linked as a package
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B2200/00—Brushes characterized by their functions, uses or applications
    • A46B2200/10—For human or animal care
    • A46B2200/1066—Toothbrush for cleaning the teeth or dentures
    • A46B2200/108—Inter-dental toothbrush, i.e. for cleaning interdental spaces specifically

Definitions

  • the present invention relates to an interdental cleaning tool having a cleaning portion covered with an elastomer.
  • the interdental cleaning tool includes a handle base material made of synthetic resin, and a cleaning part formed by externally attaching a cleaning part main body made of elastomer on an elongated shaft-like core part of the handle base material, and the cleaning part main body is a core
  • An interdental cleaning tool having a covering part that covers a part and a plurality of cleaning protrusions protruding outward from the covering part has been put into practical use (for example, see Patent Document 1).
  • the interdental cleaning tool Compared with a conventional interdental brush having a cleaning part in which synthetic resin filaments are radially implanted with respect to a metal wire, the interdental cleaning tool has extremely small protrusion rigidity, The cleanability of the cleaning tool varies greatly due to the influence of the surface characteristics (dynamic friction coefficient) of the elastomer in the cleaning unit body.
  • the surface characteristics (dynamic friction coefficient) of the elastomer in the cleaning unit body is a relatively new technology, the evaluation of the cleaning performance using the dynamic friction coefficient has not yet been carried out.
  • An object of the present invention is to provide an interdental cleaning tool that is excellent in insertability between teeth and that can sufficiently ensure cleanability in a state where saliva is interposed.
  • An interdental cleaning tool includes a handle base material made of a synthetic resin, and a cleaning part formed by externally attaching a cleaning part main body made of an elastomer to an elongated shaft-like core part of the handle base material.
  • An interdental cleaning tool having a covering part that covers the core part and a plurality of cleaning protrusions protruding outward from the covering part, wherein the cleaning part body has a Shore A hardness of A25.
  • a dynamic friction coefficient when the friction coefficient in a state where water is not present in the cleaning unit is ⁇ d and the dynamic friction coefficient in the state where water is present is ⁇ w
  • the relational expression of 0.9 ⁇ ⁇ d ⁇ ⁇ w is established between the coefficients.
  • the covering portion is formed up to the tip of the core portion. If comprised in this way, even when the front-end
  • a line segment connecting the center of the tip of the cleaning part and the outer peripheral edge of the covering part at a position 10 mm from the tip of the cleaning part is defined as L1.
  • L2 is a line segment connecting the center of the distal end portion of the portion and the distal end portion of the most proximal projection, and an angle ⁇ 1 formed by the line segment L1 and the center line CL of the cleaning portion, and the line segment L2
  • the angle difference ( ⁇ 2 ⁇ 1) with respect to the angle ⁇ 2 formed with the center line CL of the cleaning unit is set to 3.0 ° to 7.5 °.
  • the contact angle of the elastomer with respect to water is desirably set to 65 ° to 95 °, preferably 70 ° to 95 °, more preferably 75 ° to 95 °. By setting the contact angle in such a numerical range, the cleaning property can be improved.
  • the interdental cleaning tool of the present invention when the dynamic friction coefficient in a state where water is not interposed in the cleaning unit is ⁇ d, and the dynamic friction coefficient in the state where water is interposed is ⁇ w, 0.9. Since the relational expression of ⁇ ⁇ d ⁇ ⁇ w is established, when the cleaning unit body is wet with saliva during interdental cleaning, the dynamic friction coefficient of the cleaning unit body is higher or lower than when the cleaning unit body is not wet. Even in this case, since the coefficient of dynamic friction is 90% or more when not wet, the cleaning property can be improved.
  • (A) of the interdental cleaning tool is a front view, and (b) is a side view.
  • II-II sectional view of FIG. Enlarged view of the cleaning section Sectional view taken along line IV-IV in FIG. Illustration of the method for measuring the dynamic friction coefficient Illustration of contact angle (A) of the interdental cleaning tool of an Example and a comparative example is a bar graph which shows a cleaning property, (b) is a bar graph which shows a dynamic friction coefficient.
  • (A) of the interdental cleaning tool of an Example and a comparative example is a bar graph which shows cleaning property,
  • (b) is a bar graph which shows a contact angle.
  • the interdental cleaning tool 1 includes a cleaning unit 2 for interdental cleaning and a handle unit 3 as a handle when distinguished by function, and distinguished by the material, A base part 10 made of synthetic resin and a soft part 20 made of elastomer are provided, and a plurality of pieces are connected in parallel so as to be detachable through a pair of connecting parts 13 provided integrally with the base part 10.
  • the interdental cleaning tool 1 can be configured independently by omitting the connecting portion 13.
  • the base material portion 10 made of a synthetic resin includes a flat and slender plate-like handle base material 11 that constitutes the handle portion 3, and an elongated shape that is connected to the distal end portion of the handle base material 11. And an axial core 12.
  • the handle base material 11 is formed in a flat and slender plate shape.
  • any shape other than the flat and slender plate shape for example, a circular shape, an oval shape, or a multi-layer shape can be used as long as it is easy to clean between the teeth by holding it by hand. It can also be formed in a rod shape having a cross-sectional shape such as a square.
  • the core portion 12 is formed in a substantially straight and elongated shaft shape, an exposed portion 12a exposed to the outside is formed on the base side of the core portion 12, and an elastomer is coated on the distal end side portion of the core portion 12 so that it is between teeth.
  • a core body 12b that can be inserted into the core is formed, and the core portion 12 is formed in a gently tapered shape that decreases in diameter toward the distal end side.
  • the length of the exposed portion 12a is set to, for example, 25 mm to 50 mm in consideration of operability, and the length of the core body 12b is set to, for example, 12 mm to 22 mm in consideration of the cleaning performance between the teeth.
  • the angle ⁇ formed by the taper shape with respect to the length direction of the core portion 12 is set to 0.2 ° to 1.5 ° in consideration of the insertion property between the teeth.
  • the diameter of the tip side portion of the core body 12b is set to 0.4 mm to 0.6 mm, the diameter of the base portion of the core body 12b is set to 0.8 mm to 2.0 mm, and at least 5 mm or more from the tip portion of the core body 12b. It is comprised so that the front end side part of the core main body 12b can be inserted between teeth reliably.
  • the angle ⁇ formed by the taper shape of the core portion 12 is set to the same angle ⁇ over the entire length of the core portion 12, but is set so as to decrease continuously or stepwise toward the tip end side of the core portion 12. You can also.
  • the exposed portion 12a may be formed in a shaft shape having the same diameter over the entire length, and only the core body 12b may be formed in a gently tapered shape that decreases in diameter toward the distal end side. Further, the exposed portion 12a can be omitted, and the core body 12b can be directly connected to the handle base 11.
  • Examples of the synthetic resin material constituting the substrate 10 include polypropylene, polyethylene, polyethylene terephthalate, polycyclohexylene dimethylene terephthalate, saturated polyester resin, polymethyl methacrylate, cellulose propionate, polyurethane, polyamide, polycarbonate, ABS (acrylonitrile.
  • Thermoplastic synthetic resin materials such as butadiene and styrene can be used.
  • polypropylene has compatibility with the styrene-based thermoplastic elastomer constituting the cleaning unit main body 21, has a low molding temperature, can shorten the cycle time and improve productivity, and has a small thermal load on the molding equipment. This is preferable.
  • the base material portion 10 it is also preferable to add fiber materials such as glass fiber, carbon fiber, and aramid fiber, and minerals such as mica and talc as additives to the synthetic resin material constituting the base material portion 10.
  • fiber materials such as glass fiber, carbon fiber, and aramid fiber, and minerals such as mica and talc
  • the base material portion molded by the first mold is used. Since the soft portion 20 is integrally formed with the base material portion 10, it is possible to prevent poor loading when the base portion 10 is loaded into the second mold for forming the soft portion 20.
  • the core portion 12 can be effectively prevented from being softened and deformed by the heat of the elastomer material when the cleaning portion main body 21 is molded, and Since the strength rigidity is increased by the additive, deformation of the core portion 12 due to the injection pressure of the elastomer material can be prevented, and molding defects of the cleaning portion main body 21 can be effectively prevented.
  • the blending ratio of the fiber material is easy to bend when it is less than 20% by weight, and it becomes difficult to insert the cleaning part 2 between teeth, and exceeds 40% by weight. Since the cleaning part 2 is easily broken, it is preferably set to 20% by weight or more and 40% by weight or less, and most preferably set to 25% by weight or more and 35% by weight or less.
  • the soft portion 20 is formed integrally with the base material portion 10 using an elastomer material, and includes a cleaning portion main body 21 that is externally mounted on the core portion 12.
  • the soft portion 20 it is also possible to provide an annular insertion restricting portion for restricting insertion between teeth at the proximal end portion of the core body 12b, or to provide a non-slip portion on the handle base 11.
  • the insertion restricting portion and the anti-slip portion can be formed independently of the cleaning portion main body 21, the mold structure is complicated, and thus it is preferable to form the insertion restricting portion and the anti-slip portion so as to continue to the base of the cleaning portion main body 21. .
  • the cleaning part main body 21 has a covering part 21a that covers the core part 12, and a plurality of protruding parts 21b that are formed on the covering part 21a so as to protrude outwardly at intervals in the length direction. Is provided up to the tip of the core 12.
  • the thickness of the covering portion 21a is too thick, the diameter of the covering portion 21a becomes large and the insertion property between the teeth decreases, and if it is too thin, the elastomer material cannot be filled up to the distal end portion or the proximal end portion of the cleaning portion 2.
  • the thickness is preferably set to 0.1 mm to 0.3 mm.
  • the protrusions 21b are formed at intervals in the length direction of the covering portion 21a, and are arranged at intervals in the circumferential direction of the covering portion 21a. More specifically, in the circumferential direction of the covering portion 21a, a set of two protruding portions 21b protruding from the covering portion 21a to one side of the mold opening / closing direction, and the other side of the mold opening / closing direction from the covering portion 21a.
  • a pair of protrusions 21b projecting from the cover part 21a, one protrusion part 21b projecting to one side along the mating surface of the mold, and the mating surface of the mold from the cover part 21a A total of six types of projections 21b, one projection 21b projecting to the other side, are disposed, and a plurality of sets of these six types of projections 21b are formed at intervals in the length direction of the covering portion 21a. Yes.
  • the protrusion 21b can be formed with an array pattern other than those described above.
  • the cross-sectional area, length, number, and arrangement pitch of the base end portion of the protruding portion 21b can be arbitrarily set, but the cross-sectional area of the base end portion of the protruding portion 21b is set in consideration of moldability and cleanability. , preferably set to about 0.03 mm 2 - 1.5 mm 2, the length of the protruding portion 21b is preferably set to about 0.5 mm ⁇ 2.0 mm, the number of the protrusions 21b is 20 to 100 It is preferable to set the number of protrusions 21b, and the pitch of the protrusions 21b is preferably set to 0.5 mm to 1.5 mm.
  • the cone-shaped thing was employ
  • the flat taper-shaped thing flat in an axial direction is also employable.
  • a cross-sectional shape of the protrusion 21b an arbitrary cross-sectional shape such as an ellipse or a polygon can be adopted in addition to a circle.
  • the present invention is a styrenic thermoplastic elastomer having a Shore A hardness of A25 to A55 as an elastomer constituting the cleaning unit main body 21, as shown in FIG.
  • the cleaning part 2A covering part 21a
  • the dynamic friction coefficient in a state where water is not interposed is ⁇ d
  • the dynamic friction coefficient in the state where water is interposed is ⁇ w
  • An elastomer that satisfies the relational expression of ⁇ d ⁇ ⁇ w is used.
  • the Shore A hardness is less than A25, it is too soft and the cleaning property is lowered, and when it exceeds A55, it is too hard and the stimulation to the gingiva becomes strong, so it is preferable to set it to A25 to A55. .
  • THERMOLLAST W (trade name) manufactured by KRAIBURG can be used as the elastomer constituting the cleaning unit main body 21.
  • THERMOLLAST W (trade name) manufactured by KRAIBURG
  • the dynamic friction coefficient of the cleaning unit body 21 is greatly reduced by getting wet with water.
  • THERMOLLAST W (made by KRAIBURG) Product name
  • the coefficient of dynamic friction is higher or lower than when not wet, even when the coefficient of dynamic friction is 90% or higher when not wet with water.
  • a line segment connecting the center of the tip of the cleaning part 2 and the outer peripheral edge of the covering part 21a at a position 10 mm from the tip of the cleaning part 2 is L1
  • L2 is a line segment connecting the tip of the virtual projection of the most proximal end and the center of the tip of the cleaning unit 2 when it is assumed that exists at the most proximal end, and the line L1 and the cleaning unit
  • the angle difference ( ⁇ 2 ⁇ 1) between the angle ⁇ 1 formed by the center line CL of 2 and the angle ⁇ 2 formed by the line segment L2 and the center line CL of the cleaning unit 2 is set to 3.0 ° to 7.5 °. It is preferable. That is, as the angle difference ( ⁇ 2 ⁇ 1) is larger, the dynamic friction coefficient is less decreased or increased due to the presence or absence of water, and therefore the angle difference ( ⁇ 2 ⁇ 1) is at least 3.0 ° or more. preferable.
  • the protrusion 21b may be cut during use. Therefore, it is preferably set to 7.5 ° or less.
  • the average height of the three protruding portions 21b from the most proximal end portion of the cleaning portion 2 is preferably set to 0.7 mm to 2.3 mm, preferably 0.8 mm to 2.0 mm.
  • the elastomer constituting the cleaning unit main body 21 is a styrene-based thermoplastic elastomer having a water contact angle ⁇ 3 of 65 ° to 95 °, preferably 70 ° to 95 °, more preferably 75 ° to 95 °. Since the cleaning property can be improved, it is preferable.
  • the contact angle ⁇ 3 is a tangent to the droplet surface at the position of the solid surface S in the droplet Li formed on the solid surface S when the liquid is dropped onto the flat solid surface S. It means the angle formed by L3 and the solid surface S. As the contact angle ⁇ 3 increases, the physical properties become difficult to wet with the liquid.
  • THERMOLLAST W trade name
  • Example 2 As the interdental cleaning tool of Example 2, the angle ⁇ 1 was set to 3.6 °, the angle ⁇ 2 was set to 8.4 °, and the average height of the three protrusions from the most proximal end portion was set to 1.5 mm.
  • Comparative Example 1 As an interdental cleaning tool of Comparative Example 1, a general-purpose styrene-based thermoplastic elastomer (the THERMOLLAST K (trade name) manufactured by KRAIBURG) in which the soft part 20 is adjusted so that the Shore A hardness is A30, A40, A60
  • the interdental cleaning tool of Comparative Example 1.30, Comparative Example 1.40, and Comparative Example 1.60 which were comprised similarly to Example 1 except having comprised in Example 1 was manufactured.
  • the soft part 20 is composed of a general-purpose styrene-based thermoplastic elastomer (THERMOLLAST K (trade name) manufactured by KRAIBURG) whose components are adjusted so that the Shore A hardness is A40.
  • THERMOLLAST K trade name
  • the interdental cleaning tool of the comparative example 2.40 which comprised similarly to Example 2.40.
  • the angle ⁇ 1 is set to 4.1 °
  • the angle ⁇ 2 is set to 11.3 °
  • the average height of the three protrusions from the most proximal end portion is set to 2.0 mm
  • the soft portion The composition was the same as in Example 1.30 except that it was composed of a general-purpose styrenic thermoplastic elastomer (THERMOLLAST K (trade name) manufactured by KRAIBURG) whose components were adjusted so that the hardness of 20 Shore A was A30.
  • THERMOLLAST K trade name
  • the interdental cleaning tool of Comparative Example 3.30 was manufactured.
  • Table 1 shows the height of the projection at the most proximal end, the height of the second projection from the most proximal end, and the third projection from the most proximal end in Examples 1 and 2 and Comparative Examples 1 to 3. The height of the part and the average height of these three protrusions are shown together.
  • a pseudo plaque (trade name “Occlude”, Pascal Company Inc.) is applied to the part that will form the interdental surface of the pseudo interdental model, and Examples 1 and 2, Comparative Examples 1, 2, and Comparative Example G are applied.
  • the interdental cleaning tool was used to insert and withdraw each pseudo interdental portion once to clean the pseudo plaque.
  • the interdental width of the pseudo interdental model the interdental width of the passage hole diameter of each interdental brush sample +0.1 mm measured by the equipment and procedure described in ISO16409 was used. After the wiping, the interdental surface of the pseudo interdental model was photographed, and the removal rate of the pseudo plaque was calculated as the cleaning property by image analysis using image processing software (Photoshop manufactured by Adobe). For the interdental cleaning tool other than Comparative Example G, the change rate (%) of the cleaning property is expressed by the formula of ((cleaning property (wet) ⁇ cleaning property (dry)) / cleaning property (dry)) ⁇ 100. Calculated.
  • a dynamic friction coefficient measuring device As a dynamic friction coefficient measuring device, TL201Ts manufactured by Trinity Lab Co., Ltd. is used, and as shown in FIG. 5, an interdental cleaning tool having a cleaning portion 2A obtained by cutting the protrusion 21b from the root on the moving table 30 of the measuring device.
  • the surface contactor 31 of the measuring device having a contact area of 10 ⁇ 10 mm is pressed and placed so that a load W of 100 g acts on the cleaning unit 2A.
  • the force F acting on the surface contact 31 when the moving table 30 was moved in the direction indicated by arrow A in FIG. 5 at a moving speed of 10 mm / sec was measured to calculate the dynamic friction coefficient.
  • Table 2 shows the measurement results of the cleanability, dynamic friction coefficient, and contact angle obtained in this way.
  • the removal rate of the pseudo plaque in the dry state and the wet state of the interdental cleaning tool of Examples 1 and 2 and Comparative Examples 1 and 2 is shown in FIG. 7A, and Examples 1 and 2 and Comparative Examples 1 to 3 are shown.
  • FIG. 7B shows dynamic friction coefficients of the interdental cleaning tool in the dry state and the wet state.
  • the removal rate of the pseudo plaque in the wet state of the interdental cleaning tool of Comparative Example G, Comparative Examples 1.30, 1.40 and Example 1 is shown in FIG. 8A, and the contact angle is shown in FIG. ).
  • the measurement result was obtained as an average value obtained by measuring the cleaning property, the dynamic friction coefficient, and the contact angle three times each.
  • “sd” in Table 2 is a standard deviation.
  • the coefficient of dynamic friction ⁇ w (wet) in the state in which the water of Comparative Examples 1, 2, and 3 using a general-purpose styrene-based thermoplastic elastomer (THERMOLLAST K (trade name) manufactured by KRAIBURG) is interposed is water.
  • the styrene-based thermoplastic elastomer (THERMOLLAST W (trade name) manufactured by KRAIBURG) was used.
  • the dynamic friction coefficient ⁇ w (wet) in the state where water is interposed in Examples 1 and 2 is compared with the dynamic friction coefficient ⁇ d (dry) in the state where water is not interposed as in Example 1.30.
  • Example 1.40 and Example 2.40, and lower as in Example 1.50 Even if it is the same or higher as in Example 1.40 and Example 2.40, and lower as in Example 1.50, the rate of decrease is relatively small, less than 90%. It can be seen that a lower rate.
  • Comparative Example 1.60 Even in the state where water is present, cleaning performance equivalent to that of Example 1.30 is obtained, but the Shore A hardness is as high as A60, and stimulation of the gums is caused during cleaning. Since it became strong, it was difficult to use as a cleaning tool.

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  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Brushes (AREA)

Abstract

[Problème] Produire un outil de nettoyage interdentaire qui présente une excellente capacité d'insertion interdentaire, et est capable d'assurer suffisamment les propriétés de nettoyage lorsque de la salive est présente. [Solution] La présente invention concerne un outil de nettoyage interdentaire (1) équipé d'un support de poignée (11) comprenant une résine synthétique, et une partie de nettoyage (2) obtenue par gainage de l'âme en forme de tige longue et mince (12) du substrat de poignée (11) dans un corps de partie de nettoyage (21) comprenant un élastomère, le corps de partie de nettoyage (21) ayant une section de couverture (21a) pour recouvrir l'âme (12) et une pluralité de saillies de nettoyage (21b) pour projeter vers l'extérieur depuis la section de couverture (21a). De plus, le corps de partie de nettoyage (21) est fabriqué à partir d'un élastomère thermoplastique à base de styrène ayant une dureté Shore (A) de A25 à A55, et étant donné que le coefficient de friction dynamique quand de l'eau n'est pas intercalée dans la partie de nettoyage (2A) est µd, et le coefficient de frottement dynamique lorsque de l'eau est intercalée dans celle-ci est µw, alors l'expression relationnelle 0,9 × µd ≤ µw entre les deux coefficients de frottement dynamique est satisfaite.
PCT/JP2013/078825 2012-10-24 2013-10-24 Outil de nettoyage interdentaire WO2014065368A1 (fr)

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Cited By (13)

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Publication number Priority date Publication date Assignee Title
WO2016076241A1 (fr) 2014-11-11 2016-05-19 サンスター株式会社 Outil de nettoyage interdentaire
WO2016113928A1 (fr) * 2015-01-16 2016-07-21 小林製薬株式会社 Instrument de nettoyage interdentaire
JP2016131899A (ja) * 2016-04-04 2016-07-25 小林製薬株式会社 歯間清掃具
JP2017000319A (ja) * 2015-06-08 2017-01-05 サンスター スイス エスエー 歯間清掃具
JP2017086775A (ja) * 2015-11-17 2017-05-25 小林製薬株式会社 歯間清掃具群
JP2017108998A (ja) * 2015-12-18 2017-06-22 小林製薬株式会社 歯間清掃具
JP2017109019A (ja) * 2015-12-18 2017-06-22 小林製薬株式会社 歯間清掃具
JP2017109018A (ja) * 2015-12-18 2017-06-22 小林製薬株式会社 歯間清掃具
JP2017176488A (ja) * 2016-03-30 2017-10-05 小林製薬株式会社 歯間清掃具及び歯間清掃具群
GB2557262A (en) * 2016-12-02 2018-06-20 Peri Dent Ltd Apparatus for interdental cleaning and method for manufacturing the same
JP2018126593A (ja) * 2018-04-25 2018-08-16 小林製薬株式会社 歯間清掃具
WO2022004579A1 (fr) 2020-06-30 2022-01-06 小林製薬株式会社 Instrument de nettoyage interdentaire
USD1021416S1 (en) 2021-03-02 2024-04-09 Esro Ag Interdental cleaner

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Cited By (26)

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Publication number Priority date Publication date Assignee Title
WO2016076241A1 (fr) 2014-11-11 2016-05-19 サンスター株式会社 Outil de nettoyage interdentaire
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