WO2020137250A1 - Outil de nettoyage interdentaire - Google Patents

Outil de nettoyage interdentaire Download PDF

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Publication number
WO2020137250A1
WO2020137250A1 PCT/JP2019/045065 JP2019045065W WO2020137250A1 WO 2020137250 A1 WO2020137250 A1 WO 2020137250A1 JP 2019045065 W JP2019045065 W JP 2019045065W WO 2020137250 A1 WO2020137250 A1 WO 2020137250A1
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WO
WIPO (PCT)
Prior art keywords
cleaning tool
interdental cleaning
base
ratio
protrusion
Prior art date
Application number
PCT/JP2019/045065
Other languages
English (en)
Japanese (ja)
Inventor
侑 吉川
紘貴 朝山
Original Assignee
小林製薬株式会社
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 小林製薬株式会社 filed Critical 小林製薬株式会社
Publication of WO2020137250A1 publication Critical patent/WO2020137250A1/fr

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Classifications

    • 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

Definitions

  • the present invention relates to an interdental cleaning tool.
  • the interdental cleaning tool disclosed in Patent Document 1 includes a base material part made of synthetic resin and a soft part made of elastomer.
  • the base material portion includes a flat handle portion serving as a handle, and an elongated core base material portion extending from the tip of the handle portion.
  • the soft portion includes a covering portion that covers at least a part of the core base material portion, and a plurality of protruding portions that protrude from the surface of the covering portion.
  • the core base material portion is formed in a taper shape whose diameter decreases toward the tip thereof. Further, the protruding portion also becomes smaller toward the tip of the interdental cleaning tool, and it is possible to effectively clean a relatively narrow interdental space to a relatively wide interdental space.
  • the protrusions of the interdental cleaning tool are used not only for cleaning the interdental tooth, which is the first purpose, but also for the purpose of touching the gums and massaging the gums during cleaning, especially the gums are lowered. Needs are high after middle-aged and older.
  • an object of the present invention is to provide an interdental cleaning tool in which the interdental insertability and the gingival massage force are balanced in a region where the diameter of the shaft portion is relatively large.
  • An interdental cleaning tool covers a base portion having a base portion and a shaft portion extending from the base portion, and the shaft portion covering at least 16 mm from the distal end to the base end of the shaft portion.
  • a soft portion having a covering portion and a plurality of protrusions protruding from the covering portion, and a boundary with the covering portion in a region of the covering portion in a range of 15 mm to 20 mm from a tip end to a base end of the shaft portion.
  • the ratio (L/M) of the area of the bottom surface of the protrusion (M:mm 2 ) and the length of the protrusion from the bottom surface (L:mm) is set to 2 to 5, area of the bottom surface (M) is set to 0.9 cm 2 ⁇ 0.15 cm 2 with respect to the ratio (L / M) is 2 to 5.
  • the ratio (L/M) is set to 4.4 to 4.8, and the area (M) of the bottom surface of the protrusion is such that the ratio (L/M) is 4.4 to 4.8. Is more preferably set to 0.42 mm 2 to 0.34 mm 2 .
  • an interdental cleaning tool in which the interdental insertability and the gingival massage force are balanced in a region where the shaft portion has a relatively large diameter.
  • FIG. 3 is a sectional view taken along line 3-3 of FIG. 1. It is a table
  • an interdental cleaning tool 1 includes a base material portion 10 and a soft portion 20 that covers at least a part of the base material portion 10. ing.
  • the interdental cleaning tool 1 for example, ten interdental cleaning tools 1 are connected in parallel in the lateral direction D1 of the interdental cleaning tool 1 by a pair of connecting portions 30 formed on the base material part 10. It is individually separated from the formed connecting body 40.
  • the base material part 10 extends in a longitudinal direction D2 orthogonal to the lateral direction D1 of the interdental cleaning tool 1 from the tip of the base part 11 that is gripped by the user, and is inserted between the teeth of the user. And a shaft portion 12 that is provided.
  • the side from the base portion 11 toward the shaft portion 12 is referred to as the tip end side
  • the side from the shaft portion 12 toward the base portion 11 is referred to as the base end side.
  • the base 11 is formed in, for example, a flat plate shape, and is formed in, for example, a flat rectangular parallelepiped shape in the present embodiment, but may be formed in any other shape as long as it can be grasped by a user. May be done.
  • the shaft portion 12 extends in the longitudinal direction D2 from a tip that is one end of the base portion 11.
  • the shaft portion 12 includes a transition portion 13 that continuously extends from the base portion 11 in a flat plate shape, and a tip portion 14 that extends in a thin shaft shape from the tip of the transition portion 13 to the tip of the shaft portion 12. ..
  • the transition portion 13 is formed in a tapered shape in which the width defined along the lateral direction D1 decreases toward the tip of the shaft portion 12.
  • the base material portion 10 is formed of, for example, a synthetic resin material.
  • a synthetic resin material for example, polypropylene, polyethylene, ABS (acrylonitrile butadiene styrene), polybutylene terephthalate, polycarbonate, polyethylene terephthalate, polystyrene, polyacetal, polyamide or the like can be used.
  • a fiber material such as glass fiber may be added to the synthetic resin material in a ratio of, for example, about 1 to 30% by weight.
  • the soft portion 20 includes a covering portion 21 that covers at least a part of the outer peripheral surface of the tip portion 14 of the shaft portion 12, and a plurality of protruding portions 22 that protrude from the covering portion 21.
  • the protrusion 22 is formed, for example, in a conical shape, and is arranged spirally around the axis of the tip portion 14 of the shaft portion 12 from the base end to the tip of the covering portion 21.
  • the height of the protrusion 22 from the outer peripheral surface of the covering portion 21 decreases from the base end of the covering portion 21 toward the tip thereof.
  • the soft portion 20 is formed of a resin material having a hardness lower than that of the synthetic resin material of the base portion 10.
  • An elastomer can be adopted as the resin material, and as the elastomer, a styrene elastomer, a silicone, an olefin elastomer, a polyester elastomer or the like may be used.
  • the durometer hardness type A (JISK6253) of the elastomer is preferably 10 to 50, and more preferably 10 to 40. In this embodiment, the durometer hardness type A is 35.
  • the length L1 of the base material portion 10 defined in the longitudinal direction D2 is set to, for example, 45 mm to 55 mm.
  • the width W1 of the base 11 defined in the lateral direction D1 is set to, for example, 3 mm to 10 mm.
  • the thickness T1 of the base 11 defined in the thickness direction D3 orthogonal to the lateral direction D1 and the longitudinal direction D2 is set to, for example, 0.5 mm to 10 mm.
  • the length of the covering portion 21 from the base end to the tip defined in the longitudinal direction D2 is set, for example, to 10 mm to 25 mm, and in the present embodiment, it is set to 20 mm, for example.
  • the covering portion 21 is formed with a uniform thickness at the same position in the longitudinal direction D2, and the thickness is set to, for example, 0.1 mm to 2.5 mm.
  • the length (that is, the height from the bottom surface of the cone to the apex) of the projection portion 22 from the bottom surface of the projection portion 22 (that is, the circular bottom surface of the cone) serving as the boundary with the covering portion 21 is, for example, 0.1 mm to 5 mm. It is set to 0.0 mm.
  • the cross section of the tip portion 14 of the shaft portion 12 orthogonal to the axis of the shaft portion 12 is set to be substantially a circular shape.
  • the tip portion 14 is formed in a tapered shape whose diameter decreases from the base end toward the tip, and the diameter thereof is set to, for example, 0.6 mm to 3.0 mm.
  • the bottom surface of the protruding portion 22 serving as a boundary with the covering portion 21.
  • the ratio (L/M) between the area (M:mm 2 ) and the length (L:mm) of the protrusion 22 from the bottom surface of the protrusion 22 is set to 2 to 5.
  • Area of the bottom surface of the projecting portion 22 of the case (M) is set to 0.9 cm 2 ⁇ 0.15 cm 2 with respect to the ratio (L / M) is 2 to 5. Further, it is more preferable that this ratio (L/M) is set to 4.4 to 4.8.
  • the present inventors verified the effect of the interdental cleaning tool 1 of the above embodiment.
  • an interdental cleaning tool according to Examples 1 to 4 and an interdental cleaning tool according to Comparative Examples 1 and 2 were manufactured.
  • the thickness of the soft portion is 0.22 mm in the range of 15 mm to 20 mm from the tip end to the base end of the shaft portion.
  • the ratio (L/M) of the area (M: mm 2 ) of the bottom surface of the protrusion to the length (L: mm) of the protrusion from the bottom surface of the protrusion is as shown in FIG.
  • Example 2 Example 3, Example 4, and Comparative Example 2 verification was performed with an interdental cleaning tool set to 7.6, 5, 4.8, 4.4, 2, 1, respectively. Carried out. Note that each area of the bottom surface of the protrusion (M) is, 0.08mm 2, 0.15mm 2, 0.34mm 2, 0.42mm 2, 0.9mm 2, was set to 1.1 mm 2.
  • the present inventors evaluated the ease of insertion (insertability) of the interdental cleaning tool according to Examples 1 to 4 and Comparative Examples 1 and 2 and the viewpoint of massaging force on the gingiva by evaluators (5 persons). ) Asked about the evaluation when the interdental cleaning tool was used.
  • the insertability and the massage power were evaluated in an 11-level evaluation using numerical values from 0 to 10. 0 points were "I could not insert between the teeth” or "I could not get a feeling of massaging", and 10 points were "I could insert it without resistance between the teeth” or "Satisfactory massage” I was able to do it.”
  • Example 1 the insertability is “ ⁇ ”, the massage force is “ ⁇ ”, and the comprehensive evaluation is “ ⁇ ”.
  • Example 4 the massage force is “ ⁇ ” while the insertability is “ ⁇ ”, and the comprehensive evaluation is “ ⁇ ” as in Example 1.
  • each of them has a rating of “ ⁇ ” or “ ⁇ ” on the one hand and no rating of “x”, so that Examples 1 and 4 are also acceptable.
  • the ratio (L/M) may be set in the range of 2-5. In this case, the area (M) with respect to the ratio (L / M) is 2 to 5 is set to 0.9cm 2 ⁇ 0.15cm 2.
  • the molten synthetic resin material is filled in the filling space of the first mold, which is shaped like the outer shape of the base material portion 10, to form the base material portion 10. Then, the base material part 10 is taken out from the first mold. Subsequently, the molded base material portion 10 is placed in the filling space of the second mold, which is shaped like the outer shape of the soft portion 20. The filled space is filled with the melted elastomer to form the soft portion 20. In this way, the interdental cleaning tool 1 is molded. The interdental cleaning tool 1 is then taken out of the second mold.

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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

La présente invention concerne un outil de nettoyage interdentaire dans lequel l'aptitude à l'insertion entre les dents est bien équilibrée avec une capacité de massage des gencives dans une région dans laquelle le diamètre d'une section de tige est relativement grand. Ledit outil de nettoyage interdentaire (1) est pourvu : d'une partie matériau de base (10) comportant une section de base (11), et d'une section de tige (12) s'étendant depuis la section de base (11) ; et d'une partie molle (20) qui présente une partie couvercle (21) pour recouvrir la section de tige (12) sur au moins 16 mm depuis la pointe vers l'extrémité de base de la section de tige (12) et une pluralité de sections faisant saillie (22) qui font saillie depuis la partie couvercle (21). Dans la région de la partie couvercle (21) dans la plage de 15 à 20 mm depuis la pointe vers l'extrémité de base de la section de tige (12), le rapport (L/M) de la longueur (L) des sections faisant saillie (22) depuis la surface inférieure des sections faisant saillie (22) vers la zone (M) de la surface inférieure des sections faisant saillie (22) servant de frontière avec la partie couvercle (21) est défini à 2 à 5, et la zone (M) de la surface inférieure des sections faisant saillie (22) est définie à 0,9 à 0,15 mm2 où le rapport (L/M) est de 2 à 5.
PCT/JP2019/045065 2018-12-28 2019-11-18 Outil de nettoyage interdentaire WO2020137250A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018248340A JP7565673B2 (ja) 2018-12-28 2018-12-28 歯間清掃具
JP2018-248340 2018-12-28

Publications (1)

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WO2020137250A1 true WO2020137250A1 (fr) 2020-07-02

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0123049B2 (fr) * 1981-12-30 1989-04-28 Nippon Denki Hoomu Erekutoronikusu Kk
JP2000166945A (ja) * 1998-12-04 2000-06-20 Sanshu Precision:Kk 歯間清掃具及びその製造方法
US20140008837A1 (en) * 2013-09-09 2014-01-09 Dennis Eatherton Method of Manufacturing an Interdental Cleaner
WO2016076241A1 (fr) * 2014-11-11 2016-05-19 サンスター株式会社 Outil de nettoyage interdentaire
JP2017000777A (ja) * 2015-06-12 2017-01-05 サンスター株式会社 歯間清掃具

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6423049B1 (ja) 2017-06-28 2018-11-14 小林製薬株式会社 歯間清掃具

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0123049B2 (fr) * 1981-12-30 1989-04-28 Nippon Denki Hoomu Erekutoronikusu Kk
JP2000166945A (ja) * 1998-12-04 2000-06-20 Sanshu Precision:Kk 歯間清掃具及びその製造方法
US20140008837A1 (en) * 2013-09-09 2014-01-09 Dennis Eatherton Method of Manufacturing an Interdental Cleaner
WO2016076241A1 (fr) * 2014-11-11 2016-05-19 サンスター株式会社 Outil de nettoyage interdentaire
JP2017000777A (ja) * 2015-06-12 2017-01-05 サンスター株式会社 歯間清掃具

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JP2020103849A (ja) 2020-07-09
JP7565673B2 (ja) 2024-10-11

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