WO2020183796A1 - Instrument de nettoyage interdentaire - Google Patents

Instrument de nettoyage interdentaire Download PDF

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Publication number
WO2020183796A1
WO2020183796A1 PCT/JP2019/045070 JP2019045070W WO2020183796A1 WO 2020183796 A1 WO2020183796 A1 WO 2020183796A1 JP 2019045070 W JP2019045070 W JP 2019045070W WO 2020183796 A1 WO2020183796 A1 WO 2020183796A1
Authority
WO
WIPO (PCT)
Prior art keywords
covering
cleaning tool
base
interdental cleaning
hardness
Prior art date
Application number
PCT/JP2019/045070
Other languages
English (en)
Japanese (ja)
Inventor
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 WO2020183796A1 publication Critical patent/WO2020183796A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B9/00—Arrangements of the bristles in the brush body
    • A46B9/02—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups
    • A46B9/04—Arranged like in or for toothbrushes
    • 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 formed of a synthetic resin and a soft part formed of an 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 coating portion that covers at least a part of the core base material portion, and a plurality of protrusions that protrude from the surface of the coating portion. Each protrusion is formed in a conical shape, for example.
  • the core base material portion is formed in a tapered shape whose diameter decreases toward the tip thereof.
  • the protrusions also become smaller toward the tip of the core base material, and it is possible to effectively clean from relatively narrow interdental spaces to relatively wide interdental spaces.
  • the protrusions are used not only for the purpose of cleaning the interdental space, which is the primary purpose, but also for the purpose of touching the gums and massaging the gums during cleaning, especially after middle-aged and elderly people whose gums are lowered. Needs are high.
  • an object of the present invention is to provide an interdental cleaning tool capable of achieving both ease of insertion into the interdental space and sufficient massage force to the gingiva.
  • the interdental cleaning tool covers a base portion having a base portion and a shaft portion extending from the base portion, and the shaft portion over at least 16 mm from the tip end to the base end of the shaft portion.
  • a soft portion having a covering portion and a plurality of protrusions protruding from the coating portion, and the thickness of the covering portion in the region of the covering portion in the range of 15 mm to 20 mm from the tip end to the base end of the shaft portion. Is set to 0.15 mm to 0.3 mm, and the shore A hardness of the material forming the soft portion is set to 30 to 60.
  • the length of the protrusion from the surface of the covering portion is preferably set to 1 mm to 5 mm.
  • an interdental cleaning tool capable of achieving both ease of insertion into the interdental space and sufficient massage force to the gingiva.
  • the 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.
  • 10 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 and 30 formed on the base material portion 10. It is individually separated from the connection body 40 formed as described above.
  • the base material portion 10 extends between the base portion 11 gripped by the user and the longitudinal direction D2 orthogonal to the lateral direction D1 of the interdental cleaning tool 1 from the tip of the base portion 11 and is inserted between the teeth of the user.
  • a shaft portion 12 that In the present specification, the side from the base portion 11 toward the shaft portion 12 is the tip end side, and the side from the shaft portion 12 toward the base portion 11 is the base end side.
  • the base 11 is formed in a plate shape that spreads flat, for example, and in the present embodiment, it is formed in a flat rectangular parallelepiped shape, for example, but it is formed in another shape as long as it can be grasped by the user. May be done.
  • the shaft portion 12 extends in the longitudinal direction D2 from the tip end which is one end of the base portion 11.
  • the shaft portion 12 includes a transition portion 13 that extends continuously from the base portion 11 in a flat plate shape, and a tip portion 14 that extends from the tip of the transition portion 13 to the tip of the shaft portion 12 in a thin axial shape. ..
  • 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 and the like can be adopted.
  • a fiber material such as glass fiber may be added to the synthetic resin material in a ratio of 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 protrusions 22 that protrude from the covering portion 21.
  • the protrusion 22 is formed in a conical shape, for example, and is arranged from the base end to the tip end of the covering portion 21 in a spiral shape, for example, around the axis of the tip end portion 14 of the shaft portion 12.
  • the height of the protrusion 22 from the outer peripheral surface of the covering portion 21 decreases from the base end to the tip of the covering portion 21.
  • the soft portion 20 is formed of a resin material having a shore A hardness lower than the shore A hardness of the synthetic resin material of the base 10.
  • An elastomer can be used as the resin material, and as the elastomer, a styrene-based elastomer, silicone, an olefin-based elastomer, a polyester-based elastomer, or the like may be used.
  • the shore A hardness of the elastomer is preferably 10 to 60 for the durometer hardness type A (JISK6253).
  • 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 portion 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 cross section of the tip portion 14 of the shaft portion 12 orthogonal to the axis of the shaft portion 12 is set to have a substantially perfect circular shape.
  • the tip portion 14 is formed in a taper 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 length from the base end to the tip of the covering portion 21 defined in the longitudinal direction D2 is set to, for example, 10 mm to 25 mm, and is set to, for example, 20 mm in the present embodiment.
  • the covering portion 21 is formed to have a uniform thickness at the same position in the longitudinal direction D2, and the thickness B thereof is set to, for example, 0.1 mm to 2.5 mm.
  • the length A of the protrusion 22 from the bottom surface of the protrusion 22 (that is, the circular bottom surface of the cone) which is the boundary with the covering portion 21 (that is, the height from the bottom surface of the cone to the apex). ) Is set to, for example, 0.1 mm to 5.0 mm. In the present embodiment, as is clear from FIG. 3, the length A of each protrusion 22 decreases from the base end to the tip end of the covering portion 21.
  • the area M of the bottom surface of each protrusion 22 is set to, for example, 0.05 mm 2 to 0.5 mm 2 . Similar to the length A, the area M of the bottom surface of each of the protrusions 22 also decreases from the base end to the tip end of the covering portion 21.
  • the length A of the protrusion 22 is set to 1 mm to 5 mm in the region of the covering portion 21 in the range of 15 mm to 20 mm from the tip end to the base end of the shaft portion 12.
  • the thickness B of the covering portion 21 is set to 0.15 mm to 0.3 mm
  • the shore A hardness C of the material of the soft portion 20 is set to 30 to 60. According to the setting of such a ratio, as will be explained in the verification result described later, it is possible to provide the interdental cleaning tool 1 capable of ensuring the ease of insertion into the interdental space and sufficient massage force to the gingiva. it can.
  • the thickness B of the covering portion 21 is set to 0.22 mm to 0.25 mm, and the shore A hardness C of the material of the soft portion 20 is 35. It is more preferable to set it to ⁇ 45.
  • the present inventors have verified the effects of the interdental cleaning tool 1 of the above embodiment.
  • the interdental cleaning tools according to Examples 1 to 18 and the interdental cleaning tools according to Comparative Examples 1 to 10 were manufactured. Specifically, in the region of the covering portion (the diameter of the shaft portion is 1.04 mm to 1.27 mm) in the range of 15 mm to 20 mm from the tip end to the base end of the shaft portion, the length A of the protrusion portion is 1 mm to 5 mm.
  • the thickness B of the covering portion was changed to 0.05 mm to 0.5 mm, and the shore A hardness C of the soft portion was changed to 10 to 70, respectively.
  • the present inventors have evaluated (5 persons) regarding the ease of inserting the interdental cleaning tool (insertability) and the massage force into the gingiva according to Examples 1 to 18 and Comparative Examples 1 to 10 described above. ) was asked to evaluate the use of the interdental cleaning tool.
  • the evaluation of insertability and massage power was carried out on an 11-point scale with numerical values from 0 to 10 points. 0 points were "could not be inserted between the teeth" or "the feeling of massage was not obtained", and 10 points were "satisfied with the insertion between the teeth”. I was able to massage. "
  • ⁇ Average score is 7.5 or higher ⁇ Average score is 5.0 or more and less than 7.5 ⁇ Average score is 2.5 or more and less than 5.0 ⁇ Average score is less than 2.5 [Massage power] ⁇ Average score is 7.5 or higher ⁇ Average score is 5.0 or more and less than 7.5 ⁇ Average score is 2.5 or more and less than 5.0 ⁇ Average score is less than 2.5 [Comprehensive evaluation] ⁇ or more There is ⁇ or ⁇ while there is ⁇ ⁇ There is even one ⁇
  • Comparative Example 4 Comparative Example 5, Examples 6 to 11, and Comparative Example 6.
  • the length A (1.83 mm) of the protrusion and the thickness B (0.22 mm) of the coating were set under the same conditions.
  • the shore A hardness C of the soft portion was changed.
  • Comparative Examples 4 and 5 in which the shore A hardness C of the soft portion was set to 10 and 20, respectively, the massage power was “x” and the overall evaluation was also “x”.
  • Comparative Example 6 in which the shore A hardness C of the soft portion was set to 70, both the insertability and the massage force were “x”, and the overall evaluation was also “x”.
  • Comparative Example 2 Comparative Example 3, Example 4 and Example 5.
  • the length A (1.83 mm) of the protrusion and the shore A hardness C (40) of the soft portion were set under the same conditions.
  • the thickness B of the covering portion was changed.
  • the insertability was “ ⁇ ”, but the massage power was "x”, and the overall evaluation was also "x”.
  • the insertability was “ ⁇ ” or “ ⁇ ”
  • the massage power was both “ ⁇ ”
  • the overall evaluation was “ ⁇ ” or “ ⁇ ”. According to this result, when the length A of the protrusion is 1.83 mm and the shore A hardness C of the soft portion is 40, the lower limit of the thickness B of the covering portion is 0.15. I understand.
  • Example 12 Example 13, Comparative Example 7 and Comparative Example 8.
  • the length A (1.83 mm) of the protrusion and the shore A hardness C (40) of the soft portion were set under the same conditions as described above.
  • the thickness B of the covering portion was changed.
  • the massage force was “ ⁇ ”, but the insertability was “x”, and the overall evaluation was also “x”.
  • the insertability is " ⁇ " or " ⁇ ”
  • the massage power is both " ⁇ ”
  • the overall evaluation is " ⁇ ". there were.
  • the upper limit of the thickness B of the covering portion is 0.3.
  • the thickness B of the covering portion is preferably set to 0.15 to 0.3.
  • the length B of the covering portion was set within the above acceptable numerical range, while the length A of the protrusion portion and the shore A hardness C of the soft portion were changed.
  • the length A of the protrusion was set to be relatively large, such as 3 mm or 5 mm, while the shore A hardness C of the soft portion was set to 10, but the shore A hardness C of the soft portion was also low. It was too much to secure sufficient massage power.
  • both the insertability and the massage power were " ⁇ " or higher, and the overall evaluation was also " ⁇ " or higher.
  • the thickness A of the protrusion may be set to 2 mm to 5 mm.
  • the length A of the protrusion when the length A of the protrusion is set to 1 mm to 5 mm and the thickness B of the covering portion is too small (for example, less than 0.15 mm), sufficient massage force is secured.
  • the thickness B of the covering portion is too large (for example, larger than 0.3), the insertability is lowered.
  • the length A of the protrusion is set to 1 mm to 5 mm, if the shore A hardness C of the soft part is too small (for example, less than 30), sufficient massage force cannot be secured, while sufficient massage force cannot be secured.
  • the length A of the protrusion 22 is set to 1 mm to 5 mm
  • the thickness B of the covering portion 21 is set to 0.15 mm to 0.3 mm
  • the shore A hardness C of the material of the soft portion 20 is 30 to 60.
  • the molten synthetic resin material is filled in the filling space of the first mold that imitates the outer shape of the base material portion 10, and the base material portion 10 is molded. Then, the base material part 10 is taken out from the first mold. Subsequently, the molded base material portion 10 is arranged in the filling space of the second mold that imitates the outer shape of the soft portion 20. The filling space is filled with the melted elastomer to mold 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.
  • Interdental cleaning tool 10 ... Base material part, 11 ... Base part, 12 ... Shaft part, 20 ... Soft part, 21 ... Covering part, 22 ... Protrusion part, A ... Protrusion length, B ... Covering part Thickness, C ... Shore A hardness of soft part

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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

Le problème décrit par la présente invention est de fournir un outil de nettoyage interdentaire qui atteint à la fois une insertion facile entre les dents et une force de massage suffisante pour les gencives. À cet effet, ledit outil de nettoyage interdentaire (1) est pourvu : d'une partie de matériau de base (10) comportant une section de base (11), et d'une section d'arbre (12) s'étendant depuis la section de base (11) ; et d'une partie molle (20) qui présente une section de recouvrement (21) pour recouvrir la section d'arbre (12) sur au moins 16 mm depuis la pointe de la section d'arbre (12) vers l'extrémité de base et d'une pluralité de sections faisant saillie (22) qui font saillie depuis la section de recouvrement (21). Dans la région de la section de recouvrement (21) dans la plage de 15-20 mm de la pointe vers l'extrémité de base de la section d'arbre (12), l'épaisseur de la section de recouvrement (21) est fixée à 0,15-0,3 mm, et la dureté Shore (A) d'un matériau qui forme la partie molle (20) est fixée à 30-60.
PCT/JP2019/045070 2019-03-08 2019-11-18 Instrument de nettoyage interdentaire WO2020183796A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019-042210 2019-03-08
JP2019042210A JP2020141931A (ja) 2019-03-08 2019-03-08 歯間清掃具

Publications (1)

Publication Number Publication Date
WO2020183796A1 true WO2020183796A1 (fr) 2020-09-17

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PCT/JP2019/045070 WO2020183796A1 (fr) 2019-03-08 2019-11-18 Instrument de nettoyage interdentaire

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JP (1) JP2020141931A (fr)
WO (1) WO2020183796A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017000775A (ja) * 2015-06-12 2017-01-05 サンスター株式会社 歯間清掃具
JP2017118959A (ja) * 2015-12-28 2017-07-06 サンスター株式会社 歯間清掃具
US20180193119A1 (en) * 2016-07-14 2018-07-12 Sunstar Suisse S.A. Interdental cleaner

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017000775A (ja) * 2015-06-12 2017-01-05 サンスター株式会社 歯間清掃具
JP2017118959A (ja) * 2015-12-28 2017-07-06 サンスター株式会社 歯間清掃具
US20180193119A1 (en) * 2016-07-14 2018-07-12 Sunstar Suisse S.A. Interdental cleaner

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