EP0516675B1 - Brosse a dents - Google Patents

Brosse a dents Download PDF

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Publication number
EP0516675B1
EP0516675B1 EP91904375A EP91904375A EP0516675B1 EP 0516675 B1 EP0516675 B1 EP 0516675B1 EP 91904375 A EP91904375 A EP 91904375A EP 91904375 A EP91904375 A EP 91904375A EP 0516675 B1 EP0516675 B1 EP 0516675B1
Authority
EP
European Patent Office
Prior art keywords
bristle
bristles
holes
toothbrush
arc
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
EP91904375A
Other languages
German (de)
English (en)
Other versions
EP0516675A1 (fr
Inventor
Manfred Häusser
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BRANDT, HOLGER
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0516675A1 publication Critical patent/EP0516675A1/fr
Application granted granted Critical
Publication of EP0516675B1 publication Critical patent/EP0516675B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • A46B9/045—Arranged like in or for toothbrushes specially adapted for cleaning a plurality of tooth surfaces simultaneously
    • 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

Definitions

  • the invention relates to a toothbrush according to the preamble of claim 1.
  • toothbrushes have become known in a wide variety of embodiments. A particularly proven design is described in the PCT applications according to the publications WO 86/07527 and WO 89/01303. However, these known toothbrushes have in common with the rest of the prior art that the bristle holes on the bristle holder run in a straight line one behind the other, parallel to the main axis of the handle.
  • the generic toothbrush according to DE-C-674 288 comprises three brush heads which are arranged essentially within a U-shaped carrier and which are intended to enable the teeth to be gripped around on three sides during cleaning. Although some of the bristles of the lateral bristle fields are not arranged parallel to one another on straight lines, the cleaning result does not achieve the desired positive effects.
  • main axis will generally be the longitudinal axis, which, however, is bent in many ways in some embodiments of known toothbrushes, which of course do not occur in the rows of bristles.
  • the term “main axis” should therefore only refer to the general direction, neglecting bends and kinks.
  • tooth pockets i.e. the cavities below the edge of the gums on the tooth neck. Food residues easily get caught in these tooth pockets, which then lead to inflammatory processes.
  • a The main cause of this phenomenon is the plaque or plaque that slides under the gums and detaches them from the tooth neck.
  • a number of special toothpaste compositions have already been developed to combat this phenomenon, but nothing was known to counter this on the part of toothbrush design.
  • the invention is based on the object of designing a toothbrush or a bristle holder in such a way that he or she counteracts the phenomenon discussed above in the best possible way. This is achieved in a surprisingly simple manner by the features of the characterizing part of claim 1.
  • the bristle holes are arranged in an arc shape or along an arc with different radii, they adapt more flexibly to the arches that form the gumline edges on normal teeth when the brush is appropriately held or arranged appropriately. As clinical trials to be discussed later, this is the best way to clean the marginal and interdental gingiva.
  • This adaptation is particularly supported if the bristle holders are connected to the handle via elastic webs in a manner known per se and will be explained later and / or the bristles are of different lengths or hardness in the manner shown in the drawing.
  • the toothbrush is designed as an electric toothbrush, it is of course sufficient if the associated bristle holder, which can be releasably attached to it, is designed in the manner described in the characterizing part of claim 1.
  • the design of the toothbrush according to claim 1 and in particular also according to claim 3 also allows for some toothbrush constructions, in particular for simple toothbrushes, to be used in any position, and also allows cleaning of the upper and lower rows of teeth without having to change the position of the toothbrush.
  • toothbrush If the toothbrush is designed according to claim 4, its shape approximates that of the optimized design as described in the two WO documents mentioned at the beginning.
  • a bristle holder according to the invention has the features of claim 7, as a result of which - in contrast to the usual rectangular shape in plan view - it becomes approximately square.
  • This square shape is in connection with the above explanations for claim 1, because if it is important to adapt the toothbrush to the course of the gum line on the tooth neck, this is best achieved with such a shape.
  • this shape is not necessarily tied to the realization of the features of claim 1, because it can - in place of the arcuate configuration - the bristles also be adjusted in that the holes fill a square area, but softer at the corners of this square Bristles are provided so that the hard bristles are again arranged approximately along an arc. Also by different angular positions of the bristles arranged at the corners relative to the arranged in between achieve the desired adaptation to the arches of the gum line.
  • the embodiment according to claim 9 will be of particular interest if the bristle holder is intended for electric toothbrushes, but it can also be used for manually operated toothbrushes.
  • a connecting web 3 extends transversely or perpendicular to the main axis 2 of the handle 1.
  • This connecting web 3 carries bristles 4 which are intended to act on the chewing surfaces of the teeth upwards and downwards.
  • bristle holders 5 are articulated transversely thereto via a plastic joint 6, so that they can be elastically bent apart with deformation of the plastic joint 6 when a tooth is inserted between two bristle holders 5 with bristles 7, 8 facing one another.
  • the bristle length increases from the bristles 7 to the bristles 8, so that the bristles of two bristle holders 5 lying opposite one another delimit a space that opens towards the handle. This seems unusual in itself because the tooth to be inserted between them forms a cross-section of an oppositely directed triangle with its gingiva, but it has been shown that such a shape goes hand in hand with optimal cleaning effect and improved massage of the gums.
  • a preferred embodiment of a toothbrush or a bristle holder to solve the problems explained at the outset will now be described with reference to FIG. 2. It should be mentioned that with reference to FIG. 1, as a bristle holder 5, only a very narrowly limited part of a joint 6 is described, but that the bristle holder 5 may also include connection attachments, in particular if it is a pluggable or bristle holder that can be detachably attached.
  • Fig. 2 three teeth next to each other are indicated by dash-dot-dotted lines at 9.
  • the teeth 9 sit in the upper jaw and are covered at the top by the marginal gingiva 10, which runs in an arch-like manner in 90% of the inhabitants of cultivated countries.
  • at least one edge zone of the bristles 8 (FIG. 1) is arranged in a corresponding arc shape in bristle holes 8 '.
  • "Correspondingly” preferably means that the dash-dotted arc 11 on which the holes 8 'are located has a radius in the region from 3 mm to 10 mm, the latter digit actually representing the top area. It is cheaper to measure the arc radius not larger than 8 mm.
  • radii of 5 mm ⁇ 20% have proven particularly useful, although, as will be explained below, it is entirely conceivable and desirable to dimension the arc radii of different bristle hole arcs on the bristle holder or within the bristle array 12 arranged thereon.
  • the central bristles 15 are arranged in such a way that they together with the two bristle holes at the end of the arch 13 also result in an arc 16 which is parallel to the arc 11.
  • the arrangement of the bristle holes shown here means that the bristle holder 5 - as can be seen - is almost square in plan view of the bristle field 12 (although it would be entirely possible for simple toothbrushes with only one bristle holder and handle, corresponding to the contour 10 in succession Bends 11)), the diagonals through the bristle holder 5, which are shown here as dashed lines 17, enclosing an angle with one another in the range from 75 ° to 105 °, that is to say on average about 90 ° ⁇ 10%. It is irrelevant whether this angle is measured at the point alpha shown in FIG. 2 or its associated complementary angle, because both angles must necessarily lie in this range.
  • the resulting weakly rectangular to square shape is not only advantageous for toothbrushes of the type shown in FIG. 1, although it is also most easily applicable there and in combination with whose peculiarities (see above) exorbitantly improve the cleaning result in a synergetic way. Rather, the explanation based on tooth contours 9, 10 shows that such a shape is also particularly suitable for conventional toothbrushes for cleaning and massaging the marginal gingiva and its neighboring areas on the tooth surface.
  • the density of the bristle holes plays a role, which should be about 25 to 30 holes per cm 2 in order to achieve favorable results.
  • the angle alpha does not say anything about the specific size of the bristle holder 5, which is supposed to be adapted to the average size of the sheets 10.
  • Tests have shown that an edge length 1 or L (cf. FIG. 3) of the order of 5 to 15 mm and in particular 5 to 10 mm corresponds best to the average.
  • L edge length 1 or L (cf. FIG. 3) of the order of 5 to 15 mm and in particular 5 to 10 mm corresponds best to the average.
  • the lower limit of about 5 mm (-10%) is somewhat more critical than the upper limit.
  • the bristle field 112 here also has bristle holes 18 which, together with the other bristle holes, delimit an - at first almost conventional-looking, bristle field of rectangular shape.
  • the difference from the prior art lies in the fact that the bristles of the bristle holes 18 are only very soft, whereas the hard bristles of the bristle holes 7 ', 8' and 15 again, as in FIG. 2, along arches 11, 13 and 16 are arranged.
  • the middle bristle holes 15 can also be viewed as being located on an arc 19 running parallel to the arc 13.
  • FIG. 4 illustrates a top view of a further embodiment variant.
  • the bristles 7, 8 protrude approximately perpendicular to the plane of the bristle holder or the bristle field 12, or that there is no great deviation from the vertical (maximum 10 °).
  • bristles 8 and 15 ' are arranged perpendicular to the plane of the bristle holder 205 or of the bristle field 212, but that the bristles 8''and 7 ′′ are inclined in opposite directions in such a way that their ends lie on an arc 11 ′ or 13 ′, although it would be ascertained when cutting through the bristles that their bristle holes are on or within a Rectangle 20 lie.
  • the bristles 7 ′′ ′′ located at the end of the arch 13 ′ can also be arranged obliquely, as can be seen from FIG. 4, namely opposite to the inclination of the bristles 7 ′′. But this also results in an arc 16 'from a line connecting the ends of the bristles 15' with those of the bristles 7 '''.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Brushes (AREA)

Claims (7)

  1. Brosse à dents avec une poignée et au moins un support de poils relié à celle-ci, lequel support de poils comporte un certain nombre de trous pour poils, trous hors desquels s'étendent les poils (7, 8, 15') d'un champ de poils de la brosse à dents, dont au moins les extrémités libres de deux rangées de poils sont disposées le long respectivement d'un arc (11, 13) bordant le champ de poils (12), lesquels arcs tournent leurs côtés concaves l'un vers l'autre, caractérisée par la fait que les arcs (11, 13) bordant le champ de poils (12), et tournant leurs côtés concaves l'un vers l'autre, ont des rayons (R, r) différents.
  2. Brosse à dents selon la revendication 1, caractérisée par le fait que les arcs de trous pour poils (11, 13, 16) ont un rayon (R ou r) d'au moins 3 mm et au maximum de 10 mm, de préférence au maximum de 8 mm, avantageusement de 5 mm ± 20 %.
  3. Brosse à dents selon l'une des revendications précédentes, caractérisée par le fait qu'entre deux arcs de trous pour poils (11, 13) limitant le champ de poils (12 ; 112) est disposé au moins un autre trou pour poils (15), de préférence une rangée de trous pour poils (15), qui de manière appropriée ou bien est elle-même en forme d'arc ou bien est disposée , avec au moins un trou pour poils (7' ou 8') d'un arc voisin de trous pour poils (11, 13), le long d'un autre arc (16 ou 19) qui possède le cas échéant un rayon ( r ) plus petit qu'un arc (11) parallèle à lui (16), par exemple un rayon plus petit d'environ 10%.
  4. Brosse à dents selon l'une des revendications précédentes, caractérisée par le fait que le champ de poils ( 12; 112; 212) se trouve au moins sensiblement centré sur un axe défini par deux diagonales (17) du support de poils ( 5; 105; 205), lesquelles diagonales (17) forment entre elles un angle (alpha) de 75° à 105°.
  5. Brosse à dents selon l'une des revendications précédentes caractérisée par le fait que les deux diagonales forment entre elles un angle (alpha) de 90° ± 10° et/ou que la longueur d'arête du support de poils (5 ; 105 ; 205) est de 5 mm à 15 mm, en particulier 5 mm à 10 mm.
  6. Brosse à dents selon l'une des revendications précédentes, caractérisée par le fait que le support de poils est fixé à une traverse de liaison (3), en particulier démontable, disposée transversalement par rapport à une poignée (1) (Fig. 1).
  7. Brosse à dents selon l'une des revendications précédentes, caractérisée par le fait que les trous pour poils (7', 8', 15) présentent une densité de 10 à 25, de préférence 15 à 20 trous/cm2.
EP91904375A 1990-02-28 1991-02-26 Brosse a dents Expired - Lifetime EP0516675B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH623/90 1990-02-28
CH62390 1990-02-28
PCT/EP1991/000349 WO1991012748A1 (fr) 1990-02-28 1991-02-26 Brosse a dents

Publications (2)

Publication Number Publication Date
EP0516675A1 EP0516675A1 (fr) 1992-12-09
EP0516675B1 true EP0516675B1 (fr) 1996-10-02

Family

ID=4191318

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91904375A Expired - Lifetime EP0516675B1 (fr) 1990-02-28 1991-02-26 Brosse a dents

Country Status (8)

Country Link
EP (1) EP0516675B1 (fr)
JP (1) JPH05504281A (fr)
AT (1) ATE143573T1 (fr)
CA (1) CA2076645A1 (fr)
DE (1) DE59108245D1 (fr)
DK (1) DK0516675T3 (fr)
ES (1) ES2095933T3 (fr)
WO (1) WO1991012748A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9419778U1 (de) * 1994-12-09 1995-03-09 Brandt, Holger, 65232 Taunusstein Reinigungsgerät für den Mundraum
HRP20041036A2 (en) * 2004-11-03 2006-10-31 Gaberšnik Zdravko Double-sided toothbrush with hinged handle
ES2379170B1 (es) 2011-06-17 2012-12-18 Fernando Miñano Fernández Autolimpiador buco-dental por mascada.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE674288C (de) * 1936-12-05 1939-04-12 Wilhelm Ernst Reeser Zahnbuerste mit dreifachem (U-foermigem) Buerstenkopf mit Borstensaetzen
FR1075171A (fr) * 1952-08-28 1954-10-13 Brosse à dents
DE3378248D1 (en) * 1983-07-05 1988-11-24 Raymond Ernest Modular interproximal toothbrushes

Also Published As

Publication number Publication date
EP0516675A1 (fr) 1992-12-09
ATE143573T1 (de) 1996-10-15
WO1991012748A1 (fr) 1991-09-05
DK0516675T3 (da) 1997-03-03
CA2076645A1 (fr) 1991-08-29
ES2095933T3 (es) 1997-03-01
JPH05504281A (ja) 1993-07-08
DE59108245D1 (de) 1996-11-07

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