EP0221000B1 - Orthodontic toothbrush - Google Patents

Orthodontic toothbrush Download PDF

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Publication number
EP0221000B1
EP0221000B1 EP86460018A EP86460018A EP0221000B1 EP 0221000 B1 EP0221000 B1 EP 0221000B1 EP 86460018 A EP86460018 A EP 86460018A EP 86460018 A EP86460018 A EP 86460018A EP 0221000 B1 EP0221000 B1 EP 0221000B1
Authority
EP
European Patent Office
Prior art keywords
tufts
characterized
bristles
lateral
head
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
Application number
EP86460018A
Other languages
German (de)
French (fr)
Other versions
EP0221000A1 (en
Inventor
Yvon Marcel Nicolas
Original Assignee
Yvon Marcel Nicolas
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
Priority to FR8514161A priority Critical patent/FR2587603B1/en
Priority to FR8514161 priority
Application filed by Yvon Marcel Nicolas filed Critical Yvon Marcel Nicolas
Publication of EP0221000A1 publication Critical patent/EP0221000A1/en
Application granted granted Critical
Publication of EP0221000B1 publication Critical patent/EP0221000B1/en
Expired legal-status Critical Current

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Classifications

    • AHUMAN NECESSITIES
    • A46BRUSHWARE
    • A46BBRUSHES
    • A46B15/00Other brushes; Brushes with additional arrangements
    • A46B15/0055Brushes combined with other articles normally separate from the brushing process, e.g. combs, razors, mirrors
    • A46B15/0069Brushes fitted with a interdental devices, e.g. toothpick
    • AHUMAN NECESSITIES
    • A46BRUSHWARE
    • A46BBRUSHES
    • A46B15/00Other brushes; Brushes with additional arrangements
    • A46B15/0055Brushes combined with other articles normally separate from the brushing process, e.g. combs, razors, mirrors
    • AHUMAN NECESSITIES
    • A46BRUSHWARE
    • A46BBRUSHES
    • A46B9/00Arrangements of the bristles in the brush body
    • A46B9/02Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups
    • A46B9/04Arranged like in or for toothbrushes
    • AHUMAN NECESSITIES
    • A46BRUSHWARE
    • A46BBRUSHES
    • A46B2200/00Brushes characterized by their functions, uses or applications
    • A46B2200/10For human or animal care
    • A46B2200/1066Toothbrush for cleaning the teeth or dentures
    • AHUMAN NECESSITIES
    • A46BRUSHWARE
    • A46BBRUSHES
    • A46B2200/00Brushes characterized by their functions, uses or applications
    • A46B2200/10For human or animal care
    • A46B2200/1066Toothbrush for cleaning the teeth or dentures
    • A46B2200/1073Denture toothbrush, i.e. used for dentures specifically

Description

  • The present invention relates to the field of toothbrushes.
  • The present invention relates more specifically to an orthodontic toothbrush intended to be used in particular by children wearing rectifier locks.
  • It is known that the techniques known as orthodontics and dentofacial orthopedics which use fixed therapies, aimed at correcting the deformations of the teeth, are now frequently used in children.
  • These fixed therapies call on anchoring means, which will be designated here by the term of straightening locks, fixed on the teeth, and on arcs, generally metallic, which pass through the locks and are adapted to move the teeth. .
  • The abovementioned anchoring means can either be bonded directly to the teeth (more precisely on the dental crowns), or made integral with rings fixed to the teeth.
  • All these additions to the teeth make it, in practice, the bacterial plaque responsible for cavities more difficult to remove.
  • Contrary to an idea sometimes developed, it is not the rings or the straightening locks that cause tooth decay. These result only from the difficulty of brushing teeth during orthodontic treatments, due to the presence of straightening latches and arches.
  • Although many types of toothbrushes have already been proposed, none of the brushes available to date on the market has solved the problem thus posed.
  • Practitioners have attempted to limit the development of dental caries in children with rectifier locks by advising these children to use, in addition to the usual brush, dental jets which spray water under pressure onto and between the teeth.
  • However, these dental jets, if they evacuate the large food debris left between the teeth, do not make it possible to remove the bacterial plaque which cannot be removed by brushing and which is, as indicated previously, responsible for the appearance of dental caries .
  • We already know, moreover, from patent US-3 978 852, an electromechanical (vibrating) toothbrush whose head carries tufts of pointed bristles, adapted to be housed in the interdental interstices as well as, where appropriate, under the arcs of the rectifier locks. The brushing of the spaces accessible to the tufts is obtained by a back and forth movement of the brushing head in a direction parallel to the bristles. Such an arrangement cannot therefore be used for a manual toothbrush, the brushing movement of which takes place in a direction substantially perpendicular to the bristles.
  • Also known, from patent FR-830 801, is a toothbrush which has a brushing head provided with several rows of bristle tufts - or latches - some of which are inclined outwards and others inwards. ; this particular arrangement, the aim of which is to improve the effectiveness of cleaning and to avoid injury to the gums, is in no way adapted to facilitate brushing of the teeth in the presence of straightening latches, or to allow the brushing of these latches themselves.
  • The present invention now improves the situation by proposing an orthodontic toothbrush, characterized by a brushing head comprising on the one hand two lateral and longitudinal groups of bristle tufts which each comprise tufts inclined towards the outside of the head. brushing by diverging from a longitudinal median plane of the head, and tufts converging towards this longitudinal median plane, on the other hand at least one longitudinal central row of tufts of hair of shorter length, parallel to the longitudinal median plane.
  • Such a toothbrush allows in particular, without imposing a specific brushing movement and this is important insofar as young children frequently wear straightening latches, to reach and brush correctly the collar of the teeth, the junction of rings or bases of the toothpicks and the area of the interdental papilla, which are the most difficult areas to clean using conventional brushes and therefore the areas most prone to cavities.
  • According to another important characteristic of the present invention, the difference in length between the bristles of the lateral groups and the bristles of the central row substantially equal the thickness of the straightening locks, and preferably is of the order of 2 mm.
  • Preferably according to the invention, the axes of all the tufts are contained in transverse planes perpendicular to said longitudinal median plane and to the average surface of the head carrying the tufts.
  • According to a preferred embodiment of the present invention, each lateral group of tufts comprises two longitudinal rows of tufts which diverge and converge respectively with respect to the longitudinal median plane of the brushing head.
  • Furthermore, according to the present invention, the end of the handle opposite to the brushing head is advantageously adapted to removably support accessories for dental hygiene, in particular accessories such as interdental brushes or bristle holders. dental.
  • Other characteristics and advantages of the present invention will appear on reading the detailed description which follows and with reference to the appended drawings given by way of nonlimiting example, and in which:
    • Figure 1 shows a schematic view in plan of a toothbrush in accordance with the present invention,
    • FIG. 2 represents a side view of the same toothbrush, according to a view illustrated by the arrow referenced II in FIG. 1,
    • FIGS. 3 and 4 represent schematic views of the brushing head of the same toothbrush, according to transverse sectional planes referenced III-III and IV-IV respectively in FIGS. 1 and 2,
    • FIGS. 5 and 6 represent two accessories (brush and silk thread holder respectively) capable of being fixed on the end of the handle opposite to the brushing head,
    • FIG. 7 schematically illustrates the brushing operation of a tooth fitted with a straightening lock, using a toothbrush according to the present invention,
    • FIG. 8 schematically illustrates the brushing operation using a brush placed at the end of the handle of the brush opposite the brush head.
  • In Figures 7 and 8, there is shown a plurality of rectifier locks V fixed on the dental crowns C and associated with metal arches A.
  • The toothbrush 10, in accordance with the present invention, comprises, in a conventional manner per se, a handle 20 and a brushing head 30.
  • As illustrated in FIG. 2, the handle 20 is preferably non-rectilinear to facilitate access to the various surfaces of the dental crowns and to facilitate brushing operations.
  • Schematically illustrated is a handle 20 comprising a straight gripping portion 21 extended by a portion 22 also straight but inclined relative to the aforementioned portion 21 and which carries the brushing head 30 at its free end.
  • The illustration of Figures 1 and 2 should not however be considered as limiting.
  • The different portions 21, 22 of the handle are advantageously symmetrical with respect to a longitudinal median plane of the brush referenced P-P in the figures.
  • This longitudinal median plane P is perpendicular to the plane of FIG. 1 and parallel to the plane of FIG. 2.
  • According to the present invention, the brushing head 30 comprises on the one hand two lateral and longitudinal groups of tufts of flexible bristles 31, 35 which each include tufts inclined towards the outside of the brushing head while diverging from the median plane longitudinal P and tufts converging towards this longitudinal median plane P, on the other hand at least one longitudinal central row 40 of tufts of shorter length hairs parallel to the longitudinal median plane P.
  • More precisely still, according to the embodiment illustrated in the appended figures, the brushing head 30 comprises a longitudinal central row 40 of tufts framed on either side by lateral and longitudinal groups of tufts 31, 35 each distributed over two longitudinal rows, referenced 32, 33 for group 31, and referenced 36, 37 for group 35.
  • The tufts placed on the rows 33, 37 converge towards the longitudinal median plane P while the tufts placed on the rows 32, 36 diverge from the longitudinal median plane P, this in the direction of their free edge.
  • The axes of all the tufts are preferably included in transverse planes (such as the section planes III-III and IV-IV) which extend perpendicular to the longitudinal median plane P and to the mean plane of the surface 39 of the head carrying the hairs.
  • Of course, this surface 39 can itself be slightly rounded.
  • According to an embodiment in accordance with the present invention, nonlimiting, and given by way of example:
    • the brushing head 30 has a width I of the order of 12 mm,
    • the brushing head 30 has a thickness e of the order of 5 mm,
    • the implantation surface of the bristles on the brushing head substantially equals the brushing surface,
    • the length of the brushing head is of the order of 20 mm,
    • the brushing head 30 comprises a central row 40 of tufts of bristles which extend perpendicularly to the support surface 39 of the head, have a length of the order of 8 mm and have their axes coincident with the longitudinal median plane P,
    • the brushing head 30 further comprises on either side of the central row 40 of the lateral rows 32, 36 of tufts which diverge away from the longitudinal median plane P and are inclined relative to the latter by an angle x of the order of 10 °, these bristles having a length of 10 mm,
    • the brushing head 30 finally comprises two external lateral rows 33, 37 of tufts which converge towards the longitudinal median plane P and are inclined at an angle y of 10 ° relative to the latter, these bristles also having a length of 10 mm,
    • the interaxial distance between the central row 40 and the lateral rows 32, 36 is of the order of 2.5 mm,
    • the interaxial distance between the lateral rows 32, 33; 36, 37 is of the order of 1.5 mm,
    • each tuft of bristles is made up of approximately 45 flexible bristles and has the shape of a cylinder whose diameter is of the order of 1.5 mm.
  • It will be noted that the tufts of the lateral rows 32, 33; 36, 37 are staggered, that is to say offset longitudinally from one row to another to be able to cross due to their inclination, as illustrated in the figures.
  • As illustrated in FIG. 7, the lateral rows of converging tufts 33, 37 make it possible to clean the base junction of the tooth locks or edges of the tooth rings. Between the teeth, these hairs of rows 33 and 37 slide under the arches A and allow cleaning the proximal faces of the teeth.
  • Similarly, the lateral rows of divergent tufts 32, 36 brush the free edge of the teeth and the collar, the axis of these tufts being such that their bristles can pass under the gum.
  • The tufts 40 brush the latches V and the arches A.
  • As illustrated on the bottom of FIGS. 1 and 2, as well as on FIGS. 5, 6 and 8, the end 23 of the handle opposite the brush head 30 is preferably adapted to removably support accessories 60, 70 to complete the cleaning.
  • The accessories 60, 70 will be removably attached to the end 23 of the handle using any suitable conventional means such as snap-on or bayonet means.
  • According to the embodiment shown in the figures, the end 23 of the handle comprises a through hole 50, formed by a central cylindrical bore 51 into which open two grooves 52, 53 of rectangular cross section, diametrically opposite.
  • Furthermore, each of the accessories 60, 70 comprises a base 61, 71 which comprises a cylindrical rod 62, 72 complementary to the bore 51, and which carries at its free end a transverse bar 53, 73 complementary to the grooves 52, 53.
  • Those skilled in the art will easily understand that to fix the accessories 60, 70 on the handle of the toothbrush 10, the bars 63, 73 must be aligned on the grooves 52, 53, then engage the bars 63, 73 and the rods 62, 72 in the slots 50, then rotate the bases 61, 71 by a quarter turn, around the axis 64, 74 of the rods when the bars 63, 73 have passed through the slots.
  • This pivoting can be limited by stops provided in relief on the handle 20.
  • The length of the rods 62, 72 is preferably substantially identical, or even less than the thickness m of the handle 20, to obtain an immobilization of the accessories 60, 70 on the latter after the abovementioned pivoting.
  • To facilitate this pivoting while guaranteeing a firm immobilization of the accessories 60, 70, it is also possible to envisage making elastic bosses on the handle 21 intended to penetrate into bends made on the bars 63, 73 or the bases 61, 71, or conversely to produce elastic bosses on the bars 63, 73 or the bases 61, 71 intended to penetrate into bends made on the sleeves 21.
  • There is shown in Figure 5, an interdental brush 60 comprising a brush 65 carried by the base 61 above.
  • This brush 65 preferably has a generally frustoconical shape tapered towards its free end. However, a generally cylindrical brush can be used.
  • By way of nonlimiting example, the brush 65 can be composed, in a conventional manner per se, of two central twisted metal wires which wedge the bristles of the brush. The active length of the brush is for example 12 mm.
  • This brush 65 is, in particular, adapted to pass under the arches A, between the teeth, as illustrated in FIG. 8 to eliminate the bacterial plaque which is fixed at these places, by vertical movement, schematically illustrated M.
  • This brush 65 also makes it possible to brush the proximal faces of the teeth, in particular when the teeth are spaced apart, or after extractions.
  • FIG. 7 shows a dental floss holder 70.
  • This includes a base 71 in a general U shape.
  • More specifically, the core 75 of the base carries two parallel wings 76, 77 split at their free ends to receive under tension a silk thread 78.
  • This silk thread 78 may be immobilized on the base 71 using any suitable conventional means, for example by simple winding on the ends of the wings 76, 77 which, thanks to their elasticity, keep the thread 78 under tension.
  • This wire 78 is intended to be passed between the teeth in the areas without arc A.

Claims (10)

1. Orthodontic toothbrush, particularly for children wearing regulating pins, characterized by a brushing head (30) comprising on the one hand two lateral and longitudinal groups of tufts of bristles (31, 35), each group possessing tufts (32, 36) inclined towards the outside of the brushing head and diverging relative to a median longitudinal plane (P) of the head, and tufts (33, 37) converging towards this median longitudinal plane (P), and on the other hand at least one central longitudinal row of shorter tufts (40) parallel to the median longitudinal plane (P).
2. Toothbrush according to claim 1, characterized in that the difference in length between the bristles of the lateral groups (31, 35) and the bristles of the central row (40) is substantially equal to the thickness of the regulating pins (V).
3. Toothbrush according to one of claims 1 or 2 characterized in that the difference in length between the bristles of the lateral groups (31, 35) and the bristles of the central row (40) is of the order of 2 mm.
4. Toothbrush according to one of claims 1 to 3 characterized in that the axes of all the tufts (32, 36, 33, 37, 40) are contained within transverse planes perpendicular to the said median longitudinal plane (P) and to the mean plane of the surface (39) of the head bearing the tufts.
5. Toothbrush according to one of claims 1 to 4 characterized in that each lateral group of tufts (31, 35) comprises two longitudinal rows of tufts (32, 33 ; 36, 37) which diverge and converge respectively relative to the median longitudinal plane (P) of the brushing head.
6. Toothbrush according to one of claims 1 to 5 characterized in that the inclination (x, y) of the tufts of the lateral groups (31, 35) relative to the median longitudinal plane (P) is between 5° and 30° and preferably of the order of 10°.
7. Toothbrush according to one of claims 1 to 6 characterized in that the end (23) of the handle (20) opposite to the brushing head (30) is designed to carry, in a removable fashion, accessories (50, 60) for dental hygiene.
8. Toothbrush according to claim 7, characterized in that the end (23) of the handle (20) opposite to the brushing head (30) is designed to carry, in a removable fashion, an interdental brush (60).
9. Toothbrush according to claim 7, characterized in that the end (23) of the handle (20) opposite to the brushing head (30) is designed to carry, in a removable fashion, a support for dental floss (70).
10. Orthodontic toothbrush, in particular for children wearing regulating pins, according to one of claims 1 to 9, characterized by a brushing head (30) possessing, first, two lateral and longitudinal groups of tufts of bristles (31, 35), each group being formed of two longitudinal rows of tufts (32, 36 ; 33, 37) which diverge and converge respectively relative to the median longitudinal plane (P) of the brushing head, the tufts of these lateral rows being implanted in staggered lines to intersect, and secondly a central longitudinal row of tufts of shorter bristles (40) parallel to the median longitudinal plane (P).
EP86460018A 1985-09-23 1986-09-18 Orthodontic toothbrush Expired EP0221000B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR8514161A FR2587603B1 (en) 1985-09-23 1985-09-23 Orthodontic toothbrush
FR8514161 1985-09-23

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT86460018T AT45865T (en) 1985-09-23 1986-09-18 Orthodontic toothbrush.

Publications (2)

Publication Number Publication Date
EP0221000A1 EP0221000A1 (en) 1987-05-06
EP0221000B1 true EP0221000B1 (en) 1989-08-30

Family

ID=9323212

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86460018A Expired EP0221000B1 (en) 1985-09-23 1986-09-18 Orthodontic toothbrush

Country Status (5)

Country Link
US (1) US4706322A (en)
EP (1) EP0221000B1 (en)
AT (1) AT45865T (en)
DE (1) DE3665253D1 (en)
FR (1) FR2587603B1 (en)

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US9095205B2 (en) * 2011-06-21 2015-08-04 Joseph A. Stofko Orthodontic toothbrush
US8561248B2 (en) 2011-08-25 2013-10-22 King Saud University Flexible, ergonomic toothbrush with replaceable bristles
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EP3046442A4 (en) * 2013-09-18 2017-05-24 Dr. Fresh, LLC Toothbrush with angled bristles
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Also Published As

Publication number Publication date
FR2587603A1 (en) 1987-03-27
FR2587603B1 (en) 1991-02-01
US4706322A (en) 1987-11-17
DE3665253D1 (en) 1989-10-05
EP0221000A1 (en) 1987-05-06
AT45865T (en) 1989-09-15

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