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WO1992006671A1 - Procede de detection de la plaque dentaire et ensemble de soins d'hygiene - Google Patents

Procede de detection de la plaque dentaire et ensemble de soins d'hygiene Download PDF

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Publication number
WO1992006671A1
WO1992006671A1 PCT/DE1991/000810 DE9100810W WO9206671A1 WO 1992006671 A1 WO1992006671 A1 WO 1992006671A1 DE 9100810 W DE9100810 W DE 9100810W WO 9206671 A1 WO9206671 A1 WO 9206671A1
Authority
WO
WIPO (PCT)
Prior art keywords
plaque
light
teeth
additive
toothbrush according
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.)
Ceased
Application number
PCT/DE1991/000810
Other languages
German (de)
English (en)
Inventor
Wolfgang Wiedemann
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.)
Individual
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 WO1992006671A1 publication Critical patent/WO1992006671A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q11/00—Preparations for care of the teeth, of the oral cavity or of dentures; Dentifrices, e.g. toothpastes; Mouth rinses
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B15/00—Other brushes; Brushes with additional arrangements
    • A46B15/0002—Arrangements for enhancing monitoring or controlling the brushing process
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B15/00—Other brushes; Brushes with additional arrangements
    • A46B15/0002—Arrangements for enhancing monitoring or controlling the brushing process
    • A46B15/0016—Arrangements for enhancing monitoring or controlling the brushing process with enhancing means
    • A46B15/0036—Arrangements for enhancing monitoring or controlling the brushing process with enhancing means with a lighting means, e.g. laser, bulb
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
    • A61B5/0082—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence adapted for particular medical purposes
    • A61B5/0088—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence adapted for particular medical purposes for oral or dental tissue
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
    • A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
    • A61K2800/42—Colour properties
    • A61K2800/43—Pigments; Dyes
    • A61K2800/434—Luminescent, Fluorescent; Optical brighteners; Photosensitizers

Definitions

  • the invention relates to a method for determining dental plaque and for cleaning teeth, and to a dental care set for carrying out this method.
  • plaque dyes which color the tooth area significantly more than the plaque-free tooth parts.
  • These dyes are conventionally applied to solid substances. bound and often deformed into tablets or dragees to be chewed.
  • the dyes previously used for the purpose of determining plaque all have the disadvantage of staining the existing dental plaque to a greater or lesser extent, on the other hand also the plaque-free teeth and the gums, which naturally creates an optically extremely unfavorable impression. Since these dyeings last a few hours in the case of the dyes used hitherto, it is uncomfortable for the person concerned to show himself in public after carrying out such a plaque test. In these conventional methods, it is also disadvantageous that the plaque test is carried out after tooth cleaning and that tooth plaque which is still present is therefore often not removed by the user for convenience.
  • the invention has set itself the task of developing a method and a device for determining dental plaque which avoids discoloration of the plaque and teeth visible under normal lighting conditions and which is to be carried out at the same time as cleaning the teeth.
  • a toothpaste is first applied to the teeth and distributed there, which contains a food-approved additive which deposits significantly more in the plaque than on plaque-free teeth and that with visible light of a certain wavelength fluoresces and that then the teeth emerge by means of visible light of a wavelength below that of the fluorescent light of the additive, irradiated and optically checked for residues of plaque.
  • the irradiation can take place simultaneously during cleaning.
  • the method according to the invention advantageously ensures a connection between tooth cleaning and checking for plaque. This simplifies plaque control for the user, and is not used as often for convenience.
  • the additive added to the toothpaste has the property of only fluorescing under light of a certain wavelength, so that it is not visible under normal daylight and artificial lighting by means of light of the usual wavelength. Rather, the dental plaque only becomes visible when the teeth are illuminated by light of a certain wavelength that triggers the fluorescence.
  • Substances that are approved for use with food are to be used as additives, since toothpaste is introduced into the oral cavity and partial swallowing cannot be excluded. Visible light is used for the illumination, since ultraviolet light - even in small amounts - has a carcinogenic effect on the oral mucosa.
  • a dental care set which consists of a toothpaste which contains a food-approved additive which deposits significantly more in the plaque than on plaque-free teeth and which fluoresces under visible light of a certain wavelength and a toothbrush the light visible in the area of the brush head has a wavelength below that of the fluorescent light of the additive.
  • This dental care set advantageously provides the means and equipment required to carry out the test and cleaning method according to the invention.
  • a toothbrush is also proposed, in which a light source and / or the energy supply are integrated.
  • the light source be integrated in the handle of the toothbrush and that the bristles at least partially consist of light-conducting fibers which are acted upon by the light source.
  • the - in part - design of the bristles as light guides ensures direct and direct illumination of the teeth to be cleaned.
  • the light-guiding fibers receive the light directly or at a certain spatial distance from the light source, where it is guided by conduction inside the brush. It is conceivable that the light guides are introduced into the carrier plate in the manner of the bristles and only take up the light guided through the handle and head of the brush at the attachment point.
  • the light exit be attached to the front and / or front side of the bristle carrier plate.
  • This arrangement also ensures uniform and direct illumination of the teeth to be cleaned.
  • the toothbrush have a mechanical switch that moves the bristles serving as light guides relative to the bristle carrier plate.
  • the advantage associated with this is that the bristles serving as light guides can be drawn to the bristle carrier plate during tooth cleaning and thus be protected. In addition, this prevents damage to the tooth enamel caused by the light guides, which is important if, for example, glass fibers should be used as the light guide.
  • Light source emits light reflected approximately parallel to the bristles.
  • This arrangement also offers the advantage of simple construction and direct and effective illumination of the teeth. Another advantage is that the bristle head can be easily replaced.
  • the toothbrush contains a sensor for measuring the intensity of the fluorescent light emitted by the additive deposited in the dental plaque and a control device which activates an optical and / or acoustic signal transmitter when the light intensity falls below a predetermined level and / or in the case of electric toothbrushes, the energy supply to the motor is interrupted. This creates a control loop and a fully automatic check for the presence of dental plaque.
  • the sensor measures the fluorescent light emitted by the plaque.
  • the control device - which can consist, for example, of a microprocessor - compares the measured values with a predetermined value and activates an optical and / or acoustic signal generator which indicates to the user that he can stop cleaning the teeth; since there is no more or only a small amount of coating.
  • the energy supply to the motor can also be interrupted instead of the signal.
  • fluorescine and / or hematoxilin be used as an additive.
  • Fluorescine is a dye that fluoresces yellowish. When illuminated with blue light, the fluorescine embedded in the plaque becomes yellowish, while the plaque-free teeth appear blue.
  • Hematoxilin is a natural product of vegetable origin, which is contained in the wood of the South American hematoxilinu cambecianum and in alcohol and
  • Figure 2 shows a toothbrush according to the invention with a handle designed as a light guide
  • FIG 3 shows a toothbrush according to the invention with a sensor and control device
  • the brush head (1) is shown, from which light emerges.
  • this light is emitted by a light source (2) which draws its energy from the energy supply (3), the exemplary embodiment shown in the drawing consisting of a conventional dry cell battery.
  • the light emitted by the light source (2) is guided through the handle (4) by means of the light-conducting fibers (6) to the brush head or the bristle carrier plate (8).
  • the bristles (5) partially represent a continuation of the light-guiding fibers (6).
  • the mechanical switch (9) which presses the bristles (5) serving as light guides (6) partially into the bristle carrier plate (8). can withdraw.
  • FIG. 2 shows a toothbrush according to the invention consisting of handle (4), brush head (1), bristle carrier plate (8), light source (2) and energy supply unit (3). It is essential here that light exits (7) are located on the rear and front side of the bristle head. Part of the light is also reflected here by the mirror (10) approximately parallel to the bristles (5).
  • FIG. 3 shows a toothbrush according to the invention consisting of a handle (4), bristle head (1), bristle carrier plate (8), light source (2), energy supply (3) and bristles (5).
  • the special feature here is the presence of the sensor (11), which measures the intensity of the fluorescent light. This measured intensity is usually a device (12) compared with a predetermined value, this control device emitting a signal when this predetermined intensity value is undershot

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Physics & Mathematics (AREA)
  • Epidemiology (AREA)
  • Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Dentistry (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Birds (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Brushes (AREA)

Abstract

Selon un procédé de détection de la plaque dentaire, on applique et on répartit premièrement sur les dents une pâte dentifrice qui contient un additif admissible pour denrées alimentaires ayant la propriété de se déposer de manière considérablement plus concentrée sur la plaque que sur les dents dépourvus de plaque. Cet additif a en outre une capacité de fluorescence sous une lumière visible ayant une longueur d'onde déterminée. Ensuite, les dents sont éclairées au moyen d'une brosse à dents spéciale qui contient une source de lumière (2). Cette brosse à dents se caractérise par le fait que de la lumière visible ayant une longueur d'onde inférieure à celle de la lumière fluorescente de l'additif sort par la région de la tête (1) de la brosse. On associe ainsi le nettoyage des dents et le contrôle optique de la plaque dentaire.
PCT/DE1991/000810 1990-10-16 1991-10-16 Procede de detection de la plaque dentaire et ensemble de soins d'hygiene Ceased WO1992006671A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19904032779 DE4032779C2 (de) 1990-10-16 1990-10-16 Zahnbürste zur Feststellung von Zahnbelag
DEP4032779.5 1990-10-16

Publications (1)

Publication Number Publication Date
WO1992006671A1 true WO1992006671A1 (fr) 1992-04-30

Family

ID=6416372

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1991/000810 Ceased WO1992006671A1 (fr) 1990-10-16 1991-10-16 Procede de detection de la plaque dentaire et ensemble de soins d'hygiene

Country Status (2)

Country Link
DE (1) DE4032779C2 (fr)
WO (1) WO1992006671A1 (fr)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0593375A1 (fr) * 1992-10-15 1994-04-20 LASER MEDICAL TECHNOLOGY, Inc. Dispositif d'hygiène dentaire
WO1997001298A1 (fr) * 1995-06-28 1997-01-16 Philips Electronics N.V. Brosse a dents electrique munie de moyens pour localiser une plaque dentaire
WO1997029714A1 (fr) * 1996-02-16 1997-08-21 Smithkline Beecham Consumer Healthcare Gmbh Brosse a dents
WO1998027891A1 (fr) * 1996-12-23 1998-07-02 Karl Massholder Systeme de nettoyage et procede pour le nettoyage d'une surface
WO1999059462A1 (fr) * 1998-05-16 1999-11-25 Helmut Hund Gmbh Brosse a dents pourvue d'un dispositif a fluorescence pour localiser la plaque dentaire
WO2000007482A1 (fr) 1998-08-05 2000-02-17 Smithkline Beecham Gmbh & Co. Kg Brosse a dents
US6616451B1 (en) * 1997-06-20 2003-09-09 Biolase Technology, Inc. Electromagnetic radiation emitting toothbrush and dentifrice system
WO2006028099A1 (fr) 2004-09-10 2006-03-16 Lion Corporation Système de détection de plaque dentaire et procédé de détection de plaque dentaire
US7270543B2 (en) 2004-06-29 2007-09-18 Therametric Technologies, Inc. Handpiece for caries detection
US7467946B2 (en) 2005-05-18 2008-12-23 Biolase Technology, Inc. Electromagnetic radiation emitting toothbrush and dentifrice system
US7845039B2 (en) 2003-09-09 2010-12-07 The Procter & Gamble Company Toothbrush with severable electrical connections
WO2012005891A1 (fr) 2010-06-29 2012-01-12 Mcneil-Ppc, Inc. Procédé de nettoyage de la cavité buccale
US8186997B2 (en) 2010-06-29 2012-05-29 Mcneil-Ppc, Inc. Method for cleaning the oral cavity
US8241035B2 (en) 2005-05-25 2012-08-14 Biolase, Inc. Device having activated textured surfaces for treating oral tissue
AU2012200622B2 (en) * 2005-11-14 2012-10-11 Colgate-Palmolive Company Light-emitting oral care implement
US8314377B2 (en) 2009-12-23 2012-11-20 Mcneil-Ppc, Inc. Device and method for detecting plaque in the oral cavity
US8360771B2 (en) 2006-12-28 2013-01-29 Therametric Technologies, Inc. Handpiece for detection of dental demineralization
US8429783B2 (en) 2005-11-14 2013-04-30 Colgate-Palmolive Company Light-emitting oral care implement
US8512040B2 (en) 2010-06-29 2013-08-20 Mcneil-Ppc, Inc. Device and method for cleaning the oral cavity
US9566225B2 (en) 2006-11-13 2017-02-14 The Procter & Gamble Company Products and methods for disclosing conditions in the oral cavity

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19545644C1 (de) * 1995-12-07 1997-04-17 Braun Ag Zahnbürste und Verfahren zur Sichtbarmachung von Zahnbelag und Verfahren zur Herstellung einer Zahnbürste
IT1296089B1 (it) * 1997-11-10 1999-06-09 Mectron Di Bianchetti Fernando Manipolo odontoiatrico con sorgente luminosa a scopo diagnostico
IL140180A0 (en) * 2000-12-07 2002-12-01 Advanced oxidation of dangerous chemical and biological sources
US7813787B2 (en) 2002-07-31 2010-10-12 Inspektor Research Systems Bv Dental implement and method for tooth surface inspection
DE10245086A1 (de) 2002-09-27 2004-04-08 Trisa Holding Ag Verfahren zur Herstellung einer Zahnbürste
CA2600855C (fr) * 2005-03-09 2011-11-22 The Procter & Gamble Company Brosses a dents electriques reactives a des capteurs et procedes pour les utiliser
DE102006025596A1 (de) * 2006-06-01 2007-12-06 Birgit Kalk Zahnbürste
CN102065752A (zh) 2008-05-02 2011-05-18 宝洁公司 用于显示口腔中的病症的产品及方法
PL3442397T3 (pl) 2016-04-13 2021-11-08 Inspektor Research Systems B.V. Dwuczęstotliwościowe badanie stomatologiczne
US20220125565A1 (en) * 2019-03-08 2022-04-28 Koninklijke Philips N.V. Fiber-based light ring for oral care appliance
US20210290070A1 (en) * 2020-03-19 2021-09-23 International Business Machines Corporation Smart toothbrush that tracks and removes dental plaque

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3309274A (en) * 1962-07-23 1967-03-14 Brilliant Herbert Use of fluorescent dyes in dental diagnostic methods
US3667454A (en) * 1970-06-12 1972-06-06 Larry W Prince Toothbrush with ultraviolet emitter
US4517172A (en) * 1983-12-29 1985-05-14 Vipont Laboratories, Inc. Plaque disclosing agent
US4779173A (en) * 1986-12-24 1988-10-18 Carr Charlie O Illuminated brush device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8200876U1 (de) * 1981-01-22 1982-07-01 Les Produits Associés LPA S.A., 1225 Chêne-Bourg Handgerät zur Zahn- und Mundpflege
DE3345465A1 (de) * 1983-12-15 1985-06-27 Siemens AG, 1000 Berlin und 8000 München Zahnaerztliches diagnosegeraet

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3309274A (en) * 1962-07-23 1967-03-14 Brilliant Herbert Use of fluorescent dyes in dental diagnostic methods
US3667454A (en) * 1970-06-12 1972-06-06 Larry W Prince Toothbrush with ultraviolet emitter
US4517172A (en) * 1983-12-29 1985-05-14 Vipont Laboratories, Inc. Plaque disclosing agent
US4779173A (en) * 1986-12-24 1988-10-18 Carr Charlie O Illuminated brush device

Cited By (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0593375A1 (fr) * 1992-10-15 1994-04-20 LASER MEDICAL TECHNOLOGY, Inc. Dispositif d'hygiène dentaire
WO1997001298A1 (fr) * 1995-06-28 1997-01-16 Philips Electronics N.V. Brosse a dents electrique munie de moyens pour localiser une plaque dentaire
JP2000504605A (ja) * 1996-02-16 2000-04-18 スミスクライン・ビーチャム・コンシューマー・ヘルスケア・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング 歯ブラシ
WO1997029714A1 (fr) * 1996-02-16 1997-08-21 Smithkline Beecham Consumer Healthcare Gmbh Brosse a dents
WO1998027891A1 (fr) * 1996-12-23 1998-07-02 Karl Massholder Systeme de nettoyage et procede pour le nettoyage d'une surface
US6343400B1 (en) 1996-12-23 2002-02-05 Karl Massholder Cleaning system using ultraviolet radiation and photoactivatable semiconductor material
US6616451B1 (en) * 1997-06-20 2003-09-09 Biolase Technology, Inc. Electromagnetic radiation emitting toothbrush and dentifrice system
US7261558B2 (en) * 1997-06-20 2007-08-28 Biolase Technology, Inc. Electromagnetic radiation emitting toothbrush and dentifrice system
WO1999059462A1 (fr) * 1998-05-16 1999-11-25 Helmut Hund Gmbh Brosse a dents pourvue d'un dispositif a fluorescence pour localiser la plaque dentaire
JP2002515276A (ja) * 1998-05-16 2002-05-28 ヘルムート・フント・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング 歯垢を位置決定するための蛍光手段を備えた歯ブラシ
AU750410B2 (en) * 1998-05-16 2002-07-18 Helmut Hund Gmbh Toothbrush with fluorescence means for locating dental plaque
US6485300B1 (en) 1998-05-16 2002-11-26 Helmut Hund Gmbh Toothbrush with fluorescence means for locating dental plaque
WO2000007482A1 (fr) 1998-08-05 2000-02-17 Smithkline Beecham Gmbh & Co. Kg Brosse a dents
US6862771B1 (en) 1998-08-05 2005-03-08 Smithkline Beecham Gmbh & Co. Kg Toothbrush head with means to direct and collect radiation
US7845039B2 (en) 2003-09-09 2010-12-07 The Procter & Gamble Company Toothbrush with severable electrical connections
US7270543B2 (en) 2004-06-29 2007-09-18 Therametric Technologies, Inc. Handpiece for caries detection
US8110178B2 (en) 2004-09-10 2012-02-07 Lion Corporation Dental-plaque detection system and dental-plaque detection method
WO2006028099A1 (fr) 2004-09-10 2006-03-16 Lion Corporation Système de détection de plaque dentaire et procédé de détection de plaque dentaire
EP1792581A4 (fr) * 2004-09-10 2008-09-17 Lion Corp Système de détection de plaque dentaire et procédé de détection de plaque dentaire
US7942667B2 (en) 2005-05-18 2011-05-17 Biolase Technology, Inc. Electromagnetic radiation emitting toothbrush and dentifrice system
US7467946B2 (en) 2005-05-18 2008-12-23 Biolase Technology, Inc. Electromagnetic radiation emitting toothbrush and dentifrice system
US8241035B2 (en) 2005-05-25 2012-08-14 Biolase, Inc. Device having activated textured surfaces for treating oral tissue
US8429783B2 (en) 2005-11-14 2013-04-30 Colgate-Palmolive Company Light-emitting oral care implement
US8984699B2 (en) 2005-11-14 2015-03-24 Colgate-Palmolive Company Light-emitting oral care implement
US10820686B2 (en) 2005-11-14 2020-11-03 Colgate-Palmolive Company Light-emitting oral care implement
AU2012200622B2 (en) * 2005-11-14 2012-10-11 Colgate-Palmolive Company Light-emitting oral care implement
EP2081542B2 (fr) † 2006-11-13 2017-09-13 The Procter and Gamble Company Produits et procédés pour révéler des conditions dans la cavité buccale
US9566225B2 (en) 2006-11-13 2017-02-14 The Procter & Gamble Company Products and methods for disclosing conditions in the oral cavity
US8360771B2 (en) 2006-12-28 2013-01-29 Therametric Technologies, Inc. Handpiece for detection of dental demineralization
US8314377B2 (en) 2009-12-23 2012-11-20 Mcneil-Ppc, Inc. Device and method for detecting plaque in the oral cavity
WO2012005891A1 (fr) 2010-06-29 2012-01-12 Mcneil-Ppc, Inc. Procédé de nettoyage de la cavité buccale
US8702422B2 (en) 2010-06-29 2014-04-22 Mcneil-Ppc, Inc. Device and method for cleaning the oral cavity
EP2588000A4 (fr) * 2010-06-29 2016-01-20 Mcneil Ppc Inc Procédé de nettoyage de la cavité buccale
US8512040B2 (en) 2010-06-29 2013-08-20 Mcneil-Ppc, Inc. Device and method for cleaning the oral cavity
US8187002B2 (en) 2010-06-29 2012-05-29 Mcneil-Ppc, Inc. Method for cleaning the oral cavity
US8186997B2 (en) 2010-06-29 2012-05-29 Mcneil-Ppc, Inc. Method for cleaning the oral cavity

Also Published As

Publication number Publication date
DE4032779C2 (de) 2000-10-26
DE4032779A1 (de) 1992-04-23

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