WO2019045978A1 - Compositions et méthodes d'hygiène buccale - Google Patents

Compositions et méthodes d'hygiène buccale Download PDF

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Publication number
WO2019045978A1
WO2019045978A1 PCT/US2018/045782 US2018045782W WO2019045978A1 WO 2019045978 A1 WO2019045978 A1 WO 2019045978A1 US 2018045782 W US2018045782 W US 2018045782W WO 2019045978 A1 WO2019045978 A1 WO 2019045978A1
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Prior art keywords
whitening
oil
oral care
teeth
present
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PCT/US2018/045782
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English (en)
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WO2019045978A8 (fr
Inventor
Kourosh MADDAHI
Hessam Nowzari
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Mge Holdings Llc
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Priority claimed from US15/850,655 external-priority patent/US10813877B2/en
Application filed by Mge Holdings Llc filed Critical Mge Holdings Llc
Priority to EP18852000.1A priority Critical patent/EP3737351A4/fr
Publication of WO2019045978A1 publication Critical patent/WO2019045978A1/fr
Publication of WO2019045978A8 publication Critical patent/WO2019045978A8/fr

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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/96Cosmetics or similar toiletry preparations characterised by the composition containing materials, or derivatives thereof of undetermined constitution
    • A61K8/965Cosmetics or similar toiletry preparations characterised by the composition containing materials, or derivatives thereof of undetermined constitution of inanimate origin
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/19Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
    • A61K8/25Silicon; Compounds thereof
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/92Oils, fats or waxes; Derivatives thereof, e.g. hydrogenation products thereof
    • A61K8/922Oils, fats or waxes; Derivatives thereof, e.g. hydrogenation products thereof of vegetable origin
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/96Cosmetics or similar toiletry preparations characterised by the composition containing materials, or derivatives thereof of undetermined constitution
    • A61K8/97Cosmetics or similar toiletry preparations characterised by the composition containing materials, or derivatives thereof of undetermined constitution from algae, fungi, lichens or plants; from derivatives thereof
    • A61K8/9783Angiosperms [Magnoliophyta]
    • A61K8/9794Liliopsida [monocotyledons]
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61QSPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q11/00Preparations for care of the teeth, of the oral cavity or of dentures; Dentifrices, e.g. toothpastes; Mouth rinses
    • A61Q11/02Preparations for deodorising, bleaching or disinfecting dentures
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2800/00Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
    • A61K2800/40Chemical, physico-chemical or functional or structural properties of particular ingredients
    • A61K2800/48Thickener, Thickening system

Definitions

  • the present invention relates to compositions and methods for improving the appearance and health of teeth and gums with oral care products containing naturally-derived ingredients.
  • Dead Sea salts have been reported in the scientific literature, typically in connection with diseases of the skin and joints. See, e.g., Uriel Katz et al., "Scientific Evidence of the Therapeutic Effects of Dead Sea Treatments: A Systematic Review," Seminars in Arthritis and Rheumatism, Vol. 42, No. 2 (October 2012), pp.186-200, citing Z. Even-Paz, J. Shani, "The dead sea and psoriasis: Historical and geographic background," I nt J Dermatol, Vo. 28, No. 1 (1989), pp. 1-9 (345 g of mineral per liter (34.5% or 34.5 g/100 ml_); Id. citing S.
  • the water of the Dead Sea contains concentrated salts other than NaCI - including, but not limited to, MgC , CaC , KG, and MgBr2.
  • the separate ions present in the Dead Sea water are chloride (212.4 g/l), magnesium (40.65 g/l), sodium (39.15 g/l), calcium (16.86 g/l), potassium (7.26 g/l), bromide (5.12 g/l), sulfate (0.47 g/l), and bicarbonate (0.22 g/l). See, e.g., I.L. Schamberg, "Treatment of psoriasis at the Dead Sea," Int J Dermatol, Vol. 17, No. 6 (1978), pp. 524-525; Paz and Shani, supra.
  • European Patent Application EP1074245A2 discloses use of mineral salt, in particular Dead Sea salts, as an active ingredient in a mouthwash to "assist in combatting bacteria and gum irritation and inflammation".
  • Essential oils have been used for the treatment of a variety of ailments since ancient times. The safety and efficacy of essential oils in dentistry have been reported in numerous clinical studies. See, e.g., Namrata Dagli et al., "Essential oils, their therapeutic properties, and implication in dentistry: A Review" J Int Soc Prev
  • Enamel is a quasi-translucent structure which allows the underlying dentin color to show through. Color of teeth (as perceived by others) is determined by the transparency of the enamel, the color tone of the underlying dentin and any imbedded staining contained between the dentin and the enamel surface. It is also associated with the light scattering and absorption properties of the enamel and dentin.
  • Tooth discoloration is a multifactorial condition influenced by oral hygiene, diet (foods and beverages that are acidic and/or contain tannins and other chromogenic materials), tobacco usage, and aging. Extrinsic stains appear on the pellicle, the layer of adsorbed salivary proteins and other macromolecules on the dental enamel surface. These stains can be reduced, and future staining can be prevented, through brushing, rinsing and flossing.
  • Intrinsic staining is caused by long-term accumulation of chromogens within the enamel. Intrinsic staining is typically addressed through professional bleaching procedures (either in-office or at-home). These procedures can include bleaching trays and strips.
  • the present invention seeks to meet the long-felt but as yet unmet need for natural and naturally derived oral care products (in particular, dentifrices, mouthwashes, whitening strips and whitening gels) that contain safe and effective amounts of natural ingredients useful in cleaning and maintaining healthy, attractive teeth and gums.
  • Products of the present invention are tailored to provide visibly whiter teeth and fresher/cleaner breath.
  • Figure 1 illustrates an embodiment of the whitening strip of the present invention [10] attached to a release liner [20]. This embodiment is configured to be applied to the bottom row of teeth.
  • Figure 2 illustrates an embodiment of the whitening strip of the present invention [1 1] attached to a release liner [20]. This embodiment is configured to be applied to the top row of teeth.
  • FIG. 3 illustrates the VITA TOOTHGUIDE 3-D MASTER® system.
  • Figure 4 lists, in table form, shade classifications in the VITA TOOTHGUIDE 3-D MASTER ® system and a corresponding Shade Number ranging from 1 to 26.
  • Figure 5 illustrates a 7-point plot used by an observer for scoring the chroma and hue of a tooth.
  • Figures 6 - 10 are tables that present, respectively, improvement (i.e., lightening) in tooth shade by at least 3, 4, 5, 6 and 7 shades, and are based on the TOOTHGUIDE 3-D MASTER ® system and corresponding Shade Number (as presented in Figure 4).
  • the present invention is directed to methods of whitening teeth by administering an oral care product - mouthwash, toothpaste, whitening strip, or whitening gel applied via a pen - consisting essentially of (i) a sea salt, preferably Dead Sea salt, and (ii) a whitening complex consisting of coconut oil, lemon peel oil and sage oil.
  • the oral care product also contains (xx) xylitol, (yy) aloe vera leaf juice and (zz) at least one essential oil selected from the group consisting of peppermint oil, wintergreen oil, or spearmint oil.
  • a basic and novel characteristic of the oral care products of the present invention is the absence of: artificial colors, dyes or flavors; paraben or formaldehyde
  • a further basic and novel characteristic of the present invention is the ability to whiten without using a peroxide bleaching agent.
  • peroxide bleaching agents include hydrogen peroxide, calcium peroxide, carbamide peroxide, and mixtures thereof.
  • peroxides are absent from the oral care product and are considered as Excluded Ingredients.
  • Another basic and novel characteristic of the oral care products of the present invention is non-cytotoxicity within the framework of ISO 10993-5 "Biological
  • a further basic and novel characteristic of the oral care compositions of the present invention is the absence of ethyl alcohol and/or glycerin; preferably neither ethyl alcohol nor glycerin is present in the mouthwashes of the invention.
  • Certain mouthwash embodiments of the present invention may
  • alcohol free In labeling personal care and cosmetic products, the term "alcohol,” used by itself, is to be understood by the person having ordinary skill in the art as referring to ethyl alcohol. Accordingly, products labeled as “alcohol free” may contain other alcohols, including menthol or glycerol.
  • a further basic and novel characteristic of the oral care compositions of the present invention is the absence of fluoride and/or baking soda; preferably neither fluoride nor baking soda is present in the dentifrices of the invention.
  • fluoride and/or baking soda are to be considered as Excluded Ingredients.
  • Fluoride may be included in certain formulations within the scope of the invention (e.g., to strengthen tooth enamel and/or remineralize teeth).
  • the phrase "consisting essentially” used to described oral care compositions of the present invention is to be understood to mean that: (i) the following essential and required component ingredients are present in the oral care compositions of the invention (a) sea salt, preferably Dead Sea salt, and (b) a whitening complex consisting of at least two, and more preferably all three, of coconut oil, lemon peel oil, and sage oil are; and (ii) Excluded Ingredients are not present in the oral care compositions of the invention.
  • a dentifrice is meant a preparation for cleansing and polishing the teeth, that may, and preferably does provide one or more therapeutic benefits (as described below).
  • a dentifrice also referred to in the art and in this application as a “toothpaste”
  • a toothbrush may be formulated as a paste, gel or powder and is preferably applied with a toothbrush.
  • Dentifrice embodiments of the present invention are administered by dispensing at least about 0.25 grams of a dentifrice of the present invention (commonly described in the scientific literature and in recommendations from dental professionals and toothpaste manufacturers as a "pea sized" amount), and more preferably at least 0.50 grams of dentifrice, and brushing the teeth for at least 30 seconds, preferably for at least 60 seconds, and still more preferably for at least 120 seconds, at least once per day, in the evening prior to going to sleep.
  • a dentifrice of the present invention commonly described in the scientific literature and in recommendations from dental professionals and toothpaste manufacturers as a "pea sized” amount
  • the teeth for at least 30 seconds, preferably for at least 60 seconds, and still more preferably for at least 120 seconds, at least once per day, in the evening prior to going to sleep.
  • the dose of toothpaste per administration ranges from about 0.4 to about 0.6 grams.
  • toothbrushing is meant placing the bristles of a toothbrush in contact with the teeth, preferably at an angle of about 45 degrees to the gum line (where the gums and teeth meet), and moving the bristles in gentle, short strokes along the outer surfaces (cheek side), the inside surfaces (tongue side) and the chewing surfaces of all teeth.
  • the strokes may be in a back-and-forth motion (side-to-side, or up-and-down) or a circular motion. After brushing, the dentifrice is expectorated.
  • dentifrice embodiments of the present invention are
  • mouthwash a solution that is swished, preferably vigorously, around the mouth, and then expectorated, thereby cleaning the mouth and making the breath smell pleasant.
  • Mouthwash embodiments of the present invention are administered by swishing about 15-20 ml (about 0.5-0.75 fluid ounces) in the mouth, for a period of time sufficient to contact the teeth, the gums, the roof of the mouth and the tongue.
  • mouthwash is swished for at least 30 seconds, preferably for at least 60 seconds, at least once per day, in the evening prior to going to sleep.
  • mouthwash embodiments of the present invention are administered for at least 30 seconds, preferably for at least 60 seconds, most preferably for at least 120 seconds, at least once per day twice daily -once in the evening, after brushing prior to going to sleep; and once in the morning after brushing after breakfast.
  • a person practicing an oral care regimen in accordance with present invention brushes his/her teeth with a dentifrice of the invention for at least 30 seconds, more preferably for at least 60 seconds, and then swishes a mouthwash of the invention in his/her mouth for a period of at least 30 seconds, preferably at least 60 seconds - a period of time sufficient for the mouthwash to contact the teeth, the gums, the roof of the mouth and the tongue.
  • compositions of the invention since oral care compositions of the invention are not intended for ingestion, to expectorate the oral care composition after use (i.e., brushing in the case of a dentifrice, or swishing in the case of a mouthwash).
  • whitening strip is meant a hydratable adhesive film that adheres (sticks) to teeth.
  • whitening pen is meant a gel that is stored in, and administered from, a pen applicator onto the surface of the teeth.
  • an "essential oil” is a mixture of terpenic hydrocarbons, especially monoterpenes and sesquiterpenes, and oxygenated derivatives such as aldehydes, ketones, epoxides, alcohols, and esters.
  • Non-cytotoxicity of oral care products of the present invention is confirmed within the framework of ISO 10993-5:2009 based on the widely-used Trypan blue exclusion test.
  • Trypan blue is a colorant which stains dead cells, i.e., cells with loss of membrane integrity.
  • Balb/c 3T3 clone A31 cells ATCC CCL 163; 86th passage
  • DMEM Dulbecco's Modified Eagle Medium
  • FCS fetal calf serum
  • Culture medium is withdrawn and replaced with a solution of one of the following: oral care products of the present invention at 5,000 ⁇ g/mL, as well as dilutions 1 ,500 ⁇ g/mL, 500 ⁇ g/mL and 150 ⁇ g/mL; a "negative" control (phenol, Chemical Abstract Service No. 108-95-2, 0.64mg/ml_); and a "positive” control (DMEM supplemented with 10 % (v/v) FCS and 1 % antibiotics (v/v).
  • a positive control is defined as statistically significant (30% or greater) inhibition of cell growth as compared to the negative control.
  • a "consumable chromogenic substance” is a food, beverage or tobacco product that causes tooth staining or discoloration.
  • Non-limiting examples of consumable chromogenic foods include berries, soy sauce and curries.
  • Non-limiting examples of consumable chromogenic beverages include coffee, tea and red wine.
  • Consumable chromogenic tobacco products include cigarettes and smokeless tobacco (that is chewed).
  • phrases "at least one” means one or more, and also includes individual components as well as mixtures/combinations.
  • a "dental arch” is the crescent arrangement of teeth, one on each jaw, that together constitute the dentition.
  • Numerical ranges are meant to include numbers within the recited range, and combinations of subranges between, the given ranges. For example, a range from 1 -5, includes 1 , 2, 3, 4 and 5, as well as subranges such as 2-5, 3-5, 2-3, 2-4, 1 -4, etc.
  • Sea salt is a mixture of inorganic salts from sea water or from inland bodies of salt water. Sea salt may be in the form of a precipitate (on the bottom of a marsh or salt pan or flat) or crystals that float on the surface of the water (known as fleur de sel).
  • One particularly preferred sea salt suitable for use in the oral care products of the present invention is Dead Sea salt, which is a mixture of natural hygroscopic minerals and micronutrients found in the Dead Sea and is comprised of sodium chloride, magnesium, potassium, and calcium chlorides and bromides.
  • Himalayan salt which is harvested from the Punjab Region of Pakistan, and is comprised of sodium chloride (about 95-98%), with about 2 to 3% polyhalite (potassium, calcium, magnesium, sulfur, oxygen, hydrogen), fluoride, iodine, and smaller amounts of other trace minerals.
  • Dead Sea salt is present in oral care products of the invention of the invention at a concentration of less than about 3%, preferably a concentration of from about 0.1 % to 2%, still more preferably a concentration of from about 0.5% to about 1 .5%.
  • Citrus limon (lemon) peel oil is the volatile oil obtained from the peel of Citrus limon.
  • Salvia officinalis (sage) oil is the essential oil derived from the herbal plant, Salvia officinalis.
  • Cocos nucifera (coconut) oil is an oil obtained from the kernel or seed of Cocos nucifera.
  • whitening oral care products of the present invention contain coconut oil and lemon peel oil in a ratio of about 1 :1.
  • whitening oral care products of the present invention contain coconut oil, lemon peel oil, and sage oil in a ratio of about 1 :1 :1 .
  • Xylitol is the pentahydric alcohol.
  • Aloe vera leaf juice useful in the present invention preferably contains (i) glycosides at a concentration of at least about 1 %, preferably at least about 2%, and still more preferably at about 3%, as well as (ii) at least two, preferably three, anti-inflammatory agents selected from the group of anthraquinones, sterols, auxins and gibberellins and (iii) and immunomodulatory muccopolysachharides, preferably Acemannan.
  • Spearmint oil is the volatile oil obtained from the leaves of Mentha viridis (also known as Mentha spicata).
  • Peppermint oil is a volatile oil obtained from the whole plant Mentha piperita.
  • Wintergreen oil is the volatile oil obtained from the leaves of Gaultheria procumbens.
  • oral care products of the present invention contain one or more essential oils selected from the group consisting of spearmint oil, wintergreen oil, and peppermint oil.
  • oral care products of the present invention include peppermint oil and one of wintergreen oil or spearmint oil.
  • oral care products of the present invention include wintergreen oil and one of peppermint oil or spearmint oil.
  • oral care products of the present invention include spearmint oil and one of peppermint oil or wintergreen oil.
  • the oral care products of the present invention contain spearmint oil, peppermint oil, and wintergreen oil.
  • Menthol an alcohol that can be isolated from peppermint or other mint oils, can also be used in oral care products of the present invention.
  • oral care products of the present invention also preferably include oils of one or both of Ocimum basilicum (basil) or Eugenia caryophyllus (clove flower).
  • basil oil is present at a
  • Other essential oils that may be included in oral care products of the present invention include Melaleuca alternifolia (tea tree) leaf oil, the oil distilled from the leaves of the Melaleuca alternifolia, and Zingiber officinale (ginger) root oil, which is obtained from the dried rhizomes of Zingiber officinale.
  • Dentifrice embodiments of the present invention may include mild abrasives (to remove debris and residual surface stains), humectants (to prevent water loss in the toothpaste), thickening products, also known in the art as binders (to stabilize the toothpaste formula), flavoring products (for taste) and detergents (to create foaming action).
  • mild abrasives to remove debris and residual surface stains
  • humectants to prevent water loss in the toothpaste
  • thickening products also known in the art as binders (to stabilize the toothpaste formula), flavoring products (for taste) and detergents (to create foaming action).
  • Mild abrasives suitable for use in the toothpaste embodiments of the present invention include calcium carbonate, dehydrated silica gels, hydrated aluminum oxides, magnesium carbonate, phosphate salts and silicates.
  • Silica, also called silicone dioxide, bentonite clay and hydrated silica are minerals.
  • Some toothpastes of the present invention preferably contain hydrated silica.
  • Humectants that may be, and preferably are, ingredients in toothpastes of the present invention include glycerin, preferably vegetable glycerine, propylene glycol, and sorbitol.
  • glycerin a sugar alcohol that can be synthesized or obtained from natural sources, is an especially preferred humectant used in toothpastes of the invention.
  • vegetable glycerin is used in oral care compositions of the present invention.
  • Non-limiting examples of thickening products that may be, and preferably are included in toothpaste embodiments of the present invention include gums and colloids.
  • Preferred colloids are of marine origin, even more preferably seaweeds.
  • Two preferred gums are xanthan gum and biosaccharide gum-1 ; both are
  • Xanthan gum is derived from glucose or corn syrup.
  • Biosaccharide gum-1 is derived from sorbitol.
  • Carrageenan a polysaccharide hydrocolloid obtained from edible red seaweeds in the Gigartinaceae or Solieriaceae families, may be, and preferably is, present in toothpastes of the invention.
  • Whitening toothpastes of the present invention contain the following ingredients at the following concentrations.
  • Dead sea salt is present in whitening toothpastes of the present invention at a concentration of from about .5% to about 3.0%, preferably from about .75% to about 1 .75%, and most preferably from about 1 .0% to about 1 .5%.
  • coconut oil is present at a concentration of from about 0.001 % to about 5%, preferably from about .005% to about 1 %, and most preferably from about .09% to about .9%.
  • lemon peel oil is present at a concentration of from about .001 % to about 5%, preferably from about .005% to about 1 %, and most preferably from about .09% to about .9%.
  • sage oil is present at a concentration of from about .001 % to about 5%, preferably from about .005% to about 1 %, and most preferably from about .09% to about .9%.
  • Aloe vera leaf juice is preferably a component of the whitening toothpastes of the present invention at a concentration of from about 10% to about 90%, preferably from about 20% to about 85%, and most preferably from about 40% to about 70%.
  • Xylitol is preferably a component of the whitening toothpastes of the present invention at a dose of about 0.1 gram/brushing.
  • concentration of xylitol can range from about 5% to about 30%, preferably from about 15% to about 25%, and most preferably from about 17% to about 22%.
  • Peppermint oil when present in whitening toothpastes of the present invention, is included at a concentration of from about .001 % to about .07%, preferably from about .005% to about .06%, and most preferably from about .01 % to about .03%.
  • Spearmint oil when present in whitening toothpastes of the present invention, is included at a concentration of from about .01 % to about 2%, preferably from about .05% to about 1 .5%, and most preferably from about .09% to about 1 .2%.
  • Wintergreen oil when present in whitening toothpastes of the present invention, is included at a concentration of from about .05% to about 1 %, preferably from about .1 % to about .5%, and most preferably from about .2% to about .4%.
  • Basil oil when present in whitening toothpastes of the present invention, is included at a concentration of from about .001 % to about .05%, preferably from about .005% to about .03%, and most preferably from about .02% to about .035%.
  • Clove flower oil when present in whitening toothpastes of the present invention, is included at a concentration of from about .001 % to about .05%, preferably from about .005% to about .04, and most preferably from about .01 % to about .03%.
  • Vegetable glycerin is preferably present in whitening toothpastes of the present invention at a concentration of from about 5% to about 20%, preferably from about 8% to about 12%, and most preferably about 10%.
  • Carrageenan is preferably present in whitening toothpastes of the present invention at a concentration of from about .05% to about 5%, preferably from about .1 % to about .3%, and most preferably from about .15% to about .25%.
  • Xanthan gum is preferably present in whitening toothpastes of the present invention at a concentration of from about .1 % to about 1 .0%, preferably from about .4% to about .8%, and most preferably from about .5% to about .7%.
  • Titanium dioxide may be used in whitening toothpastes of the present invention at a concentration of from about .01 % to about 1 .0%, preferably from about .03% to about .07%, and most preferably from about .4% to about .6%.
  • Hydrated silica may be used in whitening toothpastes of the present invention at a concentration of from about 5% to about 25%, preferably from about 10% to about 20%, and most preferably from about 14% to about 17%.
  • Sodium methyl cocoyl taurate is preferably used in whitening toothpastes of the present invention at a concentration of from about .3% to about 2%, preferably from about .5% to about 1 .5%, and most preferably from about .8% to about 1 .2%.
  • Whitening mouthwashes of the present invention contain the following ingredients at the following concentrations.
  • Dead Sea salt is present in whitening mouthwashes of the present invention at a concentration of from about 0.5% to about 5%, preferably from about .75% to about 3%, and most preferably from about 1 % to about 2%.
  • coconut oil is present at a concentration of from about 0.001 % to about 5%, preferably from about 0.1 % to about 0.7%, and most preferably from about 0.15% to about 0.6%.
  • lemon peel oil is present at a concentration of from about .001 % to about 5%, preferably from about 0.1 % to about .7%, and most preferably from about .15% to about .6%.
  • sage oil is present at a concentration of from about .001 % to about .09%, preferably from about .005% to about .05%, and most preferably from about .01 % to about .03%.
  • Aloe vera leaf juice is preferably present in whitening mouthwashes of the present invention at a concentration of from about 10% to about 90%, preferably from about 20% to about 85%, and most preferably from about 50% to about 70%.
  • Xylitol is preferably present in whitening mouthwashes of the present invention at a concentration of from about 5% to about 30%, preferably from about 7% to about 15%, and most preferably from about 8% to about 12%.
  • Basil oil when present in whitening mouthwashes of the present invention, is included at a concentration of from about .005% to about .5%, preferably from about .01 % to about .2%, and most preferably from about .02% to about .1 %.
  • Clove flower oil when present in whitening mouthwashes of the present invention, is present at a concentration of from about .005% to about .075%, preferably from about .01 % to about .04%, and most preferably from about .01 % to about .03%.
  • Peppermint oil when present in whitening mouthwashes of the present invention, is included at a concentration of from about .005% to about .12%, preferably from about .01 % to about .1 %, and most preferably from about .02% to about .09%.
  • Spearmint oil when present in whitening mouthwashes of the present invention, is included at a concentration of from about .01 % to about 1 %, preferably from about .02% to about .17%, and most preferably from about .05% to about .15%.
  • Wintergreen oil when present in whitening mouthwashes of the present invention, is included at a concentration of from about .03% to about 1 %, preferably from about .05% to about .5%, and most preferably from about .1 % to about .45%.
  • Toothpastes and mouthwashes of the present invention may also, optionally, in place of wintergreen oil, peppermint oil and/or spearmint oil, include flavorants and/or taste masking products known in the art materials.
  • the flavorants may be of natural or synthetic origin. Non-limiting examples of such flavorants include but are not limited to fruit flavors such as cherry, strawberry, lemon, lime, orange,
  • Whitening strips of the present invention consist essentially of (i) Whitening Composition in which (a) sea salt, preferably Dead Sea salt, and (b) a Whitening Complex consisting of two, and preferably three, of coconut oil, lemon peel oil and/or sage oil are added to a Gel Carrier and (ii) a two-sided flexible strip that is (a) safe for contact with the structures of the oral cavity of humans (i.e., non-toxic, non-corrosive, and non-irritating), (b) conformable to a plurality of adjacent teeth surfaces and to interstitial spaces between teeth, without permanent deformation thereof.
  • the Gel Carrier provides adhesive attachment sufficient to hold a strip in place for a desired period of time to allow the Active Ingredient(s) to be delivered to, and act on, the teeth surface, and thereby provide a desired clinical outcome - namely, whitening of teeth by at least two shades, preferably at least three shades, more preferably at least four shades, even more preferably at least five shades, still more preferably at least six shades; and, in certain embodiments, by at least seven shades. See discussion below for methods of measuring whitening (i.e., lightening) of teeth by at least two shades.
  • the Gel Carrier is comprised of at least one gelling agent known in the art and (a) is generally recognized to be safe for oral use, (b) does not readily dissolve in saliva, and (c) does not react with, inactivate, or cause the degradation or loss of desired function of Active Ingredients in the Whitening Composition.
  • Non-limiting examples of suitable gelling agents that may, and preferably are, components of the Gel Carrier, include: carboxypolymethylene, carboxymethyl cellulose, carboxypropyl cellulose, poloxamer, carrageenan, magnesium aluminum silicate (commercially-available under the tradename Veegum ® from Vanderbilt Materials, LLC), carboxyvinyl polymers (including Carbomer), and natural gums such as gum karaya, xanthan gum, guar gum, gum arabic, gum tragacanth, and mixtures thereof.
  • Carbomers are a class of homopolymers of acrylic acid crosslinked with an allyl ether of pentaerythritol, an allyl ether of sucrose, or an allyl ether of propylene.
  • One preferred Carbomer gelling agent is carboxypolymethylene, available from B. F. Goodrich Company under the tradename Carbopol ® .
  • Particularly preferred Carbopol ® is carboxypolymethylene, available from B. F. Goodrich Company under the tradename Carbopol ® .
  • Carbopols include Carbopol ® 934, 940, 941 , 956 and mixtures thereof. Especially preferred is Carbopol ® 956.
  • polyvinylpyrrolidone is of a molecular weight in a range of 1 ,000,000 to 1 ,500,000. In certain embodiments, polyvinylpyrrolidone has molecular weight of about 50,000 to about 300,000.
  • Additional gelling agents that are suitable for use in the whitening strips of the present invention include celluloses (hydroxy ethyl or propyl cellulose, ethyl cellulose) and Polyox ® water-soluble resins available from Dow Corning (Midland, Michigan).
  • Polyox ® resins are nonionic, high molecular weight water-soluble poly (ethylene oxide) polymers with molecular weights ranging from 100,000 to about 8,000,000.
  • Gantrez ® copolymers - monoalkyl esters of poly (methyl vinyl ether/maleic acid) with varying ester groups - available from Ashland are also suitable for to thicken the whitening compositions and promote adhesion between the strip and teeth surfaces.
  • Gelling agents as described above is/are preferably present in the Whitening
  • Composition at a concentration from about 0.1 % to about 15%, preferably from about 1 % to about 10%, more preferably from about 2% to about 8%, and most preferably from about 4% to about 7%, by weight.
  • the viscosity and tackiness of the Whitening Composition(s) are such that the whitening strip (a) remains adhesively attached to a plurality of adjacent teeth for the desired contact time without substantial slippage under friction from the lips, tongue, and other soft tissue rubbing against the strip (e.g., during mouth movements associated with talking) and (b) can be easily removed by the wearer by applying a peel force using a finger or fingernail, and not requiring the use of an instrument, a chemical solvent, or undue friction.
  • the peel force required to remove the strip is from about 1 gram to about 50 grams for a strip that is 1 .5 cm in width. Even more preferably, for a strip that is 1 .5 cm in width, the peel force is from about 5 grams to about 40 grams, and more preferably from about 10 grams to about 30 grams.
  • the Whitening Composition has a viscosity of from about 200 to about 1 ,000,000 at low shear rates. More preferably, the viscosity is from about 100,000 to about 800,000 cps, and even more preferably the viscosity is from about 400,000 to about 600,000 cps.
  • Whitening Composition(s) is preferably in the form of a gel, it can also be in the form of a liquid or paste that meets the above viscosity and tackiness profile.
  • the Whitening Composition is applied to a first side of the flexible strip; a release liner (defined below) is placed on top of the Whitening Composition. The first side is applied to the teeth surface after the release liner is removed.
  • a second side of the strip (opposite the side covered by the release liner) is designed to serve as a protective barrier to minimize, and preferably substantially prevent, the Whitening Composition from coming into contact with saliva as well as the wearer's lips, tongue, and other soft tissue surrounding the teeth (e.g., papilla, marginal gingiva, gingival sulcus, inter dental gingiva, gingival gum structure on lingual and buccal surfaces up to and including muco-gingival junction and the pallet).
  • the whitening strip is applied to the teeth for a period of time of at least about 5 minutes, preferably at least about 10 minutes, more preferably for at least about 15 minutes, even more preferably for at least about 20 minutes, most preferably for at least about 30 minutes; but not for longer than about 60 minutes.
  • the flexible strip component of the whitening strip may be a single layer of material or a laminate, or a plurality or layers of materials or laminates, a heterogeneous mixture of ingredients, separate stripes or spots or other patterns of ingredients, or a combination of laminates, layers, stripes, and/or spots of ingredients.
  • the one or more materials/laminates and other components/ingredients (i) meet the flexural rigidity characteristics described below.
  • the flexible strip may be constructed of polymers, natural and synthetic woven materials, non-woven materials, foil, paper, rubber, and combinations thereof.
  • the material(s) used to construct the flexible strip is/are polymers that are substantially water impermeable and/or polymers or gelling agents (described above) that are hydratable.
  • Suitable polymers include, but are not limited to, polyethylene, ethylvinylacetate, ethylvinyl alcohol, polyethylene, polyesters (such as Mylar ® , manufactured by DuPont), fluoroplastics (such as Teflon ® , manufactured by DuPont), and combinations thereof.
  • the whitening strip of the invention is less than about 2 mm thick, preferably less than about 1 mm thick, and more preferably less than about 0.5 mm thick, and even more preferably less than about 0.1 mm thick.
  • the whitening strip of the invention is configured in a shape that has rounded corners, by which is meant not having any sharp angles or points.
  • the size (length and width) of the whitening strip of the invention will vary based upon one or more factors, including the number of teeth to be treated (i.e., whitened), the size of the teeth, and personal preference of the wearer.
  • the whitening strip of the invention is of a length that covers at least the front 6-10 teeth of the upper or lower rows of teeth that are visible when the wearer is smiling.
  • the strip covers the entire upper and/or lower rows of teeth.
  • the length of the whitening strip of the invention is from about 2 cm to about 12 cm, preferably from about 4 cm to about 9 cm.
  • the width of the whitening strip of the invention will vary depending on whether the strip is intended to cover the front surface of the teeth, or wrap around the teeth and cover both surfaces of the teeth.
  • the width of the whitening strip of the invention is from about 0.5 cm to about 4 cm, preferably from about 1 to about 2 cm.
  • the flexural stiffness of the whitening strip of the invention is determined by strip thickness, strip width, and material modulus of elasticity.
  • One method for measuring flexural stiffness of a polymeric strip is ASTM D2912-95, which employs a strain gauge wired to a microammeter. In accordance with this method, the rigidity of the strip is read directly from the microammeter and expressed as grams per centimeter of strip width.
  • a non-limiting, but preferred, instrument for measuring flexural stiffness is Handle-O-Meter ® , available from Thwing-Albert Instrument Co. of
  • the whitening strip of the invention has a flexural stiffness of less than about 5 grams/cm, preferably a flexural stiffness less than about 4 grams/cm, more preferably less than about 3 grams/cm, and most preferably from about 0.1 grams/cm to about 1 grams/cm.
  • the flexural stiffness of the whitening strip of the invention is substantially constant and does not significantly change during normal use.
  • the strip does not need to be hydrated for the strip to achieve flexural stiffness in the above-specified ranges.
  • Low flexural stiffness is an important property of the whitening strip of the invention, which allows the strip to drape over, and conform to, the contoured surfaces of teeth of the wearer's mouth, including gaps between adjacent teeth.
  • the flexibility (low flexural stiffness) of the whitening strip of the invention enables the strip to contact soft tissue over an extended period of time without physical irritation.
  • the whitening strip of the invention may, in certain embodiments, be configured to have shallow recesses to create reservoirs (depots) for the whitening composition of the Invention and/or different oral care products.
  • These recesses may be filled, for example, with: Dead Sea salt and/or coconut oil; a peroxide (e.g., hydrogen peroxide or carbamide peroxide); a combination of one or both of Dead Sea salt and/or coconut oil and a peroxide (for example, Dead Sea salt and a peroxide; coconut oil and a peroxide; Dead Sea salt, coconut oil and a peroxide).
  • the release liner may be formed from any material which exhibits less affinity for the Whitening Composition than the Whitening Composition exhibits for (a) itself and (b) for the flexible strip.
  • the release liner preferably comprises a rigid sheet of material such as polyethylene, paper, polyester, or other material which is then coated with a non-stick type material.
  • the release liner material may be coated with wax, silicone, polyester such as Teflon ® , fluoropolymers, or other non-stick type materials.
  • the release liner material may crack when the strip is flexed.
  • the release liner may be cut to substantially the same size and shape as the strip or the release liner may be cut larger than the strip to provide a means for separating the release liner from the strip.
  • the release liner may have a tab, or be scored, to facilitate separation from the strip.
  • the release liner may be two overlapping pieces in a bandage-type design.
  • the Whitening Composition(s) is homogeneous, and is preferably coated onto the strip in a uniform manner.
  • more than one Whitening Composition(s) may be coated onto the strip in a series of separate stripes or spots or other patterns of ingredients. While preferred embodiments of the present invention are directed to whitening oral care products that contain as the only Active Ingredients a sea salt and a Whitening Complex, some embodiments may also contain as a further Active Ingredient an additional ingredient that whitens the surface of teeth (i.e., bleaching or stain removal), including, but not limited to, peroxides, metal chlorites, perborates, percarbonates, peroxyacids, and combinations thereof.
  • the peroxide compound should provide an amount of hydrogen peroxide equivalent of from about from about 0.1 % to about 40%, preferably from about 0.5% to about 10%, and most preferably from about 1 % to about 7%, by weight of the substance.
  • Preferred peroxide compounds include hydrogen peroxide, calcium peroxide, carbamide peroxide, and mixtures thereof.
  • a particularly preferred peroxide is carbamide peroxide.
  • carbamide peroxide is carbamide peroxide.
  • carbamide peroxide is included in the whitening composition in an amount of from about 0.1 % to about 45% and preferably from about 3% to about 20% on a weight/weight basis.
  • Preferred metal chlorites include calcium chlorite, barium chlorite, magnesium chlorite, lithium chlorite, sodium chlorite, and potassium chlorite.
  • active ingredients suitable for inclusion in the strips of the present invention for purposes of whitening the surface of teeth include hypochlorite and chlorine dioxide.
  • whitening strips of the present invention include Dead Sea salt, coconut oil, lemon peel oil and sage oil, each a concentration of up to about 10.0%, preferably each a concentration of up to about 5.0%, and even more preferably at a concentration of at least about 3.0%.
  • Each of these ingredients is preferably present at a concentration of up to about 800 grams, and more preferably up to about 400 grams.
  • whitening strips of the present invention include Dead Sea salt, coconut oil, lemon peel oil and sage oil in a ratio of about 1 :1 :1 :1 .
  • the whitening strips of the present invention preferably include a hydratable adhesive matrix comprised of glycerol, carbomer and a cellulose, preferably carboxymethylcellulose.
  • Certain embodiments of the present invention are directed to methods for visibly whitening teeth (and removing stains) and/or preventing or reducing the amount of staining by using a Whitening Pen in which a gel composition is stored in, and dispensed from, a pen application.
  • the gel composition is preferably the Whitening Composition that is used in the whitening strips of the present invention.
  • Improvement in tooth shade i.e., lightening
  • Shade can be, and in preferred embodiments of the present invention, is described according to the Munsell color space in terms of value, chroma, and hue, each defined below.
  • Value indicates the lightness of a color. Lightness is defined by the Commission Internationale de I'Eclairage (“CIE”) as the "brightness of an area judged relative to the brightness of a similarly illuminated area that appears to be white or highly transmitting.”
  • CIE Commission Internationale de I'Eclairage
  • Chroma is the degree of color saturation, and is defined by the CIE as the
  • Hue is the attribute of a color that enables the clinician to distinguish between different families of color, and defined as the "attribute of a visual perception according to which an area appears to be similar to one of the colours: red, yellow, green, and blue, or to a combination of adjacent pairs of these colours considered in a closed ring".
  • Hue is represented by A, B, C or D on the commonly used VITA Classic shade guide.
  • improvement in tooth shade i.e., lightening
  • the VITA TOOTHGUIDE 3-D MASTER ® system is organized into five primary value levels, arranged from the lightest (value level 1 ) to the darkest (value level 5), left to right. These values, in turn, are further distributed (subdivided) based on chroma and hue. Within each of the five groups, shade tabs are arranged vertically according to chroma (pale to saturated and horizontally according to hue (yellowish to reddish).
  • value is determined first, followed by chroma.
  • Hue is determined last, by matching with shade tabs of the value and chroma already determined.
  • the phrase "improvement in shade” is assessed by a three-step process as described immediately below.
  • lightness, chroma and hue are determined.
  • the lightness of a patient's tooth is determined by holding the shade guide (i.e., sample) directly in front of the tooth, at a distance of approximately 25 - 30 cm.
  • the trained observer e.g., clinician
  • the observer begins by looking at the dark end (5) and moves toward the light end (0).
  • the observer matches chroma (pale or saturated).
  • the observer starts by removing a shade guide with the middle hue (M) from the selected lightness level.
  • the observer then chooses one of three chroma within the selected lightness level.
  • the observer determines hue by comparing the selected shade guide to the shade guide directly to the left (L) and right (R), and determines whether the tooth is more yellow (L) or red (R) than the middle (M) shade guide.
  • the observer may, and in certain embodiments does, score chroma and hue using the 7-point plot shown in FIG. 5.
  • the trained observer assigns an initial (baseline) shade based on the VITA TOOTHGUIDE 3-D MASTER ® system, and then assigns a corresponding Shade Number ranging from 1 to 26. See FIG. 4. The observer then tracks improvement (lightening) of tooth shade based on reduction (lowering) of the shade number.
  • practicing the methods of the present invention produces an improvement in tooth shade by lowering shade number by at least three.
  • a consumer starts with a shade number of "15" (3R2.5) and after administering one or a combination of oral care products of the present invention (e.g., a whitening dentifrice, and a whitening mouthwash; or a whitening dentifrice, a whitening mouthwash, and a whitening strip) the consumer's tooth shade number becomes "12" (3R1 .5) or “1 1 " (3L1.5) or “10” (3M1 ), preferably “9” (2M3), more preferably "8” (2R2.5) or “7” (2L2.5) or “6” (2M2), and even more preferably "5" (2R1 .5) or "4" (2L1 .5) or “3” (2M1 ).
  • a combination of oral care products of the present invention e.g., a whitening dentifrice, and a whitening mouthwash; or a whitening dentifrice, a whitening mouthwash, and a whitening strip
  • VITA TOOTHGUIDE 3-D MASTER ® is further described in the following scientific and patent publications, which are incorporated, in pertinent part, by reference: AJ Hasell et al., "Determination of VITA Classical shades with the 3D- Master shade guide," Acta Odontol. Scand. Vol. 71 , No. 3-4, pp. 721-726 (2014); N. Corcordel, et al, "The linear shade guide design of Vita 3D-master performs as well as the original design of the Vita 3D-master," J. Oral Rehabil., Vol. 37, pp. 860-865 (2010); US Patent Application Pre-Grant Publication 2010/005563.
  • tooth shade guides are known to the person having ordinary skill in the dental arts and can be used to assess lightening achieved by practicing the methods of the present invention.
  • shade guide systems include: VITA Classical (VITA North America, Yorba Linda, California) and CHROMASCOP ® (Ivoclar Vivadent, Inc., Amherst, NY).
  • VITA CLASSICAL A1 -D4 ® system is arranged by four hues - "A”, “B”, “C”, or “D”, and subdivided as follows: A1 , A2, A3, A4 - reddish to brownish; B1 , B2, B3, B4 - reddish to yellowish; C1 , C2, C3, C4 - greyish; D2, D3, D4 - reddish to greyish.
  • the CHROMASCOP ® system is arranged by value levels covering the area of the CIE 1976 (L * a * b * ) color space of "natural teeth". Five groups - ranging from white, yellow, light brown, grey, to dark brown - have tabs representing different chroma and hue.
  • Each chip had an approximate size of 5 mm 5 mm 3 mm in size.
  • An impermeable plastic was affixed to the cut surfaces of the chips.
  • Each pair was stained in a separate vial by immersion in a concentrated black tea solution "overnight” (for about 12 hours).
  • the concentrated black tea solution was produced by steeping 2 teabags (LIPTON'S ® yellow label black tea) in 1 ⁇ 2 cup of boiling water for 30 minutes. After staining, two (2) groups - Group 1 and Group 2 - were created. Each group consisted of ten pairs - A and B.
  • Chips in Group 1 were used to compare whitening of stained dental enamel by (i) a whitening mouthwash of the invention ("Test Mouthwash”) versus (ii) a commercial whitening mouthwash, CREST ® 3D Whitening Mouthwash ("Prior Art Mouthwash”). As detailed below, Test Mouthwash achieved a similar degree of whitening as the Prior Art Mouthwash (no statistical difference, p>0.05).
  • Chips in Group 2 were used to compare whitening of stained dental enamel by (i) a whitening strip of the invention ("Test Strips”) versus (ii) a commercial whitening strip, CREST ® 3D Whitening Strips ("Prior Art Strips"). As detailed below, Test Strips achieved a similar degree of whitening as Prior Art Strips (no statistical difference, p>0.05).
  • Chips in Group 1 A were treated with Test Strips. Chips in Group 1 B were treated with Prior Art Strips.
  • treated is meant a whitening strip was applied to the chip for 60 minutes; thereafter, the chips were immersed in a saliva solution for approximately one (1 ) minute. The saliva solution was collected "fresh”, without stimulation, and was filtered to remove particulate matter. The above procedure was repeated a total of ten (10) times.
  • Chips in Group 2A were treated with a Test Mouthwash. Chips in Group 2B were treated with Prior Art Mouthwash.
  • treated is meant immersion for about one minute in either the Test Mouthwash or the Prior Art Mouthwash; thereafter, the chips were immersed in a fresh saliva solution as described above for approximately one (1 ) minute. The above procedure was repeated a total of ten (10) times.
  • Each treatment (i.e., immersion) with a mouthwash is viewed as the clinical equivalent of use for thirty (30) consecutive days at the recommended dose administered (rinsed) twice daily, each administration having a duration of 1 minute.
  • Baseline b * values for the 2 groups did not differ significantly (p>0.05). Except as noted below, there were no statistically significant differences (p>0.05) between the effects of treatment with the Test and Prior Art Mouthwash formulations. At 6 hours, chips treated with the Prior Art Mouthwash showed a somewhat greater shift to a yellow hue. At 48 hours, chips treated with the Test Mouthwash showed a somewhat more yellow hue.
  • Baseline L * values for Groups 2A and 2B did not differ significantly (p>0.05).
  • the efficacy of the Test Mouthwash and the Prior Art Mouthwash in terms of lightening did not differ significantly over the first three hours (p>0.05).
  • the maximum effectiveness of the Test Mouthwash was observed after about 1 hour of treatment. Increased treatment time was observed to add approximately 6% of additional lightening effect.
  • the remaining two handling strips underwent “treatment”, i.e., application of either a Test Strip or a Prior Art Strip to the chips for 60 minutes and, thereafter, immersion in a saliva solution (as described above in Example 1 ) for approximately one (1 ) minute.
  • treatment i.e., application of either a Test Strip or a Prior Art Strip to the chips for 60 minutes and, thereafter, immersion in a saliva solution (as described above in Example 1 ) for approximately one (1 ) minute.
  • the active intervention handling strips Prior to treatment, were stored in a 0.5%
  • each chip was measured by reflectance spectrophotometer (PCE-CSM 1 , PCE Instrumentation (Alicante, Spain) D-65 standard illuminant; 4 mm diameter measuring area) and photographed under standard lighting conditions (i.e., the same lighting conditions were used throughout the study).
  • PCE-CSM 1 reflectance spectrophotometer
  • Chips in treatment and control groups were compared to determine the extent of microstructural surface (if any) by a blinded evaluator with experience and training in evaluating enamel and dental restorations using SEM.
  • the chips were scored as "mild”, “moderate” or “severe”. Mild: small, individual, non-connected minor pitting or roughening covering less than 10% of the sample surface. Moderate: individual or connected pitting or roughening covering less than 25% of the sample surface.
  • profilometry Perthometer M2, Mahr GmbH; G5ttingen, Germany
  • profilometer tip diameter 2.4 mm
  • accuracy 0.5 mm/sec
  • measuring path 5.5 mm
  • cutoff value
  • Tooth Shade Lightening Effects of Whitening Strip of Invention Five extracted teeth samples (numbered 1 - 5) with matching degrees of staining were selected. Tooth color was measured by an experienced, blinded, trained observer using standard colorimetry and the VITA TOOTHGUIDE 3D MASTER ® tooth shade grading system. Lighting was indirect and standardized and all measurements were repeated three times.
  • samples 1 -3 had a shade of 3M2; samples 4 and 5 had a baseline shade of 2M1 .
  • Mean L * was 69.66; mean b * was 13.35.
  • a whitening strip of the invention was administered to each sample for ten hours - representative of 20 treatments, each lasting 30 minutes. Samples 1 -3 lightened to shade 1 M1 .
  • Samples 4 and 5 also lightened to shade 1 M1. After treatment, mean L * was 79.84; mean b * was 11 .85.
  • Tooth color was measured by an experienced, blinded, trained observer using standard colorimetry and the VITA TOOTHGUIDE 3D MASTER ® tooth shade grading system. Lighting was indirect and standardized and all measurements were repeated three times.
  • samples 1 -3 had a shade of 4M1 ; samples 4 and 5 had a baseline shade of 3M2.
  • Mean L * was 68.99; mean b * was 1 1 .17.
  • Samples were treated by immersion in a whitening mouthwash of the invention for 48 hours. Samples 1-3 lightened to shade 3M1 . Samples 4 and 5 also lightened to shade 3M1 . After treatment, mean L * was 71 .30; mean b * was 10.10.
  • gingival irritation More particularly, subjects self-reported sensitivity using a 5-point Likert Scale and gingival irritation as "yes” or “no").
  • a blinded clinician evaluated (a) gingival irritation by visual inspection on a scale ranging from 0 to 3 and (b) sensitivity after a 3-second blast of pressurized air - (yes or no).
  • Lower levels of gingival irritation were reported in the group that used Test Strips.
  • Comparable levels of sensitivity were reported in users of the Test Strips and the Prior Art Strips, both as self-reported by questionnaire and as evaluated by clinical evaluation at on Days 5 and 10.
  • a whitening gel of the invention Whitening Composition in Gel Carrier
  • a pen applicator administered by a pen applicator on enamel stain development during timed exposure to coffee and red wine were studied.
  • application i.e., coating
  • teeth with the whitening gel of the present invention prevented enamel staining (darkening as measured in terms of changes in L * ) for an additional 10 minutes of coffee exposure and an additional 20 minutes of red wine exposure.
  • Test Sample Preparation 20 extracted teeth that appeared healthy to the naked eye and inspection under the light microscope (x10) were bisected into 20 pairs.
  • Standardized photography and colorimetry measurements were taken at baseline. One-half of each tooth was treated with two coats of the whitening gel of the present invention; the remaining half tooth was uncoated. On the "treatment” side, a first coat was administered (e.g., painted). After drying for 30 seconds, a second coat was applied. Sample pairs were immersed in individual 20ml_ aliquots of freshly brewed VIA ® INSTANT coffee (Starbucks Corp., Seattle, Washington) according to the instructions on the packet (i.e., about one 3.3-gram packet add to 8 fluid ounces of hot water). The remaining 10 sample pairs were immersed in individual 20ml_ aliquots of red wine (CHARLES SHAW ® Cabernet Sauvignon, Trader Joe's
  • Coffee staining Coffee exposure of non-coated and coated teeth exhibited significant decrease in the L * value (darkening) over time. Teeth coated with whitening gel of the present invention began to exhibit staining after 30 minutes of immersion in coffee. In contrast, non-coated teeth began to exhibit staining after 20 minutes of coffee immersion. Changes in L * values were assessed by one-way ANOVA, as well as ANOVA with post hoc Tukey test. Minimal and not significant staining was observed at 10-minute and 20-minute time points (P>0.01 ).
  • L * increased significantly for non-coated teeth at 20-, 30-, 40-, and 50- minute time points; respectively: P ⁇ 0.01 , P ⁇ 0.01 , P ⁇ 0.001 , P ⁇ 0.001.
  • significant L * increases were observed at 30-, 40-, and 50-minute time points, but these changes were less significant than non-treated teeth; respectively, P ⁇ 0.05, P ⁇ 0.01 , P ⁇ 0.01 .
  • Red wine staining Immersion of non-coated teeth resulted in a significant decrease of L * values after each of five time points (i.e, 10 minutes, 20 minutes, 30 minutes, 40 minutes, 50 minutes; respectively: P ⁇ 0.01 , P ⁇ 0.01 , P ⁇ 0.01 , P ⁇ 0.001 , P ⁇ 0.001 ; one-way ANOVA followed by Tukey post-test). Teeth coated with whitening gel of the present invention began to darken significantly only after being immersed in red wine for 30 minutes, with progressive darkening at each subsequent time point.
  • AuraGlow, LLC Stamford, CT
  • both administered by a pen applicator both administered by a pen applicator.
  • the carbamide peroxide gel produced a significant increase in L * values at 60 minutes (P > 0.05, P ⁇ 0.05, P ⁇ 0.01 , P ⁇ 0.001 , P ⁇ 0.001 for progressive time points vs baseline, one way ANOVA followed by Tukey post-test).
  • a 65-year-old female patient presents with severe gum recession and enamel erosion, causing root as well as tooth sensitivity.
  • the patient has badly-stained teeth attributable to consumption of coffee (about 2-3 cups per day). Consequently, the patient experiences short, sharp pain in response to thermal, tactile and/or chemical stimuli - collectively a condition known as dentinal hypersensitivity.
  • Dentinal sensitivity is assessed clinically by a jet of air and with an exploratory probe on the exposed dentin, in a mesio-distal direction, examining all the teeth in the area in which the patient complained of pain.
  • the patient has been unable to tolerate in-office or at- home whitening treatments, including peroxide-based mouthwashes and
  • the extent of pain from the peroxide whitening treatment is described as "intolerable”.
  • the patient is able to use the whitening strips of the present invention on a once-daily basis (thirty minutes per day) for twenty-eight consecutive days without experiencing sensitivity. Throughout the 28-day treatment period, the patient continues to consume coffee (2-3 cups/day). Surprisingly, a visible whitening of the patient's teeth of seven (7) shades on the VITA TOOTHGUIDE 3D MASTER ® tooth shade grading system is observed.

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Abstract

Des compositions d'hygiène buccale comprennent essentiellement (i) un sel de mer, de préférence un sel de la mer Morte, et (ii) au moins deux huiles choisies dans le groupe constitué par l'huile de zeste de citron, l'huile de noix de coco, et l'huile de sauge, et les utilisations de telles compositions pour blanchir de manière visible les dents selon au moins trois nuances. Un système de dispensation pour le blanchiment des dents comprend une bande formée en combinant (i) un sel de la mer Morte et au moins deux huiles parmi l'huile de noix de coco, l'huile de zeste de citron et/ou l'huile de sauge et (ii) un ou plusieurs agents gélifiants/épaississants, la bande pouvant se conformer aux surfaces des dents et aux espaces interstitiels entre les dents, sans déformation permanente de celles-ci, et étant fixée de manière amovible à un revêtement antiadhésif.
PCT/US2018/045782 2017-08-31 2018-08-08 Compositions et méthodes d'hygiène buccale WO2019045978A1 (fr)

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Citations (2)

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US6669930B1 (en) * 2003-01-15 2003-12-30 Colgate Palmolive Company Liquid tooth whitening gel
US20060045851A1 (en) * 2004-09-02 2006-03-02 The Procter & Gamble Company Oral care composition comprising essential oils

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WO2019045978A8 (fr) 2019-09-19
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