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AU2002318865B2 - Dental compositions containing hyaluronic acid - Google Patents

Dental compositions containing hyaluronic acid Download PDF

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Publication number
AU2002318865B2
AU2002318865B2 AU2002318865A AU2002318865A AU2002318865B2 AU 2002318865 B2 AU2002318865 B2 AU 2002318865B2 AU 2002318865 A AU2002318865 A AU 2002318865A AU 2002318865 A AU2002318865 A AU 2002318865A AU 2002318865 B2 AU2002318865 B2 AU 2002318865B2
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AU
Australia
Prior art keywords
weight
composition
dental
hyaluronic acid
bleaching
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
AU2002318865A
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AU2002318865A1 (en
Inventor
Chris Loizou
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.)
Maestro Dental & Cosmetics Pty Ltd
Original Assignee
Maestro Dental & Cosmetics Pty
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Filing date
Publication date
Application filed by Maestro Dental & Cosmetics Pty filed Critical Maestro Dental & Cosmetics Pty
Priority to AU2002318865A priority Critical patent/AU2002318865B2/en
Publication of AU2002318865A1 publication Critical patent/AU2002318865A1/en
Assigned to MAESTRO DENTAL & COSMETICS PTY LTD reassignment MAESTRO DENTAL & COSMETICS PTY LTD Amend patent request/document other than specification (104) Assignors: MAESTRO COSMETICS INTERNATIONAL P/L
Application granted granted Critical
Publication of AU2002318865B2 publication Critical patent/AU2002318865B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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  • Cosmetics (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Description

AUSTRALIA
Patents Act 1990 COMPLETE
SPECIFICATION
STANDARD
PATENT
DENTAL BLEACHING
COMPOSITIONS
CONTAINING
HYALURONIC ACID DERIVATIVES The following statement is description of this invention, the best method of performing to me: a full including it known DENTAL BLEACHING COMPOSITIONS CONTAINING HYALURONIC ACID DERIVATIVES SThis invention relates to bleaching compositions intended for: The actual tooth bleaching process involved in both Take Home and In- Office systems.
The prevention of tooth sensitivity often encountered during bleaching by treating before and/or after bleaching.
0 Tooth sensitivity can be inherited, or caused by sickness, poor dental hygiene 00 or by poorly formulated peroxide bleaching agents. It is well known that bleaching systems will cause tooth whitening after exposure. The whitening action is believed to involve oxygen radicals released by the decomposing bleaching agent usually a peroxide. These radicals permeate into the tooth Sthrough the enamel and dentine attacking color-causing molecules and Soxidizing them into colourless ones, thus causing the whitening effect.
Although not proven it is believed that during the bleaching process some of the oxygen radicals reach the pulp chamber through open dentinal tubules irritating the very sensitive nerve endings known as the pain fibres. Many toothpastes contain desensitizers such as potassium nitrate to reduce sensitivity via chemical interference, directly resulting in a calming effect on the tooth. Patients that use these products often experience intense tissue bum as a side effect. Another method of reducing sensitivity is to use fluoride formulations to block the tubules. This method is often avoided simply because of fear of fluoride. Many believe that fluoride is being overused in everything including water. A distinct disadvantage of the desensitizing toothpaste is insufficient permeation time and low concentration.
These problems are overcome by the present invention which provides dental materials such as: Tooth bleaching gel for the Take Home Treatment Tooth bleaching gel for the In-Office Treatment.
Powder and liquid bleaching gel systems for the In-Office Treatment The prevention of tooth sensitivity often encountered during bleaching using either In-Office or Take Home Treatments.
Sodium Hyaluronate (also known as Hyaluronic Acid) is a natural substance S found in the space surrounding all cells with the highest concentrations found in the soft connective tissue such as the skin and cartilage. It plays an c important role in maintaining and regulating the water balance of tissue and facilitating the transport of nutrients and waste. As a major component of joint tissue, Hyaluronic Acid presence influences the hydration of cartilage which is necessary for its resilience and elastic strength.
Hyaluronic Acid is well known for its ability to stimulate production of healthy new tissue in half the time by increasing the blood supply and reducing inflammation. This ability is often referred to as healing power and it is utilized OC often in Orthopedics, and Ophthalmology. The Cosmetic Industry uses 0o Hyaluronic Acid because of its excellent property of moisturization to give Slubricity to the human skin, utilizing absorption and water holding properties.
The mechanism of the desensitizing properties of Hyaluronic Acid and its salts Sis easily understood after carefully studying the chemical structure of SHyaluronic Acid. It is a polysaccharide of alternating D-glucuronic acid and Nacetylglucosamine units.
Sodium Hyaluronate CAS Number 9067-32-7 When incorporated into aqueous dental compositions within the scope of this invention, hydrogen bond formation occurs between water molecules and carboxyl and N-acetyl groups resulting in a stiffer biopolymer of limited flexibility. This biopolymer is effectively a flexible membrane which ionically bonds to dentine thus sealing the tubules and preventing irritants from entering the pulpal chamber via the tubules. The ionic reaction involves the ionised carboxyl group bonding to both collagen and inorganic dentine in the same way as modem dentine adhesives and glass ionomers.
The Hyaluronic Acid is capable of forming these membrane even in very dilute solutions up to six litres of water may be found per gram of Hyaluronic Acid resulting in very viscous gels.
Hyaluronic Acid may be in the form of sodium or potassium salt.
The average molecular weight of the Hyaluronic Acid within the scope of this invention ranges from 70,000 Da to 5 MDa.
The Hyaluronic Acid may be combined with potassium nitrate and sodium fluoride for synergistic results.
In order to more clearly illustrate the parameters of the inventive dental composition within the scope of the present invention, the following examples are presented. The following examples are intended to be exemplary and should not be viewed as limiting to the scope of the invention.
Example 1 A Take Home tooth bleaching gel with desensitising action within the scope of the present invention was prepared by combining the following proportions:
O
IoD 00 00 Ingredients Water Sodium Hyaluronate AQUPEC HV-504 Sodium Hydroxide (40% Solution) Polyethylene Glycol 400 Hydrogen Peroxide Flavour Glycerine Welaht Percent 20.0 4.2 15.0 49.8 The Aquepec HV-504 was obtained from Sumitomo Seika Chiyodaku Tokyo.
Aquepec HV-504 was combined with glycerine before mixing with water. The Sodium Hyaluronate and polyethylene glycol were added to the homogeneous mixture next. After stirring the formulation was neutralized with sodium hydroxide. Flavour and hydrogen peroxide were added last.
The above formulation was applied to the upper arch of ten volunteers, one hour per day, for two weeks, with no evidence of any sensitivity and excellent tooth whitening results.
Example 2 A Take Home tooth bleaching gel with desensitising action within the scope of the present invention was prepared by combining the following proportions: Ingredients Water Sodium Hyaluronate Carbopol 974 P NF* Sodium Hydroxide (40% Solution) Polyethylene Glycol 400 Carbamide Peroxide Flavour Glycerine Potassium Nitrate Weight Percent 20.0 0.8 15.0 10.0 45.2 B.F. Goodrich Company
I
As for Example 1, the carbopol 974P NF was combined with glycerine prior to mixing with water. The Sodium Hyaluronate, polyethylene glycol 400 and potassium nitrate were added next. The flavour and carbamide peroxide were added last.
The above formulation was tested on the lower arch of the same volunteers as in Example 1, for one hour per day for two weeks with no evidence of any sensitivity and excellent tooth whitening results.
Example 3 A Take Home bleaching gel with desensitizing action as for Example 2 which also includes 1.0% sodium fluoride.
Example 4 An In-Office bleaching gel with desensitizing action within the scope of the present invention was prepared by combining the following proportions: Ingredients Water Sodium Hyaluronate Carbopol 940* Sodium Hydroxide (40% Solution) Polyethylene glycol 600 Hydrogen Peroxide Flavour Glycerine Potassium Nitrate Wavelength Sensitive Dye Weight Percent 20.0 0.6 15.0 35.0 18.8 0.1 B.F. Goodrich Company The above formulation was tested on the upper arch of ten new volunteers that were never exposed to bleaching before. This treatment involved four passes over 30 minutes. Each tooth was activated for 30 seconds with a Tungsten Halogen light. Again no sensitivity was reported with excellent tooth whitening results.
Example An In-Office powder and liquid bleaching gel with desensitizing action within the scope of the present invention was prepared by combining the following proportions: Powder Component Ingredients Degussa Aerosil 130 Sodium Hyaluronate Sodium Carbonate Wavelength Sensitive Dye Weight Percent 97.89 0.1 0.01 Liquid Component Ingredients Hydrogen Peroxide Water Weight Percent 35.0 65.0 The above composition was tested at a ratio of 0.3 powder weight, using the lower arch of the volunteers in Example 4.
whitening results were excellent and no sensitivity was reported.
2 liquid by The tooth Example 6 An In-Office Powder and Liquid bleaching gel with desensitizing action within the scope of the present invention was prepared by combining the following proportions: Powder Component Ingredients Degussa Aerosil 130 Sodium Hyaluronate Sodium Carbonate Potassium Nitrate Sodium Fluoride Wavelength Sensitive Dye Liquid Component Ingredients Hydrogen Peroxide Water Weight Percent 95.09 0.2 0.2 0.01 Weight Percent 35.0 65.0 The above composition was tested at a ratio of 0.3 powder: 2 liquid by weight using both arches of five new volunteers. The tooth whitening results were excellent and no sensitivity was reported.

Claims (4)

1. A dental bleaching composition that prevents sensitivity during the tooth bleaching process containing either Hydrogen peroxide or Carbamide peroxide in an amount ranging from 16%wt to 50%wt of the composition. This composition also contains Sodium Hyaluronate in an amount ranging from 0.05%wt to r
2. A dental bleaching composition as defined in claim 1 wherein the oO desensitizing agent is Potassium Hyaluronate is included in an amount 00 ranging from 0.005% by weight to about 6% by weight of the dental composition.
S3. A dental bleaching composition as defined in claim 1 further including Spotassium nitrate in an amount ranging from 0.1% by weight to 5% by cl weight of the dental composition.
4. A dental bleaching composition as defined in claim 1 further including sodium fluoride in an amount ranging from 0.1% by weight to 1% by weight of the dental composition. A dental bleaching composition as defined in claim 1 further including potassium nitrate in amount ranging from 0.1% by weight to 5% by weight and sodium fluoride in an amount ranging from 0.1% to 1% by weight.
AU2002318865A 2002-12-10 2002-12-10 Dental compositions containing hyaluronic acid Ceased AU2002318865B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002318865A AU2002318865B2 (en) 2002-12-10 2002-12-10 Dental compositions containing hyaluronic acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU2002318865A AU2002318865B2 (en) 2002-12-10 2002-12-10 Dental compositions containing hyaluronic acid

Publications (2)

Publication Number Publication Date
AU2002318865A1 AU2002318865A1 (en) 2004-06-24
AU2002318865B2 true AU2002318865B2 (en) 2007-08-02

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AU2002318865A Ceased AU2002318865B2 (en) 2002-12-10 2002-12-10 Dental compositions containing hyaluronic acid

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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MX2018011990A (en) 2016-04-01 2019-02-13 Procter & Gamble Oral care compositions containing potassium nitrate and peroxide.
US10758461B2 (en) 2016-04-01 2020-09-01 The Procter & Gamble Company Oral care compositions containing a gel network phase and potassium nitrate
BR112018069957A2 (en) 2016-04-01 2019-02-05 Procter & Gamble mouthwash compositions containing potassium nitrate gel nets
WO2017173198A1 (en) 2016-04-01 2017-10-05 The Procter & Gamble Company Oral care compositions containing a gel network phase
CN112107509B (en) * 2020-09-25 2022-11-15 山东华熙海御生物医药有限公司 Tooth whitening paste containing hyaluronic acid and preparation method thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002030380A1 (en) * 2000-10-13 2002-04-18 Block Drug Company, Inc. Dental compositions for hypersensitive teeth

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002030380A1 (en) * 2000-10-13 2002-04-18 Block Drug Company, Inc. Dental compositions for hypersensitive teeth

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Publication number Publication date
AU2002318865A1 (en) 2004-06-24

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Legal Events

Date Code Title Description
TC Change of applicant's name (sec. 104)

Owner name: MAESTRO DENTAL & COSMETICS PTY LTD

Free format text: FORMER NAME: MAESTRO COSMETICS INTERNATIONAL P/L

FGA Letters patent sealed or granted (standard patent)
MK14 Patent ceased section 143(a) (annual fees not paid) or expired