EP1539085A2 - Composition pour renforcer les materiaux a base d'apatite - Google Patents
Composition pour renforcer les materiaux a base d'apatiteInfo
- Publication number
- EP1539085A2 EP1539085A2 EP03769567A EP03769567A EP1539085A2 EP 1539085 A2 EP1539085 A2 EP 1539085A2 EP 03769567 A EP03769567 A EP 03769567A EP 03769567 A EP03769567 A EP 03769567A EP 1539085 A2 EP1539085 A2 EP 1539085A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- composition
- formula
- titanium
- fluorine
- ppm
- 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.)
- Withdrawn
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
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
- A61K8/29—Titanium; Compounds thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/02—Inorganic materials
- A61L27/12—Phosphorus-containing materials, e.g. apatite
Definitions
- composition for improving the physical-chemical characteristics of apatite-based materials has uses and process for its implementation
- the invention relates to a composition intended to improve the physico-chemical characteristics of materials based on natural or artificial apatite, in particular implants. It also relates to the use of titanium derivatives for the reinforcement of apatite-based materials, as well as to a process for the reinforcement of apatite-based materials.
- a large part of prostheses or implants for dental or medical use is made from titanium.
- titanium in the preparation of such prostheses or implants is well known. Its mechanical properties, its high resistance to corrosion and its lightness make it a material of choice for these applications.
- Titanium also shows very good compatibility with biological tissues. It generally does not alter the growth of osteoblasts, fibroblasts and gingival epithelial cells and is commonly used in the manufacture of dental or bone prostheses to replace failing tissues, including intervertebral discs and ear bones.
- the visible part of the tooth has a natural color which changes over time. This color depends in particular on the whiteness and transparency of the dental enamel, as well as the color of the underlying dentin. Enamel and dentin are generally whiter the less mineralized their main constituent, hydroxyapatite. Thus, in the absence of anomaly, the tooth is then a white-ivory color. However, different phenomena occur over time and have an influence on the color of the teeth.
- the enamel is also subject to erosion by acidic substances and by dental caries; to wear and mechanical abrasion. These factors contribute to decrease its shine.
- extrinsic stains can change the color of the tooth.
- certain foods such as coffee, tea, blueberries contain colored pigments which can attach to the surface of the teeth and alter their shade.
- Other substances such as tar contained in cigarettes or certain drug treatments can act in the same way and change the color of teeth.
- the object of the invention is to propose a new composition for reinforcing apatite-based materials, comprising compounds derived from titanium and fluorine, capable of modifying the structure of apatite.
- a first object of the invention therefore relates to such a composition.
- Another object of the invention relates to the use of titanium and fluorine derivatives for the reinforcement of apatite-based materials.
- Another object of the invention relates to a process for reinforcing apatite-based materials.
- Another object of the invention relates to a new use of compounds derived from titanium and fluorine, to protect materials based on apatite against coloring, especially extrinsic.
- apatite-based materials is understood to mean natural hydroxyapatites, in particular dental enamel, dentin, bones, as well as artificial ceramics based on calcium phosphate intended for medical applications, in particular dental implants, percutaneous or periodontal implantation devices, bone prostheses used in particular in orthopedic, maxillofacial or spinal surgery.
- composition intended to reinforce the apatite-based materials according to the invention is characterized in that it comprises at least one derivative of titanium and of fluorine corresponding to the general formula (I) below:
- composition according to the invention being further characterized in that it has, in the solubilized state, preferably in an aqueous medium, a pH less than or equal to 6.
- L ligands which can be used are in particular the benzoic acid derivatives, in particular hydroxy-2-benzoic acid of formula (IV) below and its derivatives:
- R represents a ligand of formula (II)
- R represents a ligand of formula (II)
- They can therefore exist in the form of enantiomers or diastereoisomers. These enantiomers, diastereoisomers, as well as their mixtures, including racemic mixtures, form part of the invention.
- R represents a ligand of formula (II)
- R represents a ligand of formula (II)
- Such addition salts form part of the invention.
- salts are advantageously prepared with pharmaceutically acceptable acids, but the salts of other acids which are useful, for example for the purification or the isolation of the compounds, also form part of the invention.
- R represents a ligand of formula (II)
- R represents a ligand of formula (II)
- hydrates or solvates namely in the form of associations or combinations with one or more molecules of water or with a solvent.
- Such hydrates and solvates are also part of the invention.
- a first example of a compound derived from titanium and fluorine according to the invention, obtained by using hydroxy-2-benzoic acid as ligand L, is the compound represented by formula (III) below:
- R represents a mineral compound
- K 2 TiF 6 potassium hexafluorotitanate of formula K 2 TiF 6 .
- the titanium and fluorine derivatives in which R represents a ligand L of formula (II) above can be prepared according to the method described in document WO 0105797.
- compositions of the invention have a titanium content varying from approximately 10 to approximately 1000 ppm, preferably approximately 300 ppm and a fluorine ion content varying from approximately 50 to approximately 1500 ppm, preferably approximately 240 ppm.
- compositions according to the invention further comprise an additional fluorinated compound, in particular a fluorine salt, for example sodium fluoride, sodium monofluorophosphate.
- a fluorine salt for example sodium fluoride, sodium monofluorophosphate.
- This additional fluorinated compound is present in the compositions of the invention in an amount varying from about 50 to about 1500 ppm, preferably from about 100 to about 500 ppm.
- compositions of the invention have, in the solubilized state, a pH less than or equal to 6, preferably between approximately 5 and approximately 1, depending on the mode of administration of the composition.
- the compositions of the invention are preferably dissolved in an aqueous medium, but can also be carried out, depending in particular on the titanium and fluorine derivative used, in an organic solvent such as ethanol.
- compositions of the invention allow the substitution of calcium atoms present in the apatite by titanium and the substitution of hydroxyl groups, bicarbonates or impurities present in the apatite by fluorine.
- the invention can be applied not only to dental enamel and to dentin in compositions for oral use, but also to other natural apatites, for example bone tissue, or artificial, by example of ceramics.
- compositions of the invention can be presented in various usual forms for administration in a clinical situation (topical route) or for the preparation of artificial apatites.
- compositions of the invention may be in the form, in the case of an oral application, of a toothpaste, a powder to be diluted, a spray, a gum chew, a lozenge to suck, a dental gel, an oral implant such as a patch, a mouthwash, a solution.
- a toothpaste a powder to be diluted
- a spray a gum chew
- a dental gel an oral implant such as a patch, a mouthwash
- a solution for application to the bone or to an artificial apatite
- the compositions of the invention may be in the form of a solution, a gel, a paste, a powder to be diluted.
- the forms for oral application can contain anionic, amphoteric, zwitterionic, cationic or nonionic surfactants. They may also include thickening agents, cohesion agents, sweetening, humectant or refreshing agents, preserving agents, colorants, whitening agents, flavoring or flavoring agents, essential plant oils, plasticizing agents, peptizing agents, anti-tartar agents, agents that inhibit the production of volatile sulfur compounds such as zinc salts and complexes, cicatrizers, anti-bleeding agents, polishing agents, anti-plaque agents such as chlorhexidine, hexetidine, cetylpyridinium chloride, triclosan and / or enzymes such as dextranase, mutanase, lysozymes, lactoferrin or peroxidases.
- thickening agents cohesion agents, sweetening, humectant or refreshing agents, preserving agents, colorants, whitening agents, flavoring or flavoring agents, essential plant oils, plasticizing agents,
- a first example of a composition according to the invention in the form of a powder to be diluted extemporaneously for topical administration, comprises the following elements, expressed in percentages by weight relative to the total weight of the composition:
- Composition A A:
- composition according to the invention in the form of a powder to be diluted extemporaneously for the preparation of a solution for reinforcing artificial apatites, comprises the following elements, expressed in percentages by weight relative to the total weight of the preparation:
- Composition B is a composition of Composition B:
- the pH of the composition when used to reinforce an artificial apatite, the pH of the composition, once dissolved, may be lower than in the case of topical use.
- the composition of the invention has in solution a pH less than or equal to 6, preferably between approximately 4 and approximately 1.
- Most of the compounds derived from titanium and from fluorine which can be used in the invention, for example the compound of formula (III), are acid in aqueous solution. In certain cases, it is however necessary to adjust the pH of the composition, so that it is less than or equal to 6. In other cases, it may also be necessary to increase the pH, when the composition has the solubilized state too strong an acid character.
- the pH of the composition can be adjusted, as a function of the relative acidity of the titanium and fluorine derivatives used, with additional acid or alkaline agents, as the case may be. Such agents are known in themselves for this use in compositions intended for administration to humans.
- acid agents which can be used are in particular citric acid, hydrochloric acid, lactic acid, phosphoric acid, tartaric acid and alkaline agents which can be used are in particular sodium hydroxide, monoethanolamine, diethanolamine, triethanolamine.
- compositions comprising at least one derivative of titanium and of fluorine for the reinforcement of materials based on apatite.
- the composition comprising at least one derivative of titanium and of fluorine is as defined in the above.
- the invention is particularly useful for strengthening apatite or natural or artificial hydroxyapatite as defined in the foregoing.
- the invention also relates to a process for reinforcing apatite-based materials.
- the method of the invention is characterized in that it comprises the step consisting in applying to the apatite-based material a composition comprising a derivative of "" titanium and of fluorine ⁇ as defined in the above, said composition having, in the dissolved state, a pH less than or equal to 6.
- a step of treatment with an acid or demineralizing compound can be carried out prior to the application of the composition.
- this treatment step is carried out using an acid or demineralizing agent such as citric acid, lactic acid, phosphoric acid, tartaric acid.
- the invention also relates to the use of compounds derived from titanium and fluorine, to protect materials based on apatite against colorations, especially extrinsic.
- TiFxRy (I) in which x is an integer varying from 1 to 6 and y is 0, 1 or 2, and R represents: - a compound chosen from K, Na or NH 4 , or a ligand L of formula (II) below:
- composition for buccal use defined above has, in the solubilized state, preferably in an aqueous medium, a pH less than or equal to 6.
- L ligands which can be used are in particular those described in the foregoing, in particular the compounds of formula (IV), (V), (VI), (VII), (VIII) and their derivatives.
- compositions for buccal use which can be used to protect apatite-based materials against coloring are as defined in the above, in particular as regards their content of titanium, fluorine, the excipients which can be used, their pH, their form of administration.
- the invention also relates to a process for protecting against coloring of apatite-based materials.
- the method of the invention is characterized in that it comprises the step consisting in applying to the apatite-based material a composition comprising a titanium and fluorine derivative as defined in the above, said composition having, in the solubilized state, a pH less than or equal to 6.
- Composition 1 aqueous solution of potassium hexafluorotitanate (at 200, 400 or 1000 ppm of titanium) for local application.
- Composition 2 aqueous solution of the compound of formula III (at 200, 300, 400 or 1000 ppm of titanium) for local application.
- compositions (pH between 1 and 6) are brought into contact with commercially available hydroxyapatite powder.
- Y1 and Y2 hydroxyapatite treated with composition 2 (solutions at 200 and 400 ppm of titanium, respectively)
- composition 1 to 1000 ppm of titanium Y3 composition 2 to 1000 ppm of titanium NaF: sodium fluoride with fluorine content of 1000 ppm.
- the enamel located under the treated half is examined by scanning electron microscopy. Its titanium composition was determined by elemental analysis, by means of a ray photoelectron spectroscope ⁇ X. The results show a modified hydroxyapatite which is dental enamel, due to the incorporation of titanium in the long the structure.
- composition - aqueous solution of the compound of formula III at 0.2% (corresponding to 0.036% of titanium) The solution is used in local application, at a pH around 4.6.
- a lysine precursor is used as the coloring model in the presence of a reducing sugar, which produces brown-colored melanoids by reaction.
- aqueous solution containing 100 mM of lysine and 100 mM of reducing sugar is prepared.
- the aqueous solution of the compound of formula III prepared above is mixed (50/50 v / v mixture) with the solution of lysine and reducing sugar, balanced at 60 ° C for 3 days, then diluted (1/1 v / v) either in water (solution 1) or in artificial saliva (solution 2).
- Control mixtures in which the solution of the compound of formula III is replaced by water are also prepared in the same way (solutions 3 and 4, respectively).
- the appearance of the melanoid chromophore in the mixture is measured by spectrophotometry for 15 days.
- the absorbance is measured at 500 nm. It appears that, in vitro, the solution containing the titanium and fluorine derivative inhibits the formation of colored melanoid chromophore from lysine and reducing sugar.
- Example 1 To evaluate the effects of the treatment by local application, freshly extracted human teeth are brought into contact with the same solution as in Example 1. An experimental window is defined on each tooth and the remaining zone is masked under wax. The teeth are then exposed to treatment with the same solution as in Example 1.
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Veterinary Medicine (AREA)
- Chemical & Material Sciences (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Epidemiology (AREA)
- Inorganic Chemistry (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Medicinal Chemistry (AREA)
- Dermatology (AREA)
- Birds (AREA)
- Cosmetics (AREA)
- Materials For Medical Uses (AREA)
- Dental Preparations (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Abstract
Description
Claims
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0211062A FR2844199B1 (fr) | 2002-09-06 | 2002-09-06 | Composition pour ameliorer les caracteristiques physico- chimiques de materiaux a base d'apatite, son utilisation et procede pour sa mise en oeuvre |
| FR0211062 | 2002-09-06 | ||
| FR0303472 | 2003-03-21 | ||
| FR0303472A FR2852511B1 (fr) | 2003-03-21 | 2003-03-21 | Utilisation de derives de titane et de fluor pour la protection contre la coloration des materiaux a base d'apatite, procede de protection contre la coloration des materiaux a base d'apatite |
| PCT/FR2003/002643 WO2004021970A2 (fr) | 2002-09-06 | 2003-09-04 | Composition pour renforcer les materiaux a base d’apatite |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1539085A2 true EP1539085A2 (fr) | 2005-06-15 |
Family
ID=31979941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03769567A Withdrawn EP1539085A2 (fr) | 2002-09-06 | 2003-09-04 | Composition pour renforcer les materiaux a base d'apatite |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20050287085A1 (fr) |
| EP (1) | EP1539085A2 (fr) |
| AR (1) | AR041149A1 (fr) |
| AU (1) | AU2003278258A1 (fr) |
| WO (1) | WO2004021970A2 (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101110720B1 (ko) * | 2010-04-29 | 2012-02-16 | 주식회사셀세이프 | 디히드록시벤조산 유도체를 포함하는 골이식용 또는 골충진용 조성물 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5835486B2 (ja) * | 1978-09-02 | 1983-08-03 | 株式会社ビ−ブランド・メディコ−デンタル | う蝕の予防および進行抑制用組成物 |
| US4503157A (en) * | 1982-09-25 | 1985-03-05 | Ina Seito Co., Ltd. | Sintered apatite bodies and composites thereof |
| DE3301122A1 (de) * | 1983-01-14 | 1984-07-19 | Johannes-Friedrich Dr. 2000 Hamburg Osborn | Keramischer knochenersatzwerkstoff und verfahren zu seiner herstellung |
| JPS61128409A (ja) * | 1984-11-27 | 1986-06-16 | 株式会社村田製作所 | 誘電体磁器組成物 |
| US4601898A (en) * | 1985-03-27 | 1986-07-22 | Beecham Inc. | Aqueous solution containing TiF4 and chelating agent |
| US4601899A (en) * | 1985-03-27 | 1986-07-22 | Beecham Inc. | Hydrous toothpaste containing TiF4 and chelating agent |
| DE19830795A1 (de) * | 1998-07-09 | 2000-01-13 | Klaus Heckmann | Poröse Keramiken |
| FR2796383B1 (fr) * | 1999-07-16 | 2002-06-14 | Sanofi Synthelabo | Composes derives de titane, leur preparation et leur utilisation |
-
2003
- 2003-09-04 US US10/526,581 patent/US20050287085A1/en not_active Abandoned
- 2003-09-04 EP EP03769567A patent/EP1539085A2/fr not_active Withdrawn
- 2003-09-04 WO PCT/FR2003/002643 patent/WO2004021970A2/fr not_active Ceased
- 2003-09-04 AU AU2003278258A patent/AU2003278258A1/en not_active Abandoned
- 2003-09-04 AR ARP030103210A patent/AR041149A1/es not_active Application Discontinuation
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2004021970A2 * |
Also Published As
| Publication number | Publication date |
|---|---|
| AR041149A1 (es) | 2005-05-04 |
| US20050287085A1 (en) | 2005-12-29 |
| WO2004021970A3 (fr) | 2004-05-06 |
| WO2004021970A2 (fr) | 2004-03-18 |
| AU2003278258A1 (en) | 2004-03-29 |
| AU2003278258A8 (en) | 2004-03-29 |
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Legal Events
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| RTI1 | Title (correction) |
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