EP0944377A1 - Bioresorbierbare polymerisationsprodukte aus strahlungshärtbaren bindemittelsystemen - Google Patents
Bioresorbierbare polymerisationsprodukte aus strahlungshärtbaren bindemittelsystemenInfo
- Publication number
- EP0944377A1 EP0944377A1 EP97912224A EP97912224A EP0944377A1 EP 0944377 A1 EP0944377 A1 EP 0944377A1 EP 97912224 A EP97912224 A EP 97912224A EP 97912224 A EP97912224 A EP 97912224A EP 0944377 A1 EP0944377 A1 EP 0944377A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- polymerization
- bioresorbable
- polymerization products
- tooth
- dental
- 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- Withdrawn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
- 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
- A61L27/14—Macromolecular materials
- A61L27/16—Macromolecular materials obtained by reactions only involving carbon-to-carbon unsaturated bonds
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K6/00—Preparations for dentistry
- A61K6/20—Protective coatings for natural or artificial teeth, e.g. sealings, dye coatings or varnish
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K6/00—Preparations for dentistry
- A61K6/80—Preparations for artificial teeth, for filling teeth or for capping teeth
- A61K6/884—Preparations for artificial teeth, for filling teeth or for capping teeth comprising natural or synthetic resins
- A61K6/887—Compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K6/00—Preparations for dentistry
- A61K6/80—Preparations for artificial teeth, for filling teeth or for capping teeth
- A61K6/884—Preparations for artificial teeth, for filling teeth or for capping teeth comprising natural or synthetic resins
- A61K6/891—Compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P1/00—Drugs for disorders of the alimentary tract or the digestive system
- A61P1/02—Stomatological preparations, e.g. drugs for caries, aphtae, periodontitis
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F222/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a carboxyl radical and containing at least one other carboxyl radical in the molecule; Salts, anhydrides, esters, amides, imides, or nitriles thereof
- C08F222/10—Esters
- C08F222/1006—Esters of polyhydric alcohols or polyhydric phenols
- C08F222/102—Esters of polyhydric alcohols or polyhydric phenols of dialcohols, e.g. ethylene glycol di(meth)acrylate or 1,4-butanediol dimethacrylate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/06—Unsaturated polyesters
- C08L67/07—Unsaturated polyesters having terminal carbon-to-carbon unsaturated bonds
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S522/00—Synthetic resins or natural rubbers -- part of the class 520 series
- Y10S522/908—Dental utility
Definitions
- the invention relates to a process for the preparation of bioresorbable polymerization products, characterized in that monomeric compounds consisting essentially of compositions of the formula I.
- R 1 , R 2 , R 3 each independently of one another - (CH 2 ) -, -CH (CH 3 ) -, -CH 2 -CH -, -CH 2 -CH 2 -CH -, -CH (CH 3 ) - CH 2 -, -CH 2 -CH (CH 3 ) -, 1, 2-, 1, 3- or 1, 4-phenylene,
- R 4 , R 4 , R 4 "each independently of one another H or CH 3 , i, j, k each independently of one another 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 or 10 and n 0 or 1 mean
- the invention also relates to a process, characterized in that the compositions of the formula I are polymerized at temperatures between 0 and 80 ° C.
- Another object of the invention is a process, characterized in that the polymerization of the compositions of the formula I are carried out with the addition of a starter and / or an accelerator.
- the invention also relates to a bioresorbable polymerization product based on ethylene glycol and / or glycerol oligoester (meth) acrylates, obtainable by one of the processes mentioned.
- Polymerizable binder systems based on (meth) acrylic acid esters on polyester oligomer chains from hydroxycarboxylic acids are e.g. known from EP 0 085 944 and EP 0 086 401.
- the object of the invention was to provide bioabsorbable polymers which are easy to produce, in particular those which can be used for the production of bone and denture materials.
- (meth) acrylic acid esters as monomers for use in dental materials is e.g. described in EP 0 206 074.
- Prefabricated molded articles (inserts) based on ethylenically polymerizable materials are e.g. disclosed in DE 43 39 399.
- Other molded articles with a predetermined pore structure based on hydroxylapatite are e.g. described in DE 42 05 969.
- a method for producing tooth fillings from light-curing plastic is described in DE 40 30 168.
- Photopolymerizable compositions for dental treatment based on phenylene, diphenylene or bridged phenylene are disclosed in DE 21 26 419.
- Other photopolymerizable compositions with ketone additives are described in EP 0 090493. It has been found that the compositions of the formula I can be polymerized very easily by irradiation, and the polymer products thus obtained, in addition to their bioresorbability or biodegradability, have very valuable properties in processing products such as dental enamel, tooth inlays or porous moldings.
- bioresorbable polymerization products based on ethylene glycol and / or glycerol oligoester (meth) acrylates according to claim 4 can be used in dental and bone surgery.
- the invention accordingly relates to a process for the preparation of bioresorbable polymerization products, characterized in that monomeric compounds, consisting essentially of compositions of the formula I, are polymerized by means of electromagnetic radiation.
- the radiation used for the polymerization is in the range from 800 nm (near infrared / visible light) to 10 "4 nm ( ⁇ -rays or X-rays).
- the range of visible and UV light in the range from 800 nm to is particularly preferred 1 nm, very particularly preferred is the range from 800 to 50 nm, whereas another preferred range has wavelengths from 1 to 10 "4 nm.
- the ethylene glycol or glycero-oligoester (meth) acrylates are preferably formed from one mole of ethylene or glycerol, 2 to 10, in particular 2 to 6 moles of monohydroxy-monocarboxylic acid and 2 to 3, preferably 2 moles of methacrylic acid.
- Preferred monohydroxy-monocarboxylic acids are glycolic acid, hydroxypropionic acid, hydroxybutyric acid and / or hydroxybenzoic acid, lactic acid is very particularly preferred.
- preferred compositions of the formula I are the ethylene glycol and / or glyceroligolactide bismethacrylates.
- the polymerization takes place at temperatures from 0 to 80 ° C., preferably between 10 and 60 ° C., very particularly preferably between 20 and 40 ° C.
- Initiators can also be added. Suitable initiators are, for example, boron compounds as described in EP 0 085 944.
- the invention further relates to a tooth enamel based on bioresorbable polymerization products according to claim 4, obtainable a) by mixing the monomeric composition with 0.05 to 4% by weight camphorquinone, b) applying the mixture to the tissue or tooth to be lacquered and c ) Polymerization by means of electromagnetic radiation in the range from 50 to 800 nm.
- the chemical structure of the dental enamel according to the invention is absorbable. For this reason, it is particularly suitable for the treatment of periodontitis, which is characterized by gingival pockets, formation of populated plaques and finally with increasing loss of the periodontal ligament, which represents the connection between the root cement and the alveolar compartment.
- periodontitis which is characterized by gingival pockets, formation of populated plaques and finally with increasing loss of the periodontal ligament, which represents the connection between the root cement and the alveolar compartment.
- the loss of this tooth retention apparatus leads to loosening and loss of the tooth.
- the current status of dental treatment consists of the debridement of the space formed between the alveolar compartment and the tooth root, smoothing of the root surface and sewing in a film or membrane (eg Gore membrane) for the purpose of preventing connective tissue ingrowth from the gingiva in the sense of the controlled Tissue regeneration.
- a film or membrane eg Gore membrane
- the dental lacquer according to the invention serves to anchor the film or membrane occlusively in the alveolar compartment or the lacquer is introduced into the defect in the sense of a placeholder for controlled tissue regeneration.
- a rapidly resorbable material such as a bone seal
- a rapidly resorbable material can first be introduced into the alveolar compartment and then the dental enamel applied and brought to the polymerization.
- Antibiotics or disinfectants can be mixed into the tooth enamel to improve the root cement formation by the odontoblasts calcium salts, against bacterial colonization.
- Another option is to mix in elastase inhibitors.
- elastase inhibitors In periodontal diseases, high concentrations of elastase originating from polymorphonuclear granulocytes are found in the sulcus fluid. These high elastase concentrations are partly responsible for the fact that tissue of the periodontal tooth holder is degraded and the attachment loss progresses.
- Sodium monofluorophosphate, amine fluorides and / or other fluorine donors can also be added.
- Tooth enamel containing amine fluoride or local anesthetics is applied in order to make the tooth necks less sensitive or to harden the tooth necks through the release of amine or other fluorides.
- these tooth varnishes have a short shelf life on the tooth surface, usually only a few hours.
- camphorquinone By mixing camphorquinone, the tooth enamel is hardened more quickly.
- the amounts to be mixed are preferably between 0.05 and 4% by weight camphorquinone, in particular between 0.1 and 0.5% by weight.
- the polymerization takes place e.g. by irradiation with visible or UV radiation at wavelengths of 800 to 50 nm, preferably between 500 and 300 nm.
- Dental varnishes with different viscosities can be obtained by admixing, for example, glycero-oligoesters and / or glycero-oligoester (meth) acrylates to ethylene glycol and / or glycero-oligoester (meth) acrylates, which are already mixed with camphorquinone.
- glycero-oligolactides which are formed from one mole of glycerol and 6 to 14 moles of lactic acid, are preferably admixed to give ethylene glycol oligolactide bismethacrylates.
- Glycero-oligolactides (1: 8 to 1:12), which consist of one mole of glycerol and 8 to 12 moles of lactic acid, are very particularly preferred as the binders to be mixed.
- the amounts to be mixed are preferably between 20 and 60% by weight of glycero-oligolactide, in particular between 30 and 50% by weight.
- the invention further relates to tooth inlays based on initially bioresorbable polymerization products according to claim 4, obtainable a) by mixing the monomeric composition with 10 to
- the inlays according to the invention have no such shrinkage.
- the inlays can be obtained by mixing ethylene glycol oligoester (meth) acrylate with 10 to 80% by weight of hydroxylapatite, preferably with 20 to 70% by weight.
- the highly viscous mass before the polymerization is introduced into a dental impression material (negative impression) and cured by ⁇ -radiation with wavelengths ⁇ 10 nm, especially in the range from 1 to 10 ⁇ nm, preferably in the range from 10 "1 to 10 " 3 nm .
- the corresponding intensities (radiation densities) for the radiation sources to be used are 10 to 60 kGray, preferably 20 to 50 kGray [rem / cm 2 ].
- the resulting bodies can be machined by sawing or drilling.
- the inlays obtained in this way can then be introduced into the prepared tooth and, for example, by using a Glue in the bone glue consisting, for example, of ethylene glycol oligolactide bis methacrylate and a starter.
- the invention furthermore relates to implantable molded articles with an interconnecting pore system based on bioresorbable polymerization products according to claim 4, obtainable a) by introducing the monomeric composition into a porous matrix and b) polymerization by means of electromagnetic radiation ⁇ 10 nm.
- the forms according to the invention are included as bone substitute material
- Placeholder function ideally suited, since the trabeculae forming the pore system can serve as a guide for the newly formed bone. After a certain time, the polymer is completely broken down, so that only newly formed bone remains, which can then optimally adapt to the corresponding load directions of the bone.
- the shaped bodies with interconnecting pore system are produced by using matrices, e.g. Sugar cubes are introduced into a silicone mold and these are then impregnated with the monomeric ethylene glycol and / or glycerol oligoester (meth) acrylate.
- the monomer is polymerized by irradiation with ⁇ radiation.
- ⁇ -radiation with wavelengths ⁇ 10 nm is used, particularly in the range from 1 to 10 ⁇ nm, preferably in the range from 10 "1 to 10 " 3 nm.
- the corresponding radiation sources are used
- the polymerized sugar cubes can then be processed for further shaping or the sugar can then be removed by treatment with water or alcohol.
- the invention further relates to the use of bioresorbable polymerization products according to claim 4 for the production of dental lacquers, tooth inlays and / or implantable moldings.
- ethylene glycol oligolactide bis methacrylate 50 ml is mixed with 1% camphorquinone for 20 minutes with stirring, protected from light, and poured into an amber glass bottle.
- the mixture is applied to the tooth and with a light pen, e.g. from Kulzer, Translux EC, 200 watts hardened 2 x 30 seconds.
- the resulting polymer layer on the tooth surface is very strong and mechanically resistant to abrasion.
- Example 1 For a periodontitis treatment on beagle dogs, highly viscous to plastically deformable "tooth enamel" systems are suitable.
- the mixture prepared in Example 1 is mixed with 40% by weight glycero-oligolactide (1: 8), which was previously heated to 50 ° C., and mixed.
- a sugar cube is placed in a silicone mold that is designed so that the edges of the sugar cube are surrounded on all sides by the silicone. is closed, but the top and bottom are left open.
- a vacuum By applying a vacuum to the underside of the silicone mold, after 5 ml of ethylene glycol oligolactide bismethacrylate has been applied to the top of the sugar cubes, the sugar is sucked into and through the sugar.
- the sugar cube loaded in this way can be stored at 0 to 4 ° C.
- the polymerization is carried out by irradiating the material at 25 kGy.
- the loading technique can also be modified in such a way that the cube sugar enclosed in the silicone mold is first loaded with 3 ml of 60 ° C. hot ethylene glycol oligolactide bis methacrylate, which contains 8% by weight of 9-BBN (borobicyclononan). 5 ml of ethylene glycol oligolactide bis methacrylate are then sucked through.
- 9-BBN boric acid
- Another way of loading is by inserting several sugar cubes in an excess of adhesive monomer in a desiccator and applying a vacuum.
- the polymerized sugar cubes were tested for compressive strength using an Instron testing machine. Moldings in which the sugar matrix was not dissolved out by water or alcohol showed compressive strengths of 30 MPa; in the case of moldings with the matrix released, the compressive strength was 3 MPa.
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19646782 | 1996-11-13 | ||
DE19646782A DE19646782C2 (de) | 1996-11-13 | 1996-11-13 | Bioresorbierbare Polymerisationsprodukte aus strahlungshärtbaren Bindemittelsystemen |
PCT/EP1997/006029 WO1998020839A1 (de) | 1996-11-13 | 1997-10-31 | Bioresorbierbare polymerisationsprodukte aus strahlungshärtbaren bindemittelsystemen |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0944377A1 true EP0944377A1 (de) | 1999-09-29 |
Family
ID=7811469
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97912224A Withdrawn EP0944377A1 (de) | 1996-11-13 | 1997-10-31 | Bioresorbierbare polymerisationsprodukte aus strahlungshärtbaren bindemittelsystemen |
Country Status (7)
Country | Link |
---|---|
US (1) | US6313189B1 (de) |
EP (1) | EP0944377A1 (de) |
JP (1) | JP2001505196A (de) |
AU (1) | AU4949597A (de) |
DE (1) | DE19646782C2 (de) |
WO (1) | WO1998020839A1 (de) |
ZA (1) | ZA9710206B (de) |
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JPH08291016A (ja) * | 1995-04-17 | 1996-11-05 | G C:Kk | 光重合性義歯床用裏装材 |
DE19520016C2 (de) * | 1995-05-26 | 1997-04-30 | Ivoclar Ag | Photochrome Dentalmaterialien |
DE19617931C5 (de) * | 1996-04-26 | 2010-07-22 | Ivoclar Vivadent Ag | Verwendung eines gefüllten und polymerisierbaren Materials als Dentalmaterial |
DE69725380T2 (de) * | 1996-05-16 | 2004-08-26 | Teijin Seiki Co. Ltd. | Lichthärtbare Zusammensetzung, Verfahren zur Herstellung eines lichtgehärteten geformten Gegenstands, Form und Verfahren zum Vakuumdruckgiessen und Urethanacrylat |
US6057383A (en) * | 1996-06-18 | 2000-05-02 | Ivoclar Ag | Dental material based on polymerizable waxes |
ATE254441T1 (de) | 1996-09-30 | 2003-12-15 | Degudent Gmbh | Polymerisierbarer dentalwerkstoff und verwendung von apatit-füllstoffen im dentalwerkstoff |
US5969000A (en) * | 1997-01-17 | 1999-10-19 | Jeneric Pentron Incorporated | Dental resin materials |
US5925689A (en) * | 1997-06-20 | 1999-07-20 | Scientific Pharmaceuticals, Inc. | Adhesive coatings curable by light |
US5980253A (en) * | 1998-01-12 | 1999-11-09 | 3M Innovative Properties Company | Process for treating hard tissues |
-
1996
- 1996-11-13 DE DE19646782A patent/DE19646782C2/de not_active Expired - Fee Related
-
1997
- 1997-10-31 US US09/297,587 patent/US6313189B1/en not_active Expired - Fee Related
- 1997-10-31 EP EP97912224A patent/EP0944377A1/de not_active Withdrawn
- 1997-10-31 WO PCT/EP1997/006029 patent/WO1998020839A1/de not_active Application Discontinuation
- 1997-10-31 AU AU49495/97A patent/AU4949597A/en not_active Abandoned
- 1997-10-31 JP JP52210498A patent/JP2001505196A/ja not_active Ceased
- 1997-11-12 ZA ZA9710206A patent/ZA9710206B/xx unknown
Also Published As
Publication number | Publication date |
---|---|
AU4949597A (en) | 1998-06-03 |
WO1998020839A1 (de) | 1998-05-22 |
US6313189B1 (en) | 2001-11-06 |
ZA9710206B (en) | 1998-07-28 |
DE19646782C2 (de) | 2000-05-25 |
JP2001505196A (ja) | 2001-04-17 |
DE19646782A1 (de) | 1998-05-28 |
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