Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K6/00—Preparations for dentistry
  • A61K6/60—Preparations for dentistry comprising organic or organo-metallic additives
  • A61K6/69—Medicaments
• • 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
  • A61K6/30—Compositions for temporarily or permanently fixing teeth or palates, e.g. primers for dental adhesives
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K6/00—Preparations for dentistry
  • A61K6/70—Preparations for dentistry comprising inorganic additives
  • A61K6/71—Fillers
  • A61K6/76—Fillers comprising silicon-containing compounds
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K6/00—Preparations for dentistry
  • A61K6/70—Preparations for dentistry comprising inorganic additives
  • A61K6/71—Fillers
  • A61K6/77—Glass
• • 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
  • A61K6/802—Preparations for artificial teeth, for filling teeth or for capping teeth comprising ceramics
  • A61K6/818—Preparations for artificial teeth, for filling teeth or for capping teeth comprising ceramics comprising zirconium oxide
• • 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
  • A61K6/90—Compositions for taking dental impressions

Definitions

• Antimicrobial dental materials especially for prevention
• the invention relates to antimicrobial dental materials, in particular for the prevention of plaque accumulation.
• Polymeric dental materials in particular based on acrylate / methacrylate, which are introduced for permanent retention in the oral cavity tend to plaque colonization on the material surface in the case of a lack of oral hygiene.
• Plaque is composed of various bacteria and yeasts which are fixed by proteins and carbohydrates on surfaces such as e.g. Anchor teeth or dental materials. On this first bacterial layer then more bacteria can settle and thus form a three-dimensional colony. Due to certain substances that are released by the bacteria, this "biofilm” is almost unassailable for antibiotics.
• plaque in the advanced stage also leads to a strong discoloration, so that it comes to aesthetic impairments.
• microbicides a z. B. on poly (ethylene glycols) based, protein-repellent surface or a hydrophobic coating of the dental materials, which impedes the adhesion of the bacteria on the material.
• quaternary ammonium salts as antimicrobial additives has long been known.
• a silane with quaternary ammonium groups is produced as a functional group by Microbeshield and marketed for the antibacterial treatment of filters, textiles and wound dressings.
• GB 1433303 A describes filler particles for plastics which are silanized and coated with quaternary ammonium salts. So treated Diatomaceous earths or fumed silicas are proposed, for example, for use in wood coatings, sealants, catheters or textile fibers.
• additives based on cationic oligomers are known (Akacid®, Fa. PoC) and silver-containing additives [silver-containing glasses, salts, zeolites (US Pat. No. 6,436,422 B1)].
• silver-containing additives silver-containing glasses, salts, zeolites (US Pat. No. 6,436,422 B1).
• JP 10025218 A describes inorganic fillers coated with a polymer layer containing antimicrobial groups.
• the layer is formed by polymerization of corresponding (meth) acrylate monomers carrying phosphonium or quaternary ammonium groups.
• dental fillers are coated with antimicrobial polysaccharides.
• Such coated with a polysaccharide filler are coated with another polymer (page 4, paragraph 0034).
• a CC double bond is introduced to allow a polymerisation into the polymer (page 4, paragraph 0037).
• the chitosan is correspondingly covalently bound to the packing surface (page 5, paragraph 0047).
• the object of the present invention is to provide a method with which the settling of plaque on dental materials can be permanently prevented or delayed without having a negative influence on the product properties of the dental material.
• the following core requirements are important, several of which should be fulfilled:
• the material must not show micropores and macropores after release of the active substance. This is important for aesthetics as well as because any cracking is a starting point of colonization with plaque.
• the active substance should be released in a retarding manner.
• the active substance should be colorless and odorless.
• the active substance should have such a high release rate that antimicrobial efficacy is given, but no toxic or irritating / sensitizing effects occur.
• the active substance must not interfere with the polymerisation of the product and negatively influence the material properties, no phase separation (softening effect) may occur.
• the active substance must have only a low-probability resistance to the typical oral germs.
• compositions according to claim 1 The object is achieved by compositions according to claim 1. Further embodiments can be found in the dependent claims 2-14.
• Preferred active ingredients are as follows: from: Majic Todt, Ante, dissertation in 2003, "Testing of Lavasept ® on antiseptic activity and plaque inhibition"
• compositions of the invention are suitable for use in or as: filling com posites, veneering composites, denture materials, artificial teeth, impression compounds, protective lacquers, fissure sealants, dentin bonding as well as for veterinary hoof material.
• the active ingredient is expediently dissolved in a suitable solvent, the solution is mixed with the inorganic filler or organic polymer and the solvent is subsequently removed completely.
• Radical polymerizable monomers from the group of methacrylates and acrylates are predominantly used in dental composites according to the invention:
• Known viscous resins / monomers suitable for dental materials are polyurethane dimethacrylate (PUDMA) 1 diurethane dimethacrylate (DUDMA), and / or polycarbonate dimethacrylate (PCDMA, condensation product of 2 parts hydroxyalkyl methacrylate and 1 part bis (chloroformate) as described in US 5,276,068 and 5,444,104, further ethoxylated bisphenol A dimethacrylate (EBPDMA) as described in US 6,013,694, and especially Bis-GMA (Bowen Monomer).
• PLDMA polyurethane dimethacrylate
• DMDMA diurethane dimethacrylate
• PCDMA polycarbonate dimethacrylate
• EBPDMA ethoxylated bisphenol A dimethacrylate
• Thinner monomers are used to reduce the viscosity but also to influence the wettability.
• suitable are hydroxyalkyl (meth) acrylates such as 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate and 4-hydroxybutyl (meth) acrylate; Ethylene glycol units containing (meth) acrylates such as ethylene glycol methacrylate, diethylene glycol methacrylate, triethylene glycol dimethacrylate and tetraethylene glycol dimethacrylate; Diol dimethacrylates such as 1,4-butanediol di (meth) acrylate, dodecanediol di (meth) acrylate and 1,6-hexane diol di (meth) acrylate, especially 1,6-hexanediol dimethacrylate (HDDMA).
• Other suitable monomers are, for. Polyethylene glycol mono (meth) acrylate; Glycerol
• Trimethylolpropane di (meth) acrylate Pentaerythritol tri (meth) acrylate; the (meth) acrylate of the phenyl glycidyl ether.
• Tri (ethylene glycol) dimethacrylate (TEGDMA) is particularly preferred.
• diluent monomers and viscous resins can vary widely and range from 1 to 70 percent by weight of the dental material.
• Crosslinkers are added, for example, to increase the final strength:
• Crosslinking difunctional or polyfunctional acrylates or methacrylates are suitable as difunctional (meth) acrylate crosslinkers.
• the admixture of known low-shrinkage monomers capable of free-radical ring opening polymerization such as, for example, mono- or polyfunctional vinylcyclopropanes or bicyclic cyclopropane acrylate derivatives (cf., DE 196 16 183 C2 or EP 03 022 855) or yclic allyl sulfides (cf., US Pat. Nos. 6,043,361 or 6,344,556), may also be advantageous which can also be used in combination with the di (meth) acrylate crosslinkers listed above.
• known low-shrinkage monomers capable of free-radical ring opening polymerization such as, for example, mono- or polyfunctional vinylcyclopropanes or bicyclic cyclopropane acrylate derivatives (cf., DE 196 16 183 C2 or EP 03 022 855) or yclic allyl sulfides (cf., US Pat. Nos. 6,043,361 or 6,344,556)
• Preferred ring-opening polymerisable monomers are those vinylcyclopropanes, such as 1,1-di (ethoxycarbonyl) - or 1, 1-di (methoxycarbonyl) -2-vinylcyclopropane or the esters of 1-ethoxycarbonyl- or 1-methoxycarbonyl-2-vinylcyclopropancarbonklare with ethylene glycol, 1, 1, 1-trimethylolpropane, 1, 4-cyclohexanediol or resorcinol.
• vinylcyclopropanes such as 1,1-di (ethoxycarbonyl) - or 1, 1-di (methoxycarbonyl) -2-vinylcyclopropane or the esters of 1-ethoxycarbonyl- or 1-methoxycarbonyl-2-vinylcyclopropancarbonklare with ethylene glycol, 1, 1, 1-trimethylolpropane, 1, 4-cyclohexanediol or resorcinol.
• Preferred bicyclic cyclopropane derivatives are 2- (bicyclo [3.1.0] hex-1-yl) -acrylic acid methyl or ethyl esters or their dicubstitution products in the 3-position such as (3,3-bis (ethoxycarbonyl) bicyclo [3.1.0 ] hex-1-yl) acrylic acid methyl or ethyl ester.
• Preferred cyclic allylsulfides are especially the addition products of 2- (hydroxymethyl) -6-methylene-1, 4-dithiepan or 7-hydroxy-3-methylene-1,5-dithiacylooctane with 2,2,4-trimethylhexamethylene-1,6 diisocyanate or the asymmetric hexamethylene diisocyanate trimer Desmodur® VP IS 2294 from Bayer AG. Also suitable are cationically polymerizable calix [n] arenes corresponding to the general formula (I) as described in DE102007035734A1.
• Known low-shrinkage cationic ring-opening polymerizable monomers are e.g. Glycidyl ethers or cycloaliphatic epoxides, cyclic ketene acetals, spiroorthocarbonates, oxetanes or bicyclic orthoesters.
• Examples are: 2-methylene-1,4,6-trioxaspiro [2.2] nonane, 3,9-dimethylene-1, 5,7,11-tetraoxaspiro [5.5] undecane, 2-methylene-1, 3-dioxepane, 2 -Phenyl-4-methylene-1,3-dioxolane, bisphenol A diglycidyl ether, 3,4-epoxycyclohexylmethyl-3,4-epoxycyclohexanecarboxylate,
• silicic acid polycondensates obtained, for example, by hydrolytic condensation of silanes containing cationically polymerizable groups, preferably e.g. Epoxide, oxetane, or Spiroorthoester phenomenon wear. Such silicic acid polycondensates are described, for example, in DE 41 33 494 C2 or US Pat. No. 6,096,903.
• the dental materials based on free-radically polymerizable monomers according to the invention can be polymerized with the known free-radical initiators (compare Encyclopedia of Polymer Science and Engineering, Vol. 13, Wiley-Intersci. Pub., New York, etc., 1988, 754ff.).
• Photoinitiators are particularly useful for the UV or visible region, such as , Benzoin ethers, dialkylbenzilketals, dialkoxyacetophenones, acyl-bisacylphosphine oxides, [alpha] -diketones such as 9,10-phenanthrenequinone, diacetyl, furil, anisil, 4,4'-dichlorobenzil and 4,4'-dialkoxybenzil and camphorquinone.
• azo compounds such as 2,2'-azobis (isobutyronitrile) (AIBN) or
• Azobis (4-cyanovaleric acid), or peroxides such as dibenzoyl peroxide, dilauroyl peroxide, tert-butyl peroctoate, tert-butyl perbenzoate or di (tert-butyl) peroxide.
• Suitable initiators for the heat curing are benzpinacol and 2,2'-dialkylbenzopinacols.
• Redox systems which have already proven themselves are: combinations of benzoyl peroxide or camphorquinone with amines, such as N, N-dimethyl-p-toluidine, N, N-dihydroxyethyl-p-toluidine, p-dimethylaminobenzoic acid ethyl ester or structurally related systems.
• redox systems are also composed
• Peroxides and such reducing agents such as. As ascorbic acid, barbiturates or sulfinic acids, suitable.
• Dental materials based on cationically polymerizable monomers according to the invention can be mixed with the known cationic photoinitiators, especially with diaryliodonium or triarylsulfonium salts, if appropriate in the presence of suitable sensitizers, e.g. Camphorquinone, harden.
• suitable sensitizers e.g. Camphorquinone, harden.
• diaryliodonium salts which can be used with camphorquinone or thioxanthones as sensitizer in the visible range are the commercially available 4-octyloxy-phenyl-phenyl-iodonium hexafluoroantimonate or isopropylphenyl-methylphenyl-iodonium tetrakis (pentafluorophenyl) borate.
• dental materials according to the invention may contain one or more fillers, preferably organic or inorganic particulate fillers.
• Preferred inorganic particulate fillers are amorphous spherical nanoparticulate fillers based on oxides, such as fumed silica or precipitated silica, ZrO 2 and TiO 2 or mixed oxides of SiO 2 , ZrO 2 and / or TiO 2 with an average particle diameter of 10 to 200 nm, minifull fillers such as quartz, glass ceramic or glass powder having an average particle size of 0.2 to 5 ⁇ m as well as radiopaque fillers, such as ytterbium trifluoride or nanoparticulate
• Tantalum (V) oxide or barium sulfate In addition, fibrous fillers such as glass fibers, polyamide or carbon fibers can be used.
• the dental materials according to the invention can be added, if necessary, further additives, such as. Stabilizers, UV absorbers, dyes or pigments and solvents, such. Water, ethanol, acetone or ethyl acetate or lubricant.
• the dental materials according to the invention are preferably composed of the following components:
• Cements according to the invention preferably contain: (a) 0.5 to 30% by weight, more preferably 0.5 to 20 wt .-% of at least one polymerizable calix [n] arene according to formula (I) 1 (b) 0.01 to 2 wt .-%, particularly preferably 0.01 to 1, 5 wt .-% initiator , (c) 1 to 30 wt .-%, particularly preferably 5 to 20 wt .-% of at least one further cationically and / or free-radically polymerizable monomers and / or another ring-opening polymerizable monomer, preferably a polyfunctional (meth) acrylate, ( d) 5 to 70 wt .-%, particularly preferably 10 to 60 wt .-% filler and (e) 0.01 to 5 wt .-%, preferably 0.01 to 2 wt .-%, particularly preferably 0.01 to 1 wt .-% additive, wherein the percentages in each
• Filling composites of the invention preferably contain: (a) 0.5 to 30% by weight, particularly preferably 0.5 to 20% by weight, of at least one polymerisable calix [n] arene according to formula (I), (b) 0.01 to 5 wt .-%, preferably 0.01 to 2 wt .-%, particularly preferably 0.01 to 1, 5 wt .-% initiator, (c) 1 to 30 wt .-%, preferably 5 to 20 wt.
• % particularly preferably 5 to 15% by weight of at least one further cationically and / or free-radically polymerizable monomer and / or at least one further ring-opening polymerizable monomer, particularly preferably in the polyfunctional (meth) acrylate (d) 5 to 85% by weight, more preferably 10 to 80 wt .-% filler and (e) 0.01 to 5 wt .-%, preferably 0.01 to 3 wt .-%, particularly preferably 0.01 to 2 wt .-% additive, wherein add the percentages to 100% each.
• Coating materials according to the invention preferably contain: (a) 1 to 70% by weight, more preferably 1 to 50% by weight of at least one polymerizable calix [n] arene according to formula (I), (b) 0.01 to 5% by weight. %, preferably 0.01 to 2 wt .-%, particularly preferably 0.1 to 1, 5 wt .-% initiator, (c) 5 to 70 wt .-%, preferably 5 to 60 wt .-%, particularly preferably From 5 to 50% by weight of at least one further cationically and / or free-radically polymerizable monomer, and / or at least one further ring-opening polymerizable monomer, particularly preferably at least one polyfunctional (meth) acrylate, (d) from 1 to 30% by weight, preferably from 3 to 20% by weight, particularly preferably from 3 to 15% by weight of a filler, preferably of a nanoparticulate filler, and (e) from 0.01 to 5% by weight, preferably from 0.
• Dental adhesives according to the invention preferably contain: (a) 0.5 to 50% by weight, especially preferably 1, 0 to 30 wt .-% of at least one polymerizable calix [n] arene according to formula (I), (b) 0.01 to 5 wt .-%, particularly preferably 0.01 to 2 wt .-% of at least one Initiator (c) 5 to 70 wt .-%, particularly preferably 5 to 60 wt .-% of at least one further cationically and / or free-radically polymerizable monomer and / or at least one ring-opening polymerizable monomer, more preferably at least one multi-functional (meth ) acrylates, (d) 0 to 30 wt .-%, particularly preferably 3 to 20 wt .-% filler and (e) 0.01 to 5 wt .-%, particularly preferably 0.01 to 3 wt .-% additives , (f) 0 to 50 w
• Denture base materials according to the invention are preferably those based on methacrylates. Properties desired for a denture base material are e.g. by a high degree of crosslinking or by the addition of impact modifiers such as polybutadiene polymers, as described for example in EP 1 702 633 A2. Denture base materials usually contain pigments to produce a gum-like impression.
• the material for artificial teeth is subject to very similar requirements as the filling materials described above and is therefore composed of the same components.
• Hoof materials like denture base material, are bi-component, self-curing plastics used to repair hoof damage in ungulates.
• Material suitable for the earmold is one which is also used for dental impression materials. These are mostly addition- or condensation-crosslinking silicone materials, e.g. in EP 1 374 915 A2.
• Example 2 Dental materials with particles according to Example 1
• the result is an antimicrobial dental material.

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• Health & Medical Sciences (AREA)
• Oral & Maxillofacial Surgery (AREA)
• Animal Behavior & Ethology (AREA)
• Epidemiology (AREA)
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• General Health & Medical Sciences (AREA)
• Public Health (AREA)
• Veterinary Medicine (AREA)
• Chemical & Material Sciences (AREA)
• Inorganic Chemistry (AREA)
• Ceramic Engineering (AREA)
• Plastic & Reconstructive Surgery (AREA)
• Engineering & Computer Science (AREA)
• Dental Preparations (AREA)

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• 2009
  • 2009-08-04 DE DE102009035970A patent/DE102009035970A1/de not_active Ceased
• 2010
  • 2010-07-24 WO PCT/EP2010/004551 patent/WO2011015293A2/de not_active Ceased
  • 2010-07-24 BR BR112012002414A patent/BR112012002414A8/pt not_active Application Discontinuation
  • 2010-07-24 US US13/382,699 patent/US20120132104A1/en not_active Abandoned
  • 2010-07-24 JP JP2012523223A patent/JP2013501011A/ja active Pending
  • 2010-07-24 EP EP10736991.0A patent/EP2461785B1/de active Active

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