Modification of ceramic surfaces

Patent metadata

Field	Value
Publication number	US-9402697-B2
Application number	US-201314395242-A
Country	US
Kind code	B2
Filing date	Apr 18, 2013
Priority date	Apr 19, 2012
Publication date	Aug 2, 2016
Grant date	Aug 2, 2016

Abstract

A fluoride treated ceramic material is provided, the ceramic material comprising fluorinated metal oxide on its surface. A method for the preparation of such treated ceramics is also provided, the method involving exposure of the ceramic to a fluorine-containing reagent. The ceramic materials can be further functionalized so as to bond to functional ligands and/or resins. The ceramic materials can be, for example, ceramic medical implants or particulate ceramic, which can be incorporated within dental and/or orthopedic composites.

First claim

That which is claimed:

1. A dental composite material comprising a polymerizable resin and a particulate filler dispersed therein, wherein the filler comprises ceramic particles having a fluorinated metal oxide surface, wherein at least a portion of the ceramic particles comprise an antimicrobial agent attached thereto, the antimicrobial agent selected from the group consisting of silver acetate, silver benzoate, silver carbonate, silver ionate, silver iodide, silver lactate, silver laureate, silver nitrate, silver oxide, silver palmitate, silver protein, silver sulfadiazine, calcium oxide, calcium hydroxide, magnesium oxide, magnesium hydroxide, barium oxide, barium hydroxide, strontium oxide, strontium hydroxide alkali, chlorhexidine; 5-chloro-2(2-4-dichlorophenoxy)phenol), polyhexamethylenebiguanide hydrochloride (PHMB), doxycycline, metronidazole, thymol, encalypol, methyl salicylate, 4′-sulfamoylsulfanilanilide, 3-amino-6-(2-(5-nitro-2-furyl)vinyl)pyridiazine, transpseudomonic acid, xanthomycin, alpha-amino-p-toluene sulfonamide, alpha-azido benzyl penicillin, penicillin O, penicillin N, monopropionyl erthromycin, erythromycin 9(O-((2-methoxyethoxy)methyl) oxime; 1,1′-hexamethlene bis(5-(p-chlorophenyl)biguanide), cetyl pyridinium chloride; benzalkonium chloride, cetyl pyridinium bromide, 2,4,4′-trichloro-2′-hydroxy-diphenyl ether, antimicrobial peptides, and combinations thereof.

2. The dental composite material of claim 1 , wherein the fluorinated metal oxide surface comprises a mixture of metal oxyfluoride and metal fluoride phases.

3. The dental composite material of claim 1 , wherein the ceramic particles comprise a material selected from the group consisting of zirconia, alumina, titania, and chromium-oxide-based materials.

4. The dental composite material of claim 1 , wherein at least a portion of the ceramic particles further comprise a silane coupling agent overlying the fluorinated metal oxide surface.

5. The dental composite material of claim 4 , wherein the silane coupling agent is selected from the group consisting of 3 -methacryloyloxypropyltrimethoxysilane, 3-trimethoxysilylpropylmethacrylate, 3-acryloyloxypropyltrimethoxysilane, 3-isocyanatopropyltriethoxysilane, N-[3-(trimethoxysilyl)propylethylenediamine],3-mercaptopropyltrimethoxysilane, bis[3-(triethoxysilyl)propyl]polysulfide, and combinations thereof.

6. The dental composite material of claim 4 , wherein at least a portion of the ceramic particles are coupled to the polymerizable resin by covalent binding between a moiety on the silane coupling agent and a moiety on the resin.

7. The dental composite material of claim 1 , wherein the polymerizable resin comprises a methacrylate or dimethacrylate oligomer matrix.

8. The dental composite material of claim 1 , wherein the polymerizable resin comprises a resin selected from the group consisting of bisphenol-A glycidyl methacrylate, urethane dimethacrylate, triethylene glycol dimethacrylate, and copolymers, and mixtures thereof.

9. The dental composite material of claim 1 , wherein the antimicrobial agent is attached indirectly to the ceramic particles by means of a coupling agent overlying the fluorinated metal oxide surface.

10. The dental composite material of claim 9 , wherein the coupling agent comprises a silane coupling agent.

11. A method of preparing the dental composite material of claim 1 , comprising:
providing particulate ceramic comprising surfaces formed of a material comprising available hydroxyl groups;
treating the particulate ceramic with a fluorine-containing reagent to provide a fluorinated metal oxide on the particulate ceramic surfaces;
attaching one or more of the antimicrobial agents to the fluorinated metal oxide surface; and
dispersing the particulate ceramic within a polymerizable resin matrix.

12. The method of claim 11 , further comprising reacting the particulate ceramic having the fluorinated metal oxide thereon with a coupling agent.

13. The method of claim 12 , further comprising coupling the coupling agent to the polymerizable resin matrix.

14. The method of claim 11 , wherein the attaching comprises attaching the one or more antimicrobial agents indirectly to the fluorinated metal oxide surface by means of a coupling agent overlying the fluorinated metal oxide surface.

15. The method of claim 11 , further comprising attaching the one or more antimicrobial agents to a portion of the fluorinated metal oxide surfaces and coupling a portion of the fluorinated metal oxide surfaces to the resin matrix.

16. The method of claim 11 , wherein the treating step comprises plasma treatment.

17. The method of claim 11 , wherein the treating step comprises physical roughening or chemical etching of the implant surface prior to or at the same time as treating the implant with the fluorine-containing reagent.

18. The method of claim 11 , wherein the fluorine-containing reagent is sulfur hexafluoride (SF 6 ).

19. A ceramic material comprising a fluorinated metal oxide surface with one or more antimicrobial agents attached thereto, wherein the antimicrobial agent is selected from the group consisting of silver acetate, silver benzoate, silver carbonate, silver ionate, silver iodide, silver lactate, silver laureate, silver nitrate, silver oxide, silver palmitate, silver protein, silver sulfadiazine, calcium oxide, calcium hydroxide, magnesium oxide, magnesium hydroxide, barium oxide, barium hydroxide, strontium oxide, strontium hydroxide alkali, chlorhexidine; 5-chloro-2(2-4-dichlorophenoxy)phenol), polyhexamethylenebiguanide hydrochloride (PHMB), doxycycline, metronidazole, thymol, encalypol, methyl salicylate, 4′-sulfamoylsulfanilanilide, 3-amino-6-(2-(5-nitro-2-furyl)vinyl)pyridiazine, transpseudomonic acid, xanthomycin, alpha-amino-p-toluene sulfonamide, alpha-azido benzyl penicillin, penicillin O, penicillin N, monopropionyl erthromycin, erythromycin 9(O-((2-methoxyethoxy)methyl) oxime; 1,1′-hexamethlene bis(5-(p-chlorophenyl)biguanide), cetyl pyridinium chloride; benzalkonium chloride, cetyl pyridinium bromide, 2,4,4′ -trichloro-2′ -hydroxy-diphenyl ether, antimicrobial peptides, and combinations thereof.

20. The ceramic material of claim 19 , wherein the one or more antimicrobial agents are attached indirectly to the ceramic material by means of a coupling agent overlying the fluorinated metal oxide surface.

21. The ceramic material of claim 20 , wherein the coupling agent comprises a silane coupling agent.

22. The ceramic material of claim 21 , wherein the silane coupling agent is selected from the group consisting of 3-methacryloyloxypropyltrimethoxysilane, 3-trimethoxysilylpropylmethacrylate, 3-acryloyloxypropyltrimethoxysilane, 3-isocyanatopropyltriethoxysilane, N-[3-(trimethoxysilyl)propylethylenediamine], 3-mercaptopropyltrimethoxysilane, bis[3-(triethoxysilyl)propyl]polysulfide, and combinations thereof.

23. The ceramic material of claim 19 , wherein the ceramic material is a medical implant or a particulate ceramic.

24. The ceramic material of claim 19 , wherein the ceramic material comprises a material selected from the group consisting of zirconia, alumina, titania, and chromium-oxide-based materials.

25. A method of preparing the surface of a ceramic implant, comprising:
providing a ceramic implant comprising a surface formed of a material comprising available hydroxyl groups;
treating the ceramic implant with a fluorine-containing reagent to provide a fluorinated metal oxide

Assignees

• Res Triangle Inst

Inventors

• Piascik Jeffrey Robert
• Stoner Brian R

Classifications

• A61K6/818

  comprising zirconium oxide · CPC title

• A61K6/78

  Pigments · CPC title

• A61K6/69

  Medicaments · CPC title

• A61K6/822

  comprising rare earth metal oxides · CPC title

• A61K6/889

  Polycarboxylate cements; Glass ionomer cements · CPC title