CA2387215A1 - Dental materials with nano-sized silica particles - Google Patents

Dental materials with nano-sized silica particles Download PDF

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Publication number
CA2387215A1
CA2387215A1 CA002387215A CA2387215A CA2387215A1 CA 2387215 A1 CA2387215 A1 CA 2387215A1 CA 002387215 A CA002387215 A CA 002387215A CA 2387215 A CA2387215 A CA 2387215A CA 2387215 A1 CA2387215 A1 CA 2387215A1
Authority
CA
Canada
Prior art keywords
dental
oxide
dental material
hardening
silica particles
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.)
Granted
Application number
CA002387215A
Other languages
French (fr)
Other versions
CA2387215C (en
Inventor
Xiaodong Zhang
Brant U. Kolb
Douglas A. Hanggi
Bradley D. Craig
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.)
3M Innovative Properties Co
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=23701047&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2387215(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Publication of CA2387215A1 publication Critical patent/CA2387215A1/en
Application granted granted Critical
Publication of CA2387215C publication Critical patent/CA2387215C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
    • 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
    • A61K6/80—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
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/64—Nanometer sized, i.e. from 1-100 nanometer
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/259—Silicic material
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
    • Y10T428/2991—Coated
    • Y10T428/2993—Silicic or refractory material containing [e.g., tungsten oxide, glass, cement, etc.]
    • Y10T428/2995—Silane, siloxane or silicone coating
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
    • Y10T428/2991—Coated
    • Y10T428/2998—Coated including synthetic resin or polymer

Abstract

A dental material comprising a hardenable resin and silica particles dispersed within the hardenable resin, wherein the silica particles have an average diameter of less than about 200nm and are present in an amount greater than about 40 wt% of the weight of the dental material. The dental material may further comprise a heavy metal oxide. The dental material can be used as dental adhesives, artificial crowns, anterior or posterior fillings, casting materials, cavity liners, cements, coating compositions, mill blanks, orthodontic devices, restoratives, prostheses, and sealants.

Claims (32)

1. A dental material comprising:

a) a hardenable resin; and b) silica particles dispersed within said resin, wherein said silica particles have an average diameter of less than 200 nm and are present in an amount greater than 40 wt%, based on the weight of said dental material.
2. The dental material of claim 1 wherein said silica particles are present in an amount greater than 40 wt% and less than 90 wt% based on the weight of said dental material.
3. The dental material of claim 1 wherein said silica particles are present in an amount greater than 50 wt% and less than 75 wt% based on the weight of said dental material.
4. The dental material of any one of claims 1 to 3, wherein said silica particles have an average diameter of less than 100 nm.
5. The dental material of any one of claims 1 to 4, wherein said material, after hardening, has a Visual Opacity value of less than about 0:4.
6. The dental material of any one of claims 1 to 4, wherein said material, after hardening, has a Visual Opacity value of less than about 0:35.
7. The dental material of any one of claims 1 to 4, wherein said material, after hardening, has a Visual Opacity value of less than about 0.25.
8. The dental material of any one of claims 1 to 7, wherein said material, after hardening, has a diametral tensile strength greater than about 15 MPa.
9. The dental material of any one of claims 1 to 7, wherein said material, after hardening, has a diametral tensile strength greater than about 40 MPa.
10. The dental material of any one of claims 1 to 7, wherein said material, after hardening, has a diametral tensile strength greater than about 60 MPa.
11. The dental material of any one of claims 1 to 10, wherein said material, after hardening, has a compressive strength greater than about 35 MPa.
12. The dental material of any one of claims 1 to 10, wherein said material, after hardening, has a compressive strength greater than about 200 MPa.
13. The dental material of any one of claims 1 to 10, wherein said material, after hardening, has a compressive strength greater than about 350 MPa.
14. The dental material of any one of claims 1 to 13, wherein said hardenable resin is selected from the group consisting of acrylates, methacrylates, epoxies, and mixtures thereof.
15. The dental material of any one of claims 1 to 14, further comprising an initiator for hardening said resin.
16. The dental material of any one of claims 1 to 15, further comprising a heavy metal oxide.
17. The dental material of claim 16 wherein said heavy metal oxide is selected from the group consisting of zirconium oxide, cerium oxide, tin oxide, yttrium oxide, strontium oxide, barium oxide, lanthanum oxide, zinc oxide, ytterbium oxide, bismuth oxide and mixtures thereof.
18. The dental material of claim 16 wherein said heavy metal oxide is a cubic or tetragonal zirconium oxide.
19. The dental material of any one of claims 1 to 18, further comprising fumed silica.
20. The dental material of any one of claims 1 to 19, wherein said material is selected from the group consisting of dental restoratives, dental adhesives, dental mill blanks, dental prostheses, orthodontic devices, dental casting materials, and dental coatings.
21. A method of making a dental material comprising:
a) admixing a surface modifying agent with silica particles;

b) admixing said surface modified silica particles with a hardenable resin; and c) hardening said resin;

wherein said silica particles are dispersed within said resin have an average diameter of less than 200 nm, and are present in an amount greater than 40 wt% of the total weight of said dental material.
22. The method according to claim 21 wherein said silica particles are present in an amount greater than 40 wt% and less than 90 wt% of the total weight of said dental material.
23. The method according to claim 21 wherein said silica particles are present in an amount greater than 50 wt% and less than 75 wt% of the total weight of said dental material.
24. The method according to any one of claims 21 to 23, wherein said silica particles have an average diameter of less than 100 nm.
25. The method according to any one of claims 21 to 24, wherein said hardenable resin is selected from the group consisting of acrylates, methacrylates, epoxies, and mixtures thereof.
26. The method according to any one of claims 21 to 25, further comprising an interim step of d) admixing an initiator for hardening said resin, wherein said step d) is performed prior to hardening said resin.
27. The method according to any one of claims 21 to 26, further comprising an interim step of e) admixing a heavy metal oxide in said hardenable resin, wherein said step e) is performed prior to hardening said resin.
28. The method according to claim 27 wherein said heavy metal oxide is selected from the group consisting of zirconium oxide, cerium oxide, tin oxide, yttrium oxide, strontium oxide, barium oxide, lanthanum oxide, zinc oxide, ytterbium oxide, bismuth oxide and mixtures thereof.
29. The method according to claim 27 wherein said heavy metal oxide is a cubic or tetragonal zirconium oxide.
30. The method according to any one of claims 21 to 29, wherein said material is selected from the group consisting of dental restoratives, dental adhesives, dental mill blanks, dental prostheses, orthodontic devices, dental casting materials, and dental coatings.
31. The method according to any one of claims 21 to 30, wherein the material further comprises fumed silica.
32. Use of the dental material as claimed in any one of claims 1 to 19 as a dental restorative, adhesive, cement, orthodontic device, mill blank or prosthesis.
CA2387215A 1999-10-28 2000-02-25 Dental materials with nano-sized silica particles Expired - Lifetime CA2387215C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US42893799A 1999-10-28 1999-10-28
US09/428,937 1999-10-28
PCT/US2000/005089 WO2001030307A1 (en) 1999-10-28 2000-02-25 Dental materials with nano-sized silica particles

Publications (2)

Publication Number Publication Date
CA2387215A1 true CA2387215A1 (en) 2001-05-03
CA2387215C CA2387215C (en) 2010-02-09

Family

ID=23701047

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2387215A Expired - Lifetime CA2387215C (en) 1999-10-28 2000-02-25 Dental materials with nano-sized silica particles

Country Status (7)

Country Link
US (1) US6899948B2 (en)
EP (2) EP1227781B9 (en)
JP (2) JP4800535B2 (en)
AU (1) AU3505400A (en)
CA (1) CA2387215C (en)
DE (2) DE60042038D1 (en)
WO (1) WO2001030307A1 (en)

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