IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0847781
(2004-05-17)
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발명자
/ 주소 |
- Kangas,Lani S.
- Bui,Hoa T.
- Thalacker,Jason P.
- Kolb,Brant U.
- Oxman,Joel D.
- Rolf,Jacqueline C.
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출원인 / 주소 |
- 3M Innovative Properties Company
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인용정보 |
피인용 횟수 :
68 인용 특허 :
74 |
초록
The present invention features ionomer compositions containing nanofillers. The compositions can be used in a variety of dental and orthodontic applications, for example, as adhesives, cements, restoratives, coatings and sealants.
대표청구항
▼
What is claimed is: 1. A hardenable dental composition comprising: (a) a polyacid; (b) an acid-reactive filler; (c) at least 15 weight percent of a nanofiller or combination thereof, each nanofiller having an average particle size of at most 200 nanometers; and (d) water. 2. The composition of c
What is claimed is: 1. A hardenable dental composition comprising: (a) a polyacid; (b) an acid-reactive filler; (c) at least 15 weight percent of a nanofiller or combination thereof, each nanofiller having an average particle size of at most 200 nanometers; and (d) water. 2. The composition of claim 1, wherein at least one of the nanofillers and the acid-reactive filler are the same compound. 3. The composition of claim 1, wherein the composition comprises at least 20 weight percent of the nanofiller or combination thereof. 4. The composition of claim 1, wherein the nanofiller or combination thereof has an average particle size of at most 100 nanometers. 5. The composition of claim 1, further comprising a polymerizable component. 6. The composition of claim 5 wherein the polymerizable component comprises an ethylenically unsaturated compound. 7. The composition of claim 6, wherein the polymerizable component comprises an ethylenically unsaturated compound with acid functionality. 8. The composition of claim 7, wherein the acid functionality includes an oxygen-containing acid of carbon, sulfur, phosphorous, or boron. 9. The composition of claim 7, wherein the polyacid and the ethylenically unsaturated compound with acid functionality are the same. 10. The composition of claim 1, wherein the polyacid comprises a polymer having a plurality of acidic repeating groups but is substantially free of polymerizable groups. 11. The composition of claim 10, further comprising a polymerizable component. 12. The composition of claim 1, wherein the polyacid comprises a polymer having a plurality of acidic repeating groups and a plurality of polymerizable groups. 13. The composition of claim 12, further comprising a polymerizable component. 14. The composition of claim 1, wherein the nanofiller or combination thereof is substantially free of fumed silica and pyrogenic fillers. 15. The composition of claim 1, wherein the acid-reactive filler is selected from the group consisting of metal oxides, glasses, metal salts, and combinations thereof. 16. The composition of claim 15, wherein the acid-reactive filler comprises a fluoroaluminosilicate (FAS) glass. 17. The composition of claim 16, wherein the composition comprises less than 50 weight percent FAS glass. 18. The composition of claim 16, wherein the composition comprises less than 30 weight percent FAS glass. 19. The composition of claim 16, wherein the composition comprises less than 20 weight percent FAS glass. 20. The composition of claim 15, wherein the acid-reactive filler comprises an oxyfluoride material. 21. The composition of claim 20, wherein at least 90% by weight of the oxyfluoride material is nanostructured. 22. The composition of claim 1, wherein at least one of the nanofillers is acid reactive. 23. The composition of claim 1, wherein at least one of the nanofillers is non-acid reactive. 24. The composition of claim 1, wherein the nanofiller or combination thereof comprises particles selected from the group consisting of silica; zirconia; oxides of titanium, ahuninum, cerium, tin, yttrium, strontium, barium, lanthanum, zinc, ytterbium, bismuth, iron and antimony; and combinations thereof. 25. The composition of claim 1, wherein the nanofiller of combination thereof comprises particles selected from the group consisting of silica; zirconia oxides of titanium; and combinations thereof. 26. The composition of claim 1, wherein the nanofiller or the combination thereof comprises nanoclusters. 27. The composition of claim 1, wherein the nanofiller or combination thereof comprises at least 80 weight percent nanoclusters. 28. The composition of claim 26, wherein the nanoclusters are selected from the group consisting of silica clusters, silica.-zirconia clusters, and combinations thereof. 29. The composition of claim 26, wherein the nanoclusters contain reactive ions. 30. The composition of claim 5, further comprising a redox cure system. 31. The composition of claim 5, further comprising a photoinitiator system. 32. The composition of claim 1, further comprising at least one additive selected from the group consisting of other fillers, pyrogenic fillers, fluoride sources, whitening agents, anticaries agents, remineralizing agents, enzymes, breath fresheners, anesthetics, clotting agents, acid neutralizers, chemotherapeutic agents, immune response modifiers, medicaments, indicators, dyes, pigments, wetting agents, tartaric acid, chelating agents, surfactants, buffering agents, viscosity modifiers, thixotropes, polyols, antimicrobial agents, anti-inflammatory agents, antifungal agents, stabilizers, agents for treating xerostomia, desensitizers, and combinations thereof. 33. The composition of claim 1, wherein a portion of the surface of at least one nanofiller is chemically treated. 34. The composition of claim 1, wherein a portion of the surface of at least one nanofiller is silane treated. 35. The composition of claim 5, wherein the composition is selected from the group consisting of dental restoratives, dental adhesives, dental cements, cavity liners, orthodontic adhesives, dental sealants, and dental coatings. 36. The composition of claim 1, wherein the composition comprises a multi-part composition comprising a first part and a second part, wherein each part can independently be selected from the group consisting of a liquid, paste, gel, and powder. 37. The composition of claim 36, wherein the multi-part composition is selected from the group consisting of a paste-paste composition, a paste-liquid composition, a paste-powder composition, and a powder-liquid composition. 38. A multi-part hardenable dental composition comprising: (a) a first part comprising a polyacid; (b) a second part comprising an acid-reactive filler; (c) at least 15 weight percent of a nanofiller or combination thereof, having an average particle size of at most 200 nanometers, wherein at least one nanofiller is present in the first part, the second part, or both parts; and (d) water present in the first part, the second part, or both parts. 39. The composition of claim 38, wherein the first part comprises a paste. 40. The composition of claim 38, wherein the second part comprises a paste. 41. The composition of claim 38, wherein the first part and the second part each comprises a paste.
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