APATITE COMPOSITIONS
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Abstract
The present invention relates to an apatite composition comprising 0.001-99.999 wt. % of an apatite and 0.001-99.999 wt. % of a glass carbomer, based on the total weight of the apatite composition. The apatite is preferably a fluoroapatite according to the general formula (I): wherein: M is a cation other than Ca2+, B is an anion other than P043″, A is F″, 0≦x≦9, 0≦y≦5, and 0≦z≦2, and most preferably Ca10(PO4)6F2. The apatite composition is advantageously used as a dental filling material, a denting bonding cement, a bone cement, a bone replacing material, in dental care and cleansing products, glass-ceramics, bone scaffolds and bone substrates, and as a coating material for crowns and bridges.
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Citations
55 Claims
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1-31. -31. (canceled)
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32. An apatite composition comprising 0.001-99.999 wt % of an apatite and 0.001-99.999 wt. % of a glass carbomer, based on the total weight of the apatite composition, wherein the glass carbomer is obtainable by treating a fluorosilicate glass powder with:
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(a) a poly(dialkylsiloxane) having terminal hydroxyl groups, wherein the alkyl groups contain 1 to 4 carbon atoms, (b) an aqueous acid solution, and separating the treated fluorosilicate glass powder from the aqueous acid solution. - View Dependent Claims (33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55)
wherein; M is a cation other than Ca2+; B is an anion other than PO43−
;A is F−
;0≦
x≦
9;0≦
y≦
5; and0≦
z≦
2.
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35. The apatite composition according to claim 34, wherein x=y=0 and z=2.
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36. The apatite composition according to of claim 33, further comprising an apatite according to the general formula (II):
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Ca10-xMx(PO4)6-yByAz(OH)2-z
(II)wherein; M is a cation other than Ca2+; B is an anion other than PO43−
;A is O2−
, CO32−
, Cl−
, OH−
and mixtures thereof;0≦
x≦
9;0≦
y≦
5; and0≦
z≦
2.
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37. The apatite composition according to claim 36, wherein x=y=z=0 and A is OH−
- .
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38. The apatite composition according to claim 32, wherein the poly(dialkylsiloxane) is linear or cyclic.
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39. The apatite composition according to claim 38, wherein the alkyl groups of the poly(dialkylsiloxane) are methyl groups.
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40. The apatite composition according to claim 38, wherein the poly(dialkylsiloxane) has a kinematic viscosity in the range of about 1 to about 100,000 cSt at 25°
- C.
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41. The apatite composition according to claim 32, wherein the particles of the fluorosilicate glass powder have an average size of about 10−
- 3 to about 200 μ
m.
- 3 to about 200 μ
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42. The apatite composition according to claim 32, wherein the aqueous acid solution comprises an inorganic acid or an organic acid.
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43. The apatite composition according to claim 32, wherein the fluoroapatite composition is in a particulate form.
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44. The apatite composition according to claim 43, wherein the particles of the fluoroapatite composition have an average size of about 10−
- 3 to about 200 μ
m.
- 3 to about 200 μ
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45. A dental filling material comprising the apatite composition according to claim 32.
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46. A denting bonding cement comprising the apatite composition according to claim 32.
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47. A bone cement comprising the apatite composition according to claim 32.
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48. A bone replacing material comprising the apatite composition according to claim 32.
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49. A dental care product comprising the apatite composition according to claim 32.
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50. A dental care product according to claim 49, wherein the dental care product is a toothpaste, gel, spray or liquid.
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51. A cleansing product comprising the apatite composition according to claim 32.
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52. A glass-ceramic material comprising the apatite composition according to claim 32.
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53. A bone scaffold material comprising the apatite composition according to claim 32.
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54. A bone substrate comprising the apatite composition according to claim 32.
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55. A coating material and/or an adhesive material for shaped dental articles selected from the group consisting of dental root posts, dental implants, bridges (three-section or multi-section), frames for bridges, (partial) crowns, inlays, onlays and joints, wherein the coating material and/or the adhesive material comprises the apatite composition according to claim 32.
Specification