Materials for living hard tissue replacements
First Claim
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1. A method for replacement of living hard tissue comprising:
- providing an implant comprising a ceramic material which contains at least 40% by volume of a diopside composition, a wollastonite composition or a mixture of diopside and wollastonite compositions, and which (i) contains CaO and SiO2 as essential components, (ii) is substantially free from calcium phosphate and (iii) is capable of forming a compound based in calcium phosphate by contact with an aqueous solution containing phosphorous, said CaO and SiO2 being present in a weight ratio of CaO to SiO2 of between 1;
4 and 6;
1; and
inserting said implant into a living body to replace living hard tissue.
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Abstract
The materials for living hard tissue replacements of the present invention comprise a ceramic material which contain Cao and SiO2 as essential components, and MgO as an optional components, are substantially free from calcium phosphate and are capable of forming a compound based on calcium phosphate by contact with an aqueous solution containing phosphorus, and show high biological affinity.
29 Citations
22 Claims
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1. A method for replacement of living hard tissue comprising:
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providing an implant comprising a ceramic material which contains at least 40% by volume of a diopside composition, a wollastonite composition or a mixture of diopside and wollastonite compositions, and which (i) contains CaO and SiO2 as essential components, (ii) is substantially free from calcium phosphate and (iii) is capable of forming a compound based in calcium phosphate by contact with an aqueous solution containing phosphorous, said CaO and SiO2 being present in a weight ratio of CaO to SiO2 of between 1;
4 and 6;
1; andinserting said implant into a living body to replace living hard tissue. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification