| Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2013: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2012: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Outline of Final Research Achievements |
The objective of this study was to evaluate the feasibility of fabrication of interconnected pore forming tricalcium phosphate cement (TCP).β-TCP granules were prepared by heating the mixture of calcium carbonate and dicalcium phosphate dihydrate (DCPD) with Ca/P molar ratio of 1.5 at 1100°C. Liquid phase was prepared by dissolving calcium phosphate monohydrate into phosphoric acid so that the solution will be saturated with respect to DCPD. When the β-TCP granules were mixed with the acidic calcium phosphate solution, DCPD was formed on the surface of β-TCP granules. DCPD crystals was also formed between the β-TCP granules and thus bridged the β-TCP granules. Although the setting reaction was 2 min, addition of the citric acid result in the extension of the setting time to reach 4 min when the acidic calcium phosphate solution contains 0.1 mol/L citric acid which is known to chelate calcium ions. Further studies are awaited base on the results obtained in the present study.
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