A-20 βリン酸三カルシウム/炭酸アパタイト硬化体の調製(セラミックス,一般講演(口頭発表),第66回日本歯科理工学会学術講演会)

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  • A-20 Preparation of β-tricalcium phosphate/carbonate apatite cement

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Biphasic calcium phosphate consisting of carbonate apatite and β-tricalcium phosphate(β-TCP) is an excellent bone substitute with controllable bioresorbability. Fabrication of biphasic calcium phosphate with self-setting ability is expected to enhance the potential of applicability as bone substitute. In this study, various mixtures of α-TCP/β-TCP powder after carbonation period 1, 3, and 5h with 1M NaHCO_3 were prepared. These powders were mixed with 0.25M Na_2HPO_4 at a P/L ratio of 2, and then hardened at 37℃ and 100%RH up to 24 hours. XRD patterns and FT-IR spectrum showed that the resulting hardened cement consisted of biphasic carbonate apatite and β-TCP. Diametral tensile strength of the cement decreased with the carbonation period.

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