Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Improved Injection Behavior with the Addition of Granulated β-Tricalcium Phosphate in Brushite Bone Cement

  • Jo, Hyun-Ho (School of Advanced Materials Engineering, The Center of Biomedical Materials and Biotechnology, Andong National University) ;
  • Oh, Kyung-Sik (School of Advanced Materials Engineering, The Center of Biomedical Materials and Biotechnology, Andong National University)
  • Received : 2018.09.05
  • Accepted : 2018.11.03
  • Published : 2018.11.30
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Abstract

To improve the injection behavior of brushite cement, dense ${\beta}-Ca_3(PO_4)_2$ (${\beta}-TCP$) granules were added to the starting material. The spherical ${\beta}-TCP$ granules prepared by spray-drying and subsequent sintering at $1000{\sim}1200^{\circ}C$ accounted for fractions of from 0.5 to 0.7 of the total ${\beta}-TCP$. The injection behavior was evaluated by measuring the injected mass divided by the loaded mass of paste in the syringe pump. The injected amount was increased with the increase in the fraction and sintering temperature of ${\beta}-TCP$ granules, except at $1200^{\circ}C$. The increase in the fraction of ${\beta}-TCP$ and its sintering temperature resulted in a decrease in the plastic limit, which is the volume of water required to liquefy the compact. The rest water could be utilized in the cement with the reduced plastic limit for improved injectability. The amounts of rest water assigned for powdery phase were estimated, and correlated with the injectability of paste.

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References

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