Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Effects of Particle Size Distribution of CaHPO4·2H2O on Self-hardening Bone Cement

  • Hwang, In-Soo (Ceramics-building Materials Department, Korea Institute of Ceramic Engineering and Technology (KICET)) ;
  • Cho, Sang-Hwan (Ceramics-building Materials Department, Korea Institute of Ceramic Engineering and Technology (KICET)) ;
  • Lee, Jong-Kyu (Ceramics-building Materials Department, Korea Institute of Ceramic Engineering and Technology (KICET))
  • Published : 2003.08.01
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Abstract

This research examined the effect, which it follows in particle size distribution change of CaHPO$_4$ㆍ2$H_{2}O$ (DCPD). We used two kinds of compositions; tetracalcium phosphate (TTCP)/dicalcium phosphate dihydrate (DCPD) composition and $\alpha$-tricalcium phosphate ($\alpha$-TCP)TTCP/DCPD composition. As the result, the mean particle size of the DCPD decreased, the setting tine shortened at all compositions. The reference powder (DR), which did not milling, showed about 2 times strength value compared with other milling sample. Especially, the compressive strength of 60 : 20 : 20 sample (DR(do$_{0.5}$)=12.08 $\mu\textrm{m}$) after curing 7 days in simulated body fluid solution was 40$\pm$0.5 MPa, which was the highest. This resulted from the packing density at $\alpha$-TCP/TTCP/DCPD combination.

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References

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