Journal of the Korean Crystal Growth and Crystal Technology (한국결정성장학회지)

The Korea Association of Crystal Growth (한국결정성장학회)
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Bioactivity behavior of Si and Mg ion-substituted biphasic calcium phosphate powders

Si 및 Mg 이온이 교환된 biphasic calcium phosphate 분말의 생체활성 거동

  • Kim, Tae-Wan (School of Materials Science Engineering, Pusan National University) ;
  • Kim, Dong-Hyun (School of Materials Science Engineering, Pusan National University) ;
  • Jin, Hyeong-Ho (School of Materials Science Engineering, Pusan National University) ;
  • Lee, Heon-Soo (Division of Electrical and Electronic Engineering, Daegu Technical University) ;
  • Park, Hong-Chae (School of Materials Science Engineering, Pusan National University) ;
  • Yoon, Seog-Young (School of Materials Science Engineering, Pusan National University)
  • Received : 2012.02.27
  • Accepted : 2012.03.30
  • Published : 2012.04.30
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Abstract

The co-precipitation technique has been applied to synthesize biphasic calcium phosphate (BCP). $Ca(NO_3)_2{\cdot}4H_2O$, $(NH_4)_2HPO_4$, TEOS and $Mg(NO_3)_2{\cdot}6H_2O$ as the starting materials was used. After the heat treatment of powder crystalline phases HAp and ${\beta}$-TCP analysis showed a mixed phase. The overall spectra appear to have mainly two modes corresponding to characteristic $PO^{3-}_4$ and $OH^-$ groups. After immersion in Hanks' Balanced Salt Solution (HBSS) for 1 week a precipitation started to be formed with individual small granules on the specimen surface. An MTT assay indicated that ionic substituted BCP powders had no cytotoxic effects on MG-63 cells, and that they have good biocompatibility.

이온이 첨가된 BCP(biphasic calcium phosphate) 분말을 제조하기 위하여 $Ca(NO_3)_2{\cdot}4H_2O$, $(NH_4)_2HPO_4$를 출발 물질로 공침법(co-precipitation process)을 이용하여 합성하였다. Si-BCP 합성을 위하여 TEOS를 Mg-BCP 합성을 위해서는 $Mg(NO_3)_2{\cdot}6H_2O$를 사용하였다. 합성된 분말의 열처리 후 결정상을 분석한 결과 HAp와 ${\beta}$-TCP가 혼재된 상을 관찰할 수 있었다. 분광학적 분석에서도 인산칼슘의 $PO^{3-}_4$와 $OH^-$ 그룹에 해당하는 밴드도 관찰되었다. 이온이 첨가된 BCP 분말의 생체활성 거동을 평가하기 위하여 Hanks' Balanced Salt Solution(HBSS)에 침적시켜 시간에 따라 형상의 변화 및 결정상을 분석한 결과, 두 샘플 모두에서 빠른 표면 활성을 나타내었다. 세포 성장률 평가에서도 대조군에 비하여 세포성장률이 우수함을 관찰하였다.

Keywords

References

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