| 생체활성 유리 골 시멘트의 응결 및 수산화 아파타이트 형성 |
| 임형봉, 김철영 |
| 인하대학교 세라믹공학과 |
| Setting and Hydroxyapatite Formation of Bioactive Glass Bone Cement |
| Hyoung-Bong Lim, Cheol-Young Kim |
| Department of Ceramic Engineering, Inha University |
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| ABSTRACT |
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Hardening and hydroxyapatite(HAp) formation behavior of the bioactive cements in the system of $CaO-SiO_{2}-P_{2}O_{5}$ glasses and the corresponding glass-ceramics were studied. DCPD (Dicalcium Phosphate Dihydrate: $CaHPO_4{cdot}2H_2O$) and DCPA (Dicalcium Phosphate Anhydrous: $CaHPO_4$) were developed when the prepared glass and glass-ceramic powders were mixed with three different solutions. The DCPD and DCPA transformed to HAp when the cement was soaked in Simulated Body Fluid (SBF), and this HAp formation strongly depended on the releasing capacity of $Ca^{2+}$ ions from the cements. The glass-ceramic containing apatite showed fast setting, but no HAp formation was observed because no $Ca^{2+}$ ions were released from this glass-ceramics. The compressive strength of the cements increased with reaction time in SBF until all DCPD and DCPA transformed to HAp. |
| Key words:
Bioactive glass, Glass-ceramics, Bone cement, Hardening, Hydroxyapatite |
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