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J. Korean Ceram. Soc. > Volume 45(10); 2008 > Article
Journal of the Korean Ceramic Society 2008;45(10): 625.
doi: https://doi.org/10.4191/kcers.2008.45.1.625
과립형 β-삼인산칼슘을 사용한 Brushite계 골시멘트의 보관 조건에 따른 경화 특성
이선애, 정태주, 오경식
국립안동대학교 신소재 공학부 청정소재기술연구센터
Effect of Storage Conditions on the Setting Properties of Brushite Bone Cement Containing Granular β-Tricalcium Phosphate
Sun-Ae Lee, Tai-Joo Chung, Kyung-Sik Oh
School of Advanced Materials Engineering, The Center for Green Materials Technology, Andong National University
ABSTRACT
In the bone cement composed of dense granules of $beta-Ca_3(PO_4){_2}(beta-TCP)$ and $Ca(H_2PO_4){_2}H_2O$, the compressive strength, setting time and temperature rise were measured to observe the degradation of cement with respect to the stored days before setting. Decreases of compressive strength and temperature rise were observed, while setting time increased with respect to the stored days. The similar trends were repeated with the increase of temperature of storage. Such a change virtually meant the fading of the character of cement and it took place only when the two starting materials were mixed during storage. The degradation could be mitigated taking advantage of granular $beta$-TCP instead of powdery one. The formation of $CaHPO_4$, which resulted from reaction with ambient humidity, was attributed to the degradation observed during storage. Dependence of the degradation behavior on mixing and temperature during storage was discussed in terms of the driving force for reaction of cement.
Key words: Bone cement, Granular $\beta$-TCP, Storage, DCPD, DCP
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