Abstract
This study reports on a novel method to improve the strength of apatitic bone cements. The liquid phase of Biocement-H© was modified with commercial superplasticizers. The results showed that small additions, i.e. 0.5vol%, in the aqueous liquid phase improved the maximum compressive strength of Biocement-H© (35MPa) by 71%, i.e. 60MPa. Moreover, the addition of high amounts of superplasticizers, i.e. 50 vol.%, allowed for a significant reduction of the liquid-to-powder ratio from 0.32 to 0.256mL/g, without affecting the maximum strength and/or the workability of the cement. These results open up new ways to develop injectable and high-strength apatitic bone cements for load-bearing applications.
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