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Comparative Study
High-strength apatitic cement by modification with superplasticizers.
- E Fernández, S Sarda, M Hamcerencu, M D Vlad, M Gel, S Valls, R Torres, and J López.
- Interdepartmental Research Group for the Applied Scientific Collaboration (IRGASC), Division of Bioengineering & Biomaterials, Technical University of Catalonia (UPC), Avda. Diagonal 647, E-08028-Barcelona, Spain. enrique.fernandez@upc.es
- Biomaterials. 2005 May 1;26(15):2289-96.
AbstractThis 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. 0.5 vol%, in the aqueous liquid phase improved the maximum compressive strength of Biocement-H (35 MPa) by 71%, i.e. 60 MPa. 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 0.256 mL/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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