Novel Method for Loading Microporous Ceramics Bone Grafts by Using a Directional Flow

Journal of Functional Biomaterials

Michael Seidenstuecker²  Steffen Kissling²  Juergen Ruehe¹  Norbert P. Suedkamp²  Hermann O. Mayr²  Anke Bernstein² 

[1] Laboratory for Chemistry and Physics of Interfaces, Department of Microsystems Engineering-IMTEK, University of Freiburg, Georges-Koehler-Allee 103, Freiburg D-79110, Germany; E-Mails:;Center for Surgery, Department of Orthopedics and Trauma Surgery, Medical Center-University of Freiburg, Hugstetter str. 55, Freiburg D-79106, Germany; E-Mails:

关键词: β-tricalcium phosphate;    porous ceramic;    alginate;    hydrogel;    flow-chamber;   

DOI  :  10.3390/jfb6041085

来源: mdpi

【 摘 要 】

The aim of this study was the development of a process for filling the pores of a β-tricalcium phosphate ceramic with interconnected porosity with an alginate hydrogel. For filling of the ceramics, solutions of alginate hydrogel precursors with suitable viscosity were chosen as determined by rheometry. For loading of the porous ceramics with the gel the samples were placed at the flow chamber and sealed with silicone seals. By using a vacuum induced directional flow, the samples were loaded with alginate solutions. The loading success was controlled by ESEM and fluorescence imaging using a fluorescent dye (FITC) for staining of the gel. After loading of the pores, the alginate is transformed into a hydrogel through crosslinking with CaCl₂ solution. The biocompatibility of the obtained composite material was tested with a live dead cell staining by using MG-63 Cells. The loading procedure via vacuum assisted directional flow allowed complete filling of the pores of the ceramics within a few minutes (10 ± 3 min) while loading through simple immersion into the polymer solution or through a conventional vacuum method only gave incomplete filling.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.