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PLoS By Category | Recent PLoS Articles
Biochemistry - Biotechnology - Physiology - Rheumatology

Biological Properties of Solid Free Form Designed Ceramic Scaffolds with BMP-2: In Vitro and In Vivo Evaluation
Published: Wednesday, March 28, 2012
Author: Ander Abarrategi et al.

by Ander Abarrategi, Carolina Moreno-Vicente, Francisco Javier Martínez-Vázquez, Ana Civantos, Viviana Ramos, José Vicente Sanz-Casado, Ramón Martínez-Corriá, Fidel Hugo Perera, Francisca Mulero, Pedro Miranda, José Luís López-Lacomba

Porous ceramic scaffolds are widely studied in the tissue engineering field due to their potential in medical applications as bone substitutes or as bone-filling materials. Solid free form (SFF) fabrication methods allow fabrication of ceramic scaffolds with fully controlled pore architecture, which opens new perspectives in bone tissue regeneration materials. However, little experimentation has been performed about real biological properties and possible applications of SFF designed 3D ceramic scaffolds. Thus, here the biological properties of a specific SFF scaffold are evaluated first, both in vitro and in vivo, and later scaffolds are also implanted in pig maxillary defect, which is a model for a possible application in maxillofacial surgery. In vitro results show good biocompatibility of the scaffolds, promoting cell ingrowth. In vivo results indicate that material on its own conducts surrounding tissue and allow cell ingrowth, thanks to the designed pore size. Additional osteoinductive properties were obtained with BMP-2, which was loaded on scaffolds, and optimal bone formation was observed in pig implantation model. Collectively, data show that SFF scaffolds have real application possibilities for bone tissue engineering purposes, with the main advantage of being fully customizable 3D structures.
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