%0 Journal Article
%T Xenograft Enriched with Autologous Bone Marrow in Inlay Reconstructions: A Tomographic and Histomorphometric Study in Rabbit Calvaria
%A Marcelo de Oliveira e Silva
%A Andr¨¦ Antonio Pelegrine
%A Alexandre Alves Pinheiro da Silva
%A Luiz Roberto Manh£¿es J¨²nior
%A Rafael de Mello e Oliveira
%A Silvana Gaiba Fran£¿a
%A Antonio Carlos Aloise
%A Lydia Masako Ferreira
%J International Journal of Biomaterials
%D 2012
%I Hindawi Publishing Corporation
%R 10.1155/2012/170520
%X Objective. The aim of this study was to evaluate the bone healing after the usage of a scaffold enriched with bone marrow. Study Design. Ten rabbits were divided into 2 groups of 5 animals. Bilateral 12£¿mm diameter defects were created in the parietal bones. In control group Bio-Oss were inserted in both defects and, in experimental group, Bio-Oss enriched with autologous bone marrow were inserted in both defects. In these two groups, one of the calvarial defects was covered with Bio-Gide. The rabbits were sacrified 8 weeks after surgery and both CT and histomorphometric analysis were done. Results. The CT showed a lower remaining defect area in the experimental group covered with Bio-Gide when compared with control group, with and without Bio-Gide. The histomorphometrics showed no difference between groups regarding the non-vital mineralized tissue area. For vital mineralized tissue area, the experimental group covered with Bio-Gide obtained a higher percentage area when compared with control group, with and without Bio-Gide. For non-mineralized tissue area, the experimental group covered with Bio-Gide obtained a lower percentage area when compared with control group, with and without Bio-Gide. Conclusion. Both autologous bone marrow and membrane can contribute to the enhancement of bone healing. 1. Introduction Bone defects are created by different etiological factors, such as tumors, infections, and trauma. They can usually be treated with bone grafting procedures. For these situations, the autogenous bone graft is considered the gold standard [1, 2] because it has osteogenic potential [3]. However, the removal of autologous graft often presents a significant risk of postoperatively complications and morbidity [4]. A large number of bone substitute materials such as homologous, xenogeneic, and synthetic grafts are available, but also have drawbacks related to mechanical and biological properties [5]. Tissue engineering has advanced recently in an attempt to reproduce lost tissues and organs, including bone tissue. Thus, several studies have been directed to the creation of cellular therapies protocols [6¨C8] in order to restore the native tissue without requiring the harvest of large autologous bone grafts. The use of stem cells has been extensively related. Its ability to differentiate into a variety of specialized cells (producing adipose tissue, bone, cartilage, and endothelium) becomes the object of great interest in the tissue engineering field. Many studies have been reported in the literature using mesenchymal cells from bone marrow to maximize
%U http://www.hindawi.com/journals/ijbm/2012/170520/