Download PDF by Roger Narayan, Paolo Colombo, Dileep Singh, Jonathan Salem: Advances in Bioceramics and Porous Ceramics II

By Roger Narayan, Paolo Colombo, Dileep Singh, Jonathan Salem

Enhance your figuring out within the Most worthy features of advances in bioceramics and porous ceramics. This number of logically prepared and punctiliously chosen articles comprise the complaints of the “Porous Ceramics: Novel advancements and functions” and “Next iteration Bioceramics” symposia, that have been hung on January 27-February 1, 2008.

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The degree of increase from day 1 to day 3 was not significantly different between the scaffold-exposed cells and the controls. Cells remain viable on electrospun scaffolds The viability of the osteoblasts exposed to the electrospun scaffolds was determined using the MTS assay. The amount of formazan produced is proportional to number of living cells in culture since the chemical reduction of formazin to a colored product is dependent on viable cells. For our purposes, the number of cells that have attached to the eCA and eCA-nHA scaffolds is directly proportional to the absorbance reading at 570 nm.

In contrast, the osteoblasts seeded on the eCA-nHA composite scaffolds attached themselves to several fibers that formed an interconnecting network. Only a portion of the cells display a spherical shape. 53 pm, Visualization at higher voltages highlight the HA aggregates as rough conglomerates of material (Figure 4a). The aggregates are located at the edge of the cells, and do not seem to penetrate the cell. Lower voltage images (Figure 4b) show the cell interacting with several fibers that form the meshwork.

Therefore, Mg incorporation into the HA structure is of great interest for developing of artificial bone substitutes [17]. p-TCP, also known as P-whitlockite, is a slow degrading, bioresorbable calcium phosphate ceramic. It is reported that p-TCP is stable below 112X: and above this temperature it goes under phase transition to a-TCP leading to an expansion in the crystal lattice. Mg ions stabilize the p-TCP upon heating above 800°C along with the formation of HA and improve the thermal stability of TCP [ 16,181.

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