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Self-ordered Co nanowire arrays with different diameters of 30, 70 and 75 nm were grown into the anodized aluminum oxide templates by variation of deposition current between 5 and 55 mA. Increasing diameter of the nanowires enhances interaction between the nanowires, thereby decreasing the coercivity. However, increasing the deposition current decreases coercivity due to increase in deposition of light hydrogen ions. The microstructure investigations by x-ray diffraction patterns revealed that varying the diameter of deposited nanowires at constant current caused variation of preferential crystalline growth of the polycrystalline nanowires. Comparing first-order reversal curve (FORC) diagrams of the samples with different diameters and deposition currents revealed magnetization contribution of each FORC feature is proportional with a certain crystalline direction. Magnetic moment contribution of the domains with low and high coercivity and along the H = 0 axis is correlated with intensity of Co (100), ( 110), ( 002) and (101), respectively.

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The aim of this study was to evaluate the effect of platelet‐rich fibrin (PRF) placed in delayed replantation of mature extracted teeth. Sixteen intentionally extracted teeth in two mature beagle dogs were selected. In one quadrant of each jaw, the extraction sockets were filled with PRF prior to replantation, and the other quadrant served as control without PRF. All extracted teeth underwent endodontic treatment and dried for 60 min. Thereafter, they were replanted with a flexible splint. After 8 weeks, the animals were euthanised, and the histological sections examined. Less inflammatory root resorption was noted in the PRF group compared to the control (P = 0.031). However, there was no significant difference between the two groups with regard to new bone formation, inflammatory status, connective tissue healing and replacement resorption (P > 0.05). Using PRF in the extracted socket before delayed replantation did not provide any significant benefit other than reduced inflammatory root resorption.