REGENERATION OF THE DAMAGED MANDIBULAR BONE IN RAT AFTER THE INJECTION OF AUTOLOGOUS MESENCHYMAL STEM CELLS OF BONE MARROW ORIGIN ADSORBED ON THE FIBRIN CLOT



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Abstract

The processes of the repair of the damaged mandibular bone in rats were studied using light microscopy and x-ray densitometry at various time intervals after the local injection of the plateletrich fibrin clot (PRFC), autologous mesenchymal (stromal) stem cells of bone marrow origin (AMSCBMO) or AMSCBMO, adsorbed on PRFC, into the damaged site. The best results were obtained after the application of PRFC with AMSCBMO. One week after the operation, the mandibular bone defect was largely filled with the newly formed bone tissue. It seems most probable that in this case the effects of fibrin and stem cells on the damaged bone were summarized or even amplified. Bone formation in these cases appeared to begin in the center, but not at the edges, of the defect. AMSCBMO were distributed over the whole volume of PRFC, filling all the defect more or less uniformly. As a result, maximally fast and successful restoration of bone tissue was reached in the area of the defect.

References

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